kamp/IOPaint
1
0
Fork 0
Code Issues Pull Requests Releases 1 Activity

Add FcF

Browse Source
This commit is contained in:
Qing 2022-09-02 10:37:30 +08:00
parent b6d71c4733
commit 38c8837af7
6 changed files with 1831 additions and 636 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lama_cleaner/model/base.py
View File

@ -4,6 +4,7 @@ from typing import Optional
import cv2
import torch
from loguru import logger
import numpy as np
from lama_cleaner.helper import boxes_from_mask, resize_max_size, pad_img_to_modulo
from lama_cleaner.schema import Config, HDStrategy
@ -51,7 +52,7 @@ class InpaintModel:
result = self.forward(pad_image, pad_mask, config)
result = result[0:origin_height, 0:origin_width, :]
original_pixel_indices = mask != 255
original_pixel_indices = mask < 127
result[original_pixel_indices] = image[:, :, ::-1][original_pixel_indices]
return result

1180
lama_cleaner/model/fcf.py Normal file
View File

File diff suppressed because it is too large Load Diff

628
lama_cleaner/model/mat.py
View File

@ -1,615 +1,20 @@
import collections
import os
from itertools import repeat
from typing import Any
import random
import cv2
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.utils.checkpoint as checkpoint
from lama_cleaner.helper import load_model, get_cache_path_by_url, norm_img
from lama_cleaner.model.base import InpaintModel
from torch.nn.functional import conv2d, conv_transpose2d
import torch.utils.checkpoint as checkpoint
import numpy as np
from lama_cleaner.model.utils import setup_filter, Conv2dLayer, FullyConnectedLayer, conv2d_resample, bias_act, \
upsample2d, activation_funcs, MinibatchStdLayer, to_2tuple, normalize_2nd_moment
from lama_cleaner.schema import Config
class EasyDict(dict):
"""Convenience class that behaves like a dict but allows access with the attribute syntax."""
def __getattr__(self, name: str) -> Any:
try:
return self[name]
except KeyError:
raise AttributeError(name)
def __setattr__(self, name: str, value: Any) -> None:
self[name] = value
def __delattr__(self, name: str) -> None:
del self[name]
activation_funcs = {
'linear': EasyDict(func=lambda x, **_: x, def_alpha=0, def_gain=1, cuda_idx=1, ref='', has_2nd_grad=False),
'relu': EasyDict(func=lambda x, **_: torch.nn.functional.relu(x), def_alpha=0, def_gain=np.sqrt(2), cuda_idx=2,
ref='y', has_2nd_grad=False),
'lrelu': EasyDict(func=lambda x, alpha, **_: torch.nn.functional.leaky_relu(x, alpha), def_alpha=0.2,
def_gain=np.sqrt(2), cuda_idx=3, ref='y', has_2nd_grad=False),
'tanh': EasyDict(func=lambda x, **_: torch.tanh(x), def_alpha=0, def_gain=1, cuda_idx=4, ref='y',
has_2nd_grad=True),
'sigmoid': EasyDict(func=lambda x, **_: torch.sigmoid(x), def_alpha=0, def_gain=1, cuda_idx=5, ref='y',
has_2nd_grad=True),
'elu': EasyDict(func=lambda x, **_: torch.nn.functional.elu(x), def_alpha=0, def_gain=1, cuda_idx=6, ref='y',
has_2nd_grad=True),
'selu': EasyDict(func=lambda x, **_: torch.nn.functional.selu(x), def_alpha=0, def_gain=1, cuda_idx=7, ref='y',
has_2nd_grad=True),
'softplus': EasyDict(func=lambda x, **_: torch.nn.functional.softplus(x), def_alpha=0, def_gain=1, cuda_idx=8,
ref='y', has_2nd_grad=True),
'swish': EasyDict(func=lambda x, **_: torch.sigmoid(x) * x, def_alpha=0, def_gain=np.sqrt(2), cuda_idx=9, ref='x',
has_2nd_grad=True),
}
def _ntuple(n):
def parse(x):
if isinstance(x, collections.abc.Iterable):
return x
return tuple(repeat(x, n))
return parse
to_2tuple = _ntuple(2)
def _bias_act_ref(x, b=None, dim=1, act='linear', alpha=None, gain=None, clamp=None):
"""Slow reference implementation of `bias_act()` using standard TensorFlow ops.
"""
assert isinstance(x, torch.Tensor)
assert clamp is None or clamp >= 0
spec = activation_funcs[act]
alpha = float(alpha if alpha is not None else spec.def_alpha)
gain = float(gain if gain is not None else spec.def_gain)
clamp = float(clamp if clamp is not None else -1)
# Add bias.
if b is not None:
assert isinstance(b, torch.Tensor) and b.ndim == 1
assert 0 <= dim < x.ndim
assert b.shape[0] == x.shape[dim]
x = x + b.reshape([-1 if i == dim else 1 for i in range(x.ndim)])
# Evaluate activation function.
alpha = float(alpha)
x = spec.func(x, alpha=alpha)
# Scale by gain.
gain = float(gain)
if gain != 1:
x = x * gain
# Clamp.
if clamp >= 0:
x = x.clamp(-clamp, clamp) # pylint: disable=invalid-unary-operand-type
return x
def bias_act(x, b=None, dim=1, act='linear', alpha=None, gain=None, clamp=None, impl='ref'):
r"""Fused bias and activation function.
Adds bias `b` to activation tensor `x`, evaluates activation function `act`,
and scales the result by `gain`. Each of the steps is optional. In most cases,
the fused op is considerably more efficient than performing the same calculation
using standard PyTorch ops. It supports first and second order gradients,
but not third order gradients.
Args:
x: Input activation tensor. Can be of any shape.
b: Bias vector, or `None` to disable. Must be a 1D tensor of the same type
as `x`. The shape must be known, and it must match the dimension of `x`
corresponding to `dim`.
dim: The dimension in `x` corresponding to the elements of `b`.
The value of `dim` is ignored if `b` is not specified.
act: Name of the activation function to evaluate, or `"linear"` to disable.
Can be e.g. `"relu"`, `"lrelu"`, `"tanh"`, `"sigmoid"`, `"swish"`, etc.
See `activation_funcs` for a full list. `None` is not allowed.
alpha: Shape parameter for the activation function, or `None` to use the default.
gain: Scaling factor for the output tensor, or `None` to use default.
See `activation_funcs` for the default scaling of each activation function.
If unsure, consider specifying 1.
clamp: Clamp the output values to `[-clamp, +clamp]`, or `None` to disable
the clamping (default).
impl: Name of the implementation to use. Can be `"ref"` or `"cuda"` (default).
Returns:
Tensor of the same shape and datatype as `x`.
"""
assert isinstance(x, torch.Tensor)
assert impl in ['ref', 'cuda']
return _bias_act_ref(x=x, b=b, dim=dim, act=act, alpha=alpha, gain=gain, clamp=clamp)
def _get_filter_size(f):
if f is None:
return 1, 1
assert isinstance(f, torch.Tensor) and f.ndim in [1, 2]
fw = f.shape[-1]
fh = f.shape[0]
fw = int(fw)
fh = int(fh)
assert fw >= 1 and fh >= 1
return fw, fh
def _get_weight_shape(w):
shape = [int(sz) for sz in w.shape]
return shape
def _parse_scaling(scaling):
if isinstance(scaling, int):
scaling = [scaling, scaling]
assert isinstance(scaling, (list, tuple))
assert all(isinstance(x, int) for x in scaling)
sx, sy = scaling
assert sx >= 1 and sy >= 1
return sx, sy
def _parse_padding(padding):
if isinstance(padding, int):
padding = [padding, padding]
assert isinstance(padding, (list, tuple))
assert all(isinstance(x, int) for x in padding)
if len(padding) == 2:
padx, pady = padding
padding = [padx, padx, pady, pady]
padx0, padx1, pady0, pady1 = padding
return padx0, padx1, pady0, pady1
def setup_filter(f, device=torch.device('cpu'), normalize=True, flip_filter=False, gain=1, separable=None):
r"""Convenience function to setup 2D FIR filter for `upfirdn2d()`.
Args:
f: Torch tensor, numpy array, or python list of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable),
`[]` (impulse), or
`None` (identity).
device: Result device (default: cpu).
normalize: Normalize the filter so that it retains the magnitude
for constant input signal (DC)? (default: True).
flip_filter: Flip the filter? (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
separable: Return a separable filter? (default: select automatically).
Returns:
Float32 tensor of the shape
`[filter_height, filter_width]` (non-separable) or
`[filter_taps]` (separable).
"""
# Validate.
if f is None:
f = 1
f = torch.as_tensor(f, dtype=torch.float32)
assert f.ndim in [0, 1, 2]
assert f.numel() > 0
if f.ndim == 0:
f = f[np.newaxis]
# Separable?
if separable is None:
separable = (f.ndim == 1 and f.numel() >= 8)
if f.ndim == 1 and not separable:
f = f.ger(f)
assert f.ndim == (1 if separable else 2)
# Apply normalize, flip, gain, and device.
if normalize:
f /= f.sum()
if flip_filter:
f = f.flip(list(range(f.ndim)))
f = f * (gain ** (f.ndim / 2))
f = f.to(device=device)
return f
def upfirdn2d(x, f, up=1, down=1, padding=0, flip_filter=False, gain=1, impl='cuda'):
r"""Pad, upsample, filter, and downsample a batch of 2D images.
Performs the following sequence of operations for each channel:
1. Upsample the image by inserting N-1 zeros after each pixel (`up`).
2. Pad the image with the specified number of zeros on each side (`padding`).
Negative padding corresponds to cropping the image.
3. Convolve the image with the specified 2D FIR filter (`f`), shrinking it
so that the footprint of all output pixels lies within the input image.
4. Downsample the image by keeping every Nth pixel (`down`).
This sequence of operations bears close resemblance to scipy.signal.upfirdn().
The fused op is considerably more efficient than performing the same calculation
using standard PyTorch ops. It supports gradients of arbitrary order.
Args:
x: Float32/float64/float16 input tensor of the shape
`[batch_size, num_channels, in_height, in_width]`.
f: Float32 FIR filter of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable), or
`None` (identity).
up: Integer upsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
down: Integer downsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
padding: Padding with respect to the upsampled image. Can be a single number
or a list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
flip_filter: False = convolution, True = correlation (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
impl: Implementation to use. Can be `'ref'` or `'cuda'` (default: `'cuda'`).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
# assert isinstance(x, torch.Tensor)
# assert impl in ['ref', 'cuda']
return _upfirdn2d_ref(x, f, up=up, down=down, padding=padding, flip_filter=flip_filter, gain=gain)
def _upfirdn2d_ref(x, f, up=1, down=1, padding=0, flip_filter=False, gain=1):
"""Slow reference implementation of `upfirdn2d()` using standard PyTorch ops.
"""
# Validate arguments.
assert isinstance(x, torch.Tensor) and x.ndim == 4
if f is None:
f = torch.ones([1, 1], dtype=torch.float32, device=x.device)
assert isinstance(f, torch.Tensor) and f.ndim in [1, 2]
assert f.dtype == torch.float32 and not f.requires_grad
batch_size, num_channels, in_height, in_width = x.shape
# upx, upy = _parse_scaling(up)
# downx, downy = _parse_scaling(down)
upx, upy = up, up
downx, downy = down, down
# padx0, padx1, pady0, pady1 = _parse_padding(padding)
padx0, padx1, pady0, pady1 = padding[0], padding[1], padding[2], padding[3]
# Upsample by inserting zeros.
x = x.reshape([batch_size, num_channels, in_height, 1, in_width, 1])
x = torch.nn.functional.pad(x, [0, upx - 1, 0, 0, 0, upy - 1])
x = x.reshape([batch_size, num_channels, in_height * upy, in_width * upx])
# Pad or crop.
x = torch.nn.functional.pad(x, [max(padx0, 0), max(padx1, 0), max(pady0, 0), max(pady1, 0)])
x = x[:, :, max(-pady0, 0): x.shape[2] - max(-pady1, 0), max(-padx0, 0): x.shape[3] - max(-padx1, 0)]
# Setup filter.
f = f * (gain ** (f.ndim / 2))
f = f.to(x.dtype)
if not flip_filter:
f = f.flip(list(range(f.ndim)))
# Convolve with the filter.
f = f[np.newaxis, np.newaxis].repeat([num_channels, 1] + [1] * f.ndim)
if f.ndim == 4:
x = conv2d(input=x, weight=f, groups=num_channels)
else:
x = conv2d(input=x, weight=f.unsqueeze(2), groups=num_channels)
x = conv2d(input=x, weight=f.unsqueeze(3), groups=num_channels)
# Downsample by throwing away pixels.
x = x[:, :, ::downy, ::downx]
return x
def upsample2d(x, f, up=2, padding=0, flip_filter=False, gain=1, impl='cuda'):
r"""Upsample a batch of 2D images using the given 2D FIR filter.
By default, the result is padded so that its shape is a multiple of the input.
User-specified padding is applied on top of that, with negative values
indicating cropping. Pixels outside the image are assumed to be zero.
Args:
x: Float32/float64/float16 input tensor of the shape
`[batch_size, num_channels, in_height, in_width]`.
f: Float32 FIR filter of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable), or
`None` (identity).
up: Integer upsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
padding: Padding with respect to the output. Can be a single number or a
list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
flip_filter: False = convolution, True = correlation (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
impl: Implementation to use. Can be `'ref'` or `'cuda'` (default: `'cuda'`).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
upx, upy = _parse_scaling(up)
# upx, upy = up, up
padx0, padx1, pady0, pady1 = _parse_padding(padding)
# padx0, padx1, pady0, pady1 = padding, padding, padding, padding
fw, fh = _get_filter_size(f)
p = [
padx0 + (fw + upx - 1) // 2,
padx1 + (fw - upx) // 2,
pady0 + (fh + upy - 1) // 2,
pady1 + (fh - upy) // 2,
]
return upfirdn2d(x, f, up=up, padding=p, flip_filter=flip_filter, gain=gain * upx * upy, impl=impl)
def downsample2d(x, f, down=2, padding=0, flip_filter=False, gain=1, impl='cuda'):
r"""Downsample a batch of 2D images using the given 2D FIR filter.
By default, the result is padded so that its shape is a fraction of the input.
User-specified padding is applied on top of that, with negative values
indicating cropping. Pixels outside the image are assumed to be zero.
Args:
x: Float32/float64/float16 input tensor of the shape
`[batch_size, num_channels, in_height, in_width]`.
f: Float32 FIR filter of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable), or
`None` (identity).
down: Integer downsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
padding: Padding with respect to the input. Can be a single number or a
list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
flip_filter: False = convolution, True = correlation (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
impl: Implementation to use. Can be `'ref'` or `'cuda'` (default: `'cuda'`).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
downx, downy = _parse_scaling(down)
# padx0, padx1, pady0, pady1 = _parse_padding(padding)
padx0, padx1, pady0, pady1 = padding, padding, padding, padding
fw, fh = _get_filter_size(f)
p = [
padx0 + (fw - downx + 1) // 2,
padx1 + (fw - downx) // 2,
pady0 + (fh - downy + 1) // 2,
pady1 + (fh - downy) // 2,
]
return upfirdn2d(x, f, down=down, padding=p, flip_filter=flip_filter, gain=gain, impl=impl)
def _conv2d_wrapper(x, w, stride=1, padding=0, groups=1, transpose=False, flip_weight=True):
"""Wrapper for the underlying `conv2d()` and `conv_transpose2d()` implementations.
"""
out_channels, in_channels_per_group, kh, kw = _get_weight_shape(w)
# Flip weight if requested.
if not flip_weight: # conv2d() actually performs correlation (flip_weight=True) not convolution (flip_weight=False).
w = w.flip([2, 3])
# Workaround performance pitfall in cuDNN 8.0.5, triggered when using
# 1x1 kernel + memory_format=channels_last + less than 64 channels.
if kw == 1 and kh == 1 and stride == 1 and padding in [0, [0, 0], (0, 0)] and not transpose:
if x.stride()[1] == 1 and min(out_channels, in_channels_per_group) < 64:
if out_channels <= 4 and groups == 1:
in_shape = x.shape
x = w.squeeze(3).squeeze(2) @ x.reshape([in_shape[0], in_channels_per_group, -1])
x = x.reshape([in_shape[0], out_channels, in_shape[2], in_shape[3]])
else:
x = x.to(memory_format=torch.contiguous_format)
w = w.to(memory_format=torch.contiguous_format)
x = conv2d(x, w, groups=groups)
return x.to(memory_format=torch.channels_last)
# Otherwise => execute using conv2d_gradfix.
op = conv_transpose2d if transpose else conv2d
return op(x, w, stride=stride, padding=padding, groups=groups)
def conv2d_resample(x, w, f=None, up=1, down=1, padding=0, groups=1, flip_weight=True, flip_filter=False):
r"""2D convolution with optional up/downsampling.
Padding is performed only once at the beginning, not between the operations.
Args:
x: Input tensor of shape
`[batch_size, in_channels, in_height, in_width]`.
w: Weight tensor of shape
`[out_channels, in_channels//groups, kernel_height, kernel_width]`.
f: Low-pass filter for up/downsampling. Must be prepared beforehand by
calling setup_filter(). None = identity (default).
up: Integer upsampling factor (default: 1).
down: Integer downsampling factor (default: 1).
padding: Padding with respect to the upsampled image. Can be a single number
or a list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
groups: Split input channels into N groups (default: 1).
flip_weight: False = convolution, True = correlation (default: True).
flip_filter: False = convolution, True = correlation (default: False).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
# Validate arguments.
assert isinstance(x, torch.Tensor) and (x.ndim == 4)
assert isinstance(w, torch.Tensor) and (w.ndim == 4) and (w.dtype == x.dtype)
assert f is None or (isinstance(f, torch.Tensor) and f.ndim in [1, 2] and f.dtype == torch.float32)
assert isinstance(up, int) and (up >= 1)
assert isinstance(down, int) and (down >= 1)
# assert isinstance(groups, int) and (groups >= 1), f"!!!!!! groups: {groups} isinstance(groups, int) {isinstance(groups, int)} {type(groups)}"
out_channels, in_channels_per_group, kh, kw = _get_weight_shape(w)
fw, fh = _get_filter_size(f)
# px0, px1, py0, py1 = _parse_padding(padding)
px0, px1, py0, py1 = padding, padding, padding, padding
# Adjust padding to account for up/downsampling.
if up > 1:
px0 += (fw + up - 1) // 2
px1 += (fw - up) // 2
py0 += (fh + up - 1) // 2
py1 += (fh - up) // 2
if down > 1:
px0 += (fw - down + 1) // 2
px1 += (fw - down) // 2
py0 += (fh - down + 1) // 2
py1 += (fh - down) // 2
# Fast path: 1x1 convolution with downsampling only => downsample first, then convolve.
if kw == 1 and kh == 1 and (down > 1 and up == 1):
x = upfirdn2d(x=x, f=f, down=down, padding=[px0, px1, py0, py1], flip_filter=flip_filter)
x = _conv2d_wrapper(x=x, w=w, groups=groups, flip_weight=flip_weight)
return x
# Fast path: 1x1 convolution with upsampling only => convolve first, then upsample.
if kw == 1 and kh == 1 and (up > 1 and down == 1):
x = _conv2d_wrapper(x=x, w=w, groups=groups, flip_weight=flip_weight)
x = upfirdn2d(x=x, f=f, up=up, padding=[px0, px1, py0, py1], gain=up ** 2, flip_filter=flip_filter)
return x
# Fast path: downsampling only => use strided convolution.
if down > 1 and up == 1:
x = upfirdn2d(x=x, f=f, padding=[px0, px1, py0, py1], flip_filter=flip_filter)
x = _conv2d_wrapper(x=x, w=w, stride=down, groups=groups, flip_weight=flip_weight)
return x
# Fast path: upsampling with optional downsampling => use transpose strided convolution.
if up > 1:
if groups == 1:
w = w.transpose(0, 1)
else:
w = w.reshape(groups, out_channels // groups, in_channels_per_group, kh, kw)
w = w.transpose(1, 2)
w = w.reshape(groups * in_channels_per_group, out_channels // groups, kh, kw)
px0 -= kw - 1
px1 -= kw - up
py0 -= kh - 1
py1 -= kh - up
pxt = max(min(-px0, -px1), 0)
pyt = max(min(-py0, -py1), 0)
x = _conv2d_wrapper(x=x, w=w, stride=up, padding=[pyt, pxt], groups=groups, transpose=True,
flip_weight=(not flip_weight))
x = upfirdn2d(x=x, f=f, padding=[px0 + pxt, px1 + pxt, py0 + pyt, py1 + pyt], gain=up ** 2,
flip_filter=flip_filter)
if down > 1:
x = upfirdn2d(x=x, f=f, down=down, flip_filter=flip_filter)
return x
# Fast path: no up/downsampling, padding supported by the underlying implementation => use plain conv2d.
if up == 1 and down == 1:
if px0 == px1 and py0 == py1 and px0 >= 0 and py0 >= 0:
return _conv2d_wrapper(x=x, w=w, padding=[py0, px0], groups=groups, flip_weight=flip_weight)
# Fallback: Generic reference implementation.
x = upfirdn2d(x=x, f=(f if up > 1 else None), up=up, padding=[px0, px1, py0, py1], gain=up ** 2,
flip_filter=flip_filter)
x = _conv2d_wrapper(x=x, w=w, groups=groups, flip_weight=flip_weight)
if down > 1:
x = upfirdn2d(x=x, f=f, down=down, flip_filter=flip_filter)
return x
# ----------------------------------------------------------------------------
def normalize_2nd_moment(x, dim=1, eps=1e-8):
return x * (x.square().mean(dim=dim, keepdim=True) + eps).rsqrt()
class FullyConnectedLayer(nn.Module):
def __init__(self,
in_features, # Number of input features.
out_features, # Number of output features.
bias=True, # Apply additive bias before the activation function?
activation='linear', # Activation function: 'relu', 'lrelu', etc.
lr_multiplier=1, # Learning rate multiplier.
bias_init=0, # Initial value for the additive bias.
):
super().__init__()
self.weight = torch.nn.Parameter(torch.randn([out_features, in_features]) / lr_multiplier)
self.bias = torch.nn.Parameter(torch.full([out_features], np.float32(bias_init))) if bias else None
self.activation = activation
self.weight_gain = lr_multiplier / np.sqrt(in_features)
self.bias_gain = lr_multiplier
def forward(self, x):
w = self.weight * self.weight_gain
b = self.bias
if b is not None and self.bias_gain != 1:
b = b * self.bias_gain
if self.activation == 'linear' and b is not None:
# out = torch.addmm(b.unsqueeze(0), x, w.t())
x = x.matmul(w.t())
out = x + b.reshape([-1 if i == x.ndim - 1 else 1 for i in range(x.ndim)])
else:
x = x.matmul(w.t())
out = bias_act(x, b, act=self.activation, dim=x.ndim - 1)
return out
class Conv2dLayer(nn.Module):
def __init__(self,
in_channels, # Number of input channels.
out_channels, # Number of output channels.
kernel_size, # Width and height of the convolution kernel.
bias=True, # Apply additive bias before the activation function?
activation='linear', # Activation function: 'relu', 'lrelu', etc.
up=1, # Integer upsampling factor.
down=1, # Integer downsampling factor.
resample_filter=[1, 3, 3, 1], # Low-pass filter to apply when resampling activations.
conv_clamp=None, # Clamp the output to +-X, None = disable clamping.
trainable=True, # Update the weights of this layer during training?
):
super().__init__()
self.activation = activation
self.up = up
self.down = down
self.register_buffer('resample_filter', setup_filter(resample_filter))
self.conv_clamp = conv_clamp
self.padding = kernel_size // 2
self.weight_gain = 1 / np.sqrt(in_channels * (kernel_size ** 2))
self.act_gain = activation_funcs[activation].def_gain
weight = torch.randn([out_channels, in_channels, kernel_size, kernel_size])
bias = torch.zeros([out_channels]) if bias else None
if trainable:
self.weight = torch.nn.Parameter(weight)
self.bias = torch.nn.Parameter(bias) if bias is not None else None
else:
self.register_buffer('weight', weight)
if bias is not None:
self.register_buffer('bias', bias)
else:
self.bias = None
def forward(self, x, gain=1):
w = self.weight * self.weight_gain
x = conv2d_resample(x=x, w=w, f=self.resample_filter, up=self.up, down=self.down,
padding=self.padding)
act_gain = self.act_gain * gain
act_clamp = self.conv_clamp * gain if self.conv_clamp is not None else None
out = bias_act(x, self.bias, act=self.activation, gain=act_gain, clamp=act_clamp)
return out
class ModulatedConv2d(nn.Module):
def __init__(self,
in_channels, # Number of input channels.
@ -983,31 +388,6 @@ class DisBlock(nn.Module):
return out
class MinibatchStdLayer(torch.nn.Module):
def __init__(self, group_size, num_channels=1):
super().__init__()
self.group_size = group_size
self.num_channels = num_channels
def forward(self, x):
N, C, H, W = x.shape
G = torch.min(torch.as_tensor(self.group_size),
torch.as_tensor(N)) if self.group_size is not None else N
F = self.num_channels
c = C // F
y = x.reshape(G, -1, F, c, H,
W) # [GnFcHW] Split minibatch N into n groups of size G, and channels C into F groups of size c.
y = y - y.mean(dim=0) # [GnFcHW] Subtract mean over group.
y = y.square().mean(dim=0) # [nFcHW] Calc variance over group.
y = (y + 1e-8).sqrt() # [nFcHW] Calc stddev over group.
y = y.mean(dim=[2, 3, 4]) # [nF] Take average over channels and pixels.
y = y.reshape(-1, F, 1, 1) # [nF11] Add missing dimensions.
y = y.repeat(G, 1, H, W) # [NFHW] Replicate over group and pixels.
x = torch.cat([x, y], dim=1) # [NCHW] Append to input as new channels.
return x
class Discriminator(torch.nn.Module):
def __init__(self,
c_dim, # Conditioning label (C) dimensionality.

623
lama_cleaner/model/utils.py
View File

@ -1,7 +1,12 @@
import math
from typing import Any
import torch
import numpy as np
import collections
from itertools import repeat
from torch import conv2d, conv_transpose2d
def make_beta_schedule(device, schedule, n_timestep, linear_start=1e-4, linear_end=2e-2, cosine_s=8e-3):
@ -84,3 +89,621 @@ def timestep_embedding(device, timesteps, dim, max_period=10000, repeat_only=Fal
if dim % 2:
embedding = torch.cat([embedding, torch.zeros_like(embedding[:, :1])], dim=-1)
return embedding
###### MAT and FcF #######
def normalize_2nd_moment(x, dim=1, eps=1e-8):
return x * (x.square().mean(dim=dim, keepdim=True) + eps).rsqrt()
class EasyDict(dict):
"""Convenience class that behaves like a dict but allows access with the attribute syntax."""
def __getattr__(self, name: str) -> Any:
try:
return self[name]
except KeyError:
raise AttributeError(name)
def __setattr__(self, name: str, value: Any) -> None:
self[name] = value
def __delattr__(self, name: str) -> None:
del self[name]
def _bias_act_ref(x, b=None, dim=1, act='linear', alpha=None, gain=None, clamp=None):
"""Slow reference implementation of `bias_act()` using standard TensorFlow ops.
"""
assert isinstance(x, torch.Tensor)
assert clamp is None or clamp >= 0
spec = activation_funcs[act]
alpha = float(alpha if alpha is not None else spec.def_alpha)
gain = float(gain if gain is not None else spec.def_gain)
clamp = float(clamp if clamp is not None else -1)
# Add bias.
if b is not None:
assert isinstance(b, torch.Tensor) and b.ndim == 1
assert 0 <= dim < x.ndim
assert b.shape[0] == x.shape[dim]
x = x + b.reshape([-1 if i == dim else 1 for i in range(x.ndim)])
# Evaluate activation function.
alpha = float(alpha)
x = spec.func(x, alpha=alpha)
# Scale by gain.
gain = float(gain)
if gain != 1:
x = x * gain
# Clamp.
if clamp >= 0:
x = x.clamp(-clamp, clamp) # pylint: disable=invalid-unary-operand-type
return x
def bias_act(x, b=None, dim=1, act='linear', alpha=None, gain=None, clamp=None, impl='ref'):
r"""Fused bias and activation function.
Adds bias `b` to activation tensor `x`, evaluates activation function `act`,
and scales the result by `gain`. Each of the steps is optional. In most cases,
the fused op is considerably more efficient than performing the same calculation
using standard PyTorch ops. It supports first and second order gradients,
but not third order gradients.
Args:
x: Input activation tensor. Can be of any shape.
b: Bias vector, or `None` to disable. Must be a 1D tensor of the same type
as `x`. The shape must be known, and it must match the dimension of `x`
corresponding to `dim`.
dim: The dimension in `x` corresponding to the elements of `b`.
The value of `dim` is ignored if `b` is not specified.
act: Name of the activation function to evaluate, or `"linear"` to disable.
Can be e.g. `"relu"`, `"lrelu"`, `"tanh"`, `"sigmoid"`, `"swish"`, etc.
See `activation_funcs` for a full list. `None` is not allowed.
alpha: Shape parameter for the activation function, or `None` to use the default.
gain: Scaling factor for the output tensor, or `None` to use default.
See `activation_funcs` for the default scaling of each activation function.
If unsure, consider specifying 1.
clamp: Clamp the output values to `[-clamp, +clamp]`, or `None` to disable
the clamping (default).
impl: Name of the implementation to use. Can be `"ref"` or `"cuda"` (default).
Returns:
Tensor of the same shape and datatype as `x`.
"""
assert isinstance(x, torch.Tensor)
assert impl in ['ref', 'cuda']
return _bias_act_ref(x=x, b=b, dim=dim, act=act, alpha=alpha, gain=gain, clamp=clamp)
def _get_filter_size(f):
if f is None:
return 1, 1
assert isinstance(f, torch.Tensor) and f.ndim in [1, 2]
fw = f.shape[-1]
fh = f.shape[0]
fw = int(fw)
fh = int(fh)
assert fw >= 1 and fh >= 1
return fw, fh
def _get_weight_shape(w):
shape = [int(sz) for sz in w.shape]
return shape
def _parse_scaling(scaling):
if isinstance(scaling, int):
scaling = [scaling, scaling]
assert isinstance(scaling, (list, tuple))
assert all(isinstance(x, int) for x in scaling)
sx, sy = scaling
assert sx >= 1 and sy >= 1
return sx, sy
def _parse_padding(padding):
if isinstance(padding, int):
padding = [padding, padding]
assert isinstance(padding, (list, tuple))
assert all(isinstance(x, int) for x in padding)
if len(padding) == 2:
padx, pady = padding
padding = [padx, padx, pady, pady]
padx0, padx1, pady0, pady1 = padding
return padx0, padx1, pady0, pady1
def setup_filter(f, device=torch.device('cpu'), normalize=True, flip_filter=False, gain=1, separable=None):
r"""Convenience function to setup 2D FIR filter for `upfirdn2d()`.
Args:
f: Torch tensor, numpy array, or python list of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable),
`[]` (impulse), or
`None` (identity).
device: Result device (default: cpu).
normalize: Normalize the filter so that it retains the magnitude
for constant input signal (DC)? (default: True).
flip_filter: Flip the filter? (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
separable: Return a separable filter? (default: select automatically).
Returns:
Float32 tensor of the shape
`[filter_height, filter_width]` (non-separable) or
`[filter_taps]` (separable).
"""
# Validate.
if f is None:
f = 1
f = torch.as_tensor(f, dtype=torch.float32)
assert f.ndim in [0, 1, 2]
assert f.numel() > 0
if f.ndim == 0:
f = f[np.newaxis]
# Separable?
if separable is None:
separable = (f.ndim == 1 and f.numel() >= 8)
if f.ndim == 1 and not separable:
f = f.ger(f)
assert f.ndim == (1 if separable else 2)
# Apply normalize, flip, gain, and device.
if normalize:
f /= f.sum()
if flip_filter:
f = f.flip(list(range(f.ndim)))
f = f * (gain ** (f.ndim / 2))
f = f.to(device=device)
return f
def _ntuple(n):
def parse(x):
if isinstance(x, collections.abc.Iterable):
return x
return tuple(repeat(x, n))
return parse
to_2tuple = _ntuple(2)
activation_funcs = {
'linear': EasyDict(func=lambda x, **_: x, def_alpha=0, def_gain=1, cuda_idx=1, ref='', has_2nd_grad=False),
'relu': EasyDict(func=lambda x, **_: torch.nn.functional.relu(x), def_alpha=0, def_gain=np.sqrt(2), cuda_idx=2,
ref='y', has_2nd_grad=False),
'lrelu': EasyDict(func=lambda x, alpha, **_: torch.nn.functional.leaky_relu(x, alpha), def_alpha=0.2,
def_gain=np.sqrt(2), cuda_idx=3, ref='y', has_2nd_grad=False),
'tanh': EasyDict(func=lambda x, **_: torch.tanh(x), def_alpha=0, def_gain=1, cuda_idx=4, ref='y',
has_2nd_grad=True),
'sigmoid': EasyDict(func=lambda x, **_: torch.sigmoid(x), def_alpha=0, def_gain=1, cuda_idx=5, ref='y',
has_2nd_grad=True),
'elu': EasyDict(func=lambda x, **_: torch.nn.functional.elu(x), def_alpha=0, def_gain=1, cuda_idx=6, ref='y',
has_2nd_grad=True),
'selu': EasyDict(func=lambda x, **_: torch.nn.functional.selu(x), def_alpha=0, def_gain=1, cuda_idx=7, ref='y',
has_2nd_grad=True),
'softplus': EasyDict(func=lambda x, **_: torch.nn.functional.softplus(x), def_alpha=0, def_gain=1, cuda_idx=8,
ref='y', has_2nd_grad=True),
'swish': EasyDict(func=lambda x, **_: torch.sigmoid(x) * x, def_alpha=0, def_gain=np.sqrt(2), cuda_idx=9, ref='x',
has_2nd_grad=True),
}
def upfirdn2d(x, f, up=1, down=1, padding=0, flip_filter=False, gain=1, impl='cuda'):
r"""Pad, upsample, filter, and downsample a batch of 2D images.
Performs the following sequence of operations for each channel:
1. Upsample the image by inserting N-1 zeros after each pixel (`up`).
2. Pad the image with the specified number of zeros on each side (`padding`).
Negative padding corresponds to cropping the image.
3. Convolve the image with the specified 2D FIR filter (`f`), shrinking it
so that the footprint of all output pixels lies within the input image.
4. Downsample the image by keeping every Nth pixel (`down`).
This sequence of operations bears close resemblance to scipy.signal.upfirdn().
The fused op is considerably more efficient than performing the same calculation
using standard PyTorch ops. It supports gradients of arbitrary order.
Args:
x: Float32/float64/float16 input tensor of the shape
`[batch_size, num_channels, in_height, in_width]`.
f: Float32 FIR filter of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable), or
`None` (identity).
up: Integer upsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
down: Integer downsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
padding: Padding with respect to the upsampled image. Can be a single number
or a list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
flip_filter: False = convolution, True = correlation (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
impl: Implementation to use. Can be `'ref'` or `'cuda'` (default: `'cuda'`).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
# assert isinstance(x, torch.Tensor)
# assert impl in ['ref', 'cuda']
return _upfirdn2d_ref(x, f, up=up, down=down, padding=padding, flip_filter=flip_filter, gain=gain)
def _upfirdn2d_ref(x, f, up=1, down=1, padding=0, flip_filter=False, gain=1):
"""Slow reference implementation of `upfirdn2d()` using standard PyTorch ops.
"""
# Validate arguments.
assert isinstance(x, torch.Tensor) and x.ndim == 4
if f is None:
f = torch.ones([1, 1], dtype=torch.float32, device=x.device)
assert isinstance(f, torch.Tensor) and f.ndim in [1, 2]
assert f.dtype == torch.float32 and not f.requires_grad
batch_size, num_channels, in_height, in_width = x.shape
# upx, upy = _parse_scaling(up)
# downx, downy = _parse_scaling(down)
upx, upy = up, up
downx, downy = down, down
# padx0, padx1, pady0, pady1 = _parse_padding(padding)
padx0, padx1, pady0, pady1 = padding[0], padding[1], padding[2], padding[3]
# Upsample by inserting zeros.
x = x.reshape([batch_size, num_channels, in_height, 1, in_width, 1])
x = torch.nn.functional.pad(x, [0, upx - 1, 0, 0, 0, upy - 1])
x = x.reshape([batch_size, num_channels, in_height * upy, in_width * upx])
# Pad or crop.
x = torch.nn.functional.pad(x, [max(padx0, 0), max(padx1, 0), max(pady0, 0), max(pady1, 0)])
x = x[:, :, max(-pady0, 0): x.shape[2] - max(-pady1, 0), max(-padx0, 0): x.shape[3] - max(-padx1, 0)]
# Setup filter.
f = f * (gain ** (f.ndim / 2))
f = f.to(x.dtype)
if not flip_filter:
f = f.flip(list(range(f.ndim)))
# Convolve with the filter.
f = f[np.newaxis, np.newaxis].repeat([num_channels, 1] + [1] * f.ndim)
if f.ndim == 4:
x = conv2d(input=x, weight=f, groups=num_channels)
else:
x = conv2d(input=x, weight=f.unsqueeze(2), groups=num_channels)
x = conv2d(input=x, weight=f.unsqueeze(3), groups=num_channels)
# Downsample by throwing away pixels.
x = x[:, :, ::downy, ::downx]
return x
def downsample2d(x, f, down=2, padding=0, flip_filter=False, gain=1, impl='cuda'):
r"""Downsample a batch of 2D images using the given 2D FIR filter.
By default, the result is padded so that its shape is a fraction of the input.
User-specified padding is applied on top of that, with negative values
indicating cropping. Pixels outside the image are assumed to be zero.
Args:
x: Float32/float64/float16 input tensor of the shape
`[batch_size, num_channels, in_height, in_width]`.
f: Float32 FIR filter of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable), or
`None` (identity).
down: Integer downsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
padding: Padding with respect to the input. Can be a single number or a
list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
flip_filter: False = convolution, True = correlation (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
impl: Implementation to use. Can be `'ref'` or `'cuda'` (default: `'cuda'`).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
downx, downy = _parse_scaling(down)
# padx0, padx1, pady0, pady1 = _parse_padding(padding)
padx0, padx1, pady0, pady1 = padding, padding, padding, padding
fw, fh = _get_filter_size(f)
p = [
padx0 + (fw - downx + 1) // 2,
padx1 + (fw - downx) // 2,
pady0 + (fh - downy + 1) // 2,
pady1 + (fh - downy) // 2,
]
return upfirdn2d(x, f, down=down, padding=p, flip_filter=flip_filter, gain=gain, impl=impl)
def upsample2d(x, f, up=2, padding=0, flip_filter=False, gain=1, impl='cuda'):
r"""Upsample a batch of 2D images using the given 2D FIR filter.
By default, the result is padded so that its shape is a multiple of the input.
User-specified padding is applied on top of that, with negative values
indicating cropping. Pixels outside the image are assumed to be zero.
Args:
x: Float32/float64/float16 input tensor of the shape
`[batch_size, num_channels, in_height, in_width]`.
f: Float32 FIR filter of the shape
`[filter_height, filter_width]` (non-separable),
`[filter_taps]` (separable), or
`None` (identity).
up: Integer upsampling factor. Can be a single int or a list/tuple
`[x, y]` (default: 1).
padding: Padding with respect to the output. Can be a single number or a
list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
flip_filter: False = convolution, True = correlation (default: False).
gain: Overall scaling factor for signal magnitude (default: 1).
impl: Implementation to use. Can be `'ref'` or `'cuda'` (default: `'cuda'`).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
upx, upy = _parse_scaling(up)
# upx, upy = up, up
padx0, padx1, pady0, pady1 = _parse_padding(padding)
# padx0, padx1, pady0, pady1 = padding, padding, padding, padding
fw, fh = _get_filter_size(f)
p = [
padx0 + (fw + upx - 1) // 2,
padx1 + (fw - upx) // 2,
pady0 + (fh + upy - 1) // 2,
pady1 + (fh - upy) // 2,
]
return upfirdn2d(x, f, up=up, padding=p, flip_filter=flip_filter, gain=gain * upx * upy, impl=impl)
class MinibatchStdLayer(torch.nn.Module):
def __init__(self, group_size, num_channels=1):
super().__init__()
self.group_size = group_size
self.num_channels = num_channels
def forward(self, x):
N, C, H, W = x.shape
G = torch.min(torch.as_tensor(self.group_size),
torch.as_tensor(N)) if self.group_size is not None else N
F = self.num_channels
c = C // F
y = x.reshape(G, -1, F, c, H,
W) # [GnFcHW] Split minibatch N into n groups of size G, and channels C into F groups of size c.
y = y - y.mean(dim=0) # [GnFcHW] Subtract mean over group.
y = y.square().mean(dim=0) # [nFcHW] Calc variance over group.
y = (y + 1e-8).sqrt() # [nFcHW] Calc stddev over group.
y = y.mean(dim=[2, 3, 4]) # [nF] Take average over channels and pixels.
y = y.reshape(-1, F, 1, 1) # [nF11] Add missing dimensions.
y = y.repeat(G, 1, H, W) # [NFHW] Replicate over group and pixels.
x = torch.cat([x, y], dim=1) # [NCHW] Append to input as new channels.
return x
class FullyConnectedLayer(torch.nn.Module):
def __init__(self,
in_features, # Number of input features.
out_features, # Number of output features.
bias=True, # Apply additive bias before the activation function?
activation='linear', # Activation function: 'relu', 'lrelu', etc.
lr_multiplier=1, # Learning rate multiplier.
bias_init=0, # Initial value for the additive bias.
):
super().__init__()
self.weight = torch.nn.Parameter(torch.randn([out_features, in_features]) / lr_multiplier)
self.bias = torch.nn.Parameter(torch.full([out_features], np.float32(bias_init))) if bias else None
self.activation = activation
self.weight_gain = lr_multiplier / np.sqrt(in_features)
self.bias_gain = lr_multiplier
def forward(self, x):
w = self.weight * self.weight_gain
b = self.bias
if b is not None and self.bias_gain != 1:
b = b * self.bias_gain
if self.activation == 'linear' and b is not None:
# out = torch.addmm(b.unsqueeze(0), x, w.t())
x = x.matmul(w.t())
out = x + b.reshape([-1 if i == x.ndim - 1 else 1 for i in range(x.ndim)])
else:
x = x.matmul(w.t())
out = bias_act(x, b, act=self.activation, dim=x.ndim - 1)
return out
def _conv2d_wrapper(x, w, stride=1, padding=0, groups=1, transpose=False, flip_weight=True):
"""Wrapper for the underlying `conv2d()` and `conv_transpose2d()` implementations.
"""
out_channels, in_channels_per_group, kh, kw = _get_weight_shape(w)
# Flip weight if requested.
if not flip_weight: # conv2d() actually performs correlation (flip_weight=True) not convolution (flip_weight=False).
w = w.flip([2, 3])
# Workaround performance pitfall in cuDNN 8.0.5, triggered when using
# 1x1 kernel + memory_format=channels_last + less than 64 channels.
if kw == 1 and kh == 1 and stride == 1 and padding in [0, [0, 0], (0, 0)] and not transpose:
if x.stride()[1] == 1 and min(out_channels, in_channels_per_group) < 64:
if out_channels <= 4 and groups == 1:
in_shape = x.shape
x = w.squeeze(3).squeeze(2) @ x.reshape([in_shape[0], in_channels_per_group, -1])
x = x.reshape([in_shape[0], out_channels, in_shape[2], in_shape[3]])
else:
x = x.to(memory_format=torch.contiguous_format)
w = w.to(memory_format=torch.contiguous_format)
x = conv2d(x, w, groups=groups)
return x.to(memory_format=torch.channels_last)
# Otherwise => execute using conv2d_gradfix.
op = conv_transpose2d if transpose else conv2d
return op(x, w, stride=stride, padding=padding, groups=groups)
def conv2d_resample(x, w, f=None, up=1, down=1, padding=0, groups=1, flip_weight=True, flip_filter=False):
r"""2D convolution with optional up/downsampling.
Padding is performed only once at the beginning, not between the operations.
Args:
x: Input tensor of shape
`[batch_size, in_channels, in_height, in_width]`.
w: Weight tensor of shape
`[out_channels, in_channels//groups, kernel_height, kernel_width]`.
f: Low-pass filter for up/downsampling. Must be prepared beforehand by
calling setup_filter(). None = identity (default).
up: Integer upsampling factor (default: 1).
down: Integer downsampling factor (default: 1).
padding: Padding with respect to the upsampled image. Can be a single number
or a list/tuple `[x, y]` or `[x_before, x_after, y_before, y_after]`
(default: 0).
groups: Split input channels into N groups (default: 1).
flip_weight: False = convolution, True = correlation (default: True).
flip_filter: False = convolution, True = correlation (default: False).
Returns:
Tensor of the shape `[batch_size, num_channels, out_height, out_width]`.
"""
# Validate arguments.
assert isinstance(x, torch.Tensor) and (x.ndim == 4)
assert isinstance(w, torch.Tensor) and (w.ndim == 4) and (w.dtype == x.dtype)
assert f is None or (isinstance(f, torch.Tensor) and f.ndim in [1, 2] and f.dtype == torch.float32)
assert isinstance(up, int) and (up >= 1)
assert isinstance(down, int) and (down >= 1)
# assert isinstance(groups, int) and (groups >= 1), f"!!!!!! groups: {groups} isinstance(groups, int) {isinstance(groups, int)} {type(groups)}"
out_channels, in_channels_per_group, kh, kw = _get_weight_shape(w)
fw, fh = _get_filter_size(f)
# px0, px1, py0, py1 = _parse_padding(padding)
px0, px1, py0, py1 = padding, padding, padding, padding
# Adjust padding to account for up/downsampling.
if up > 1:
px0 += (fw + up - 1) // 2
px1 += (fw - up) // 2
py0 += (fh + up - 1) // 2
py1 += (fh - up) // 2
if down > 1:
px0 += (fw - down + 1) // 2
px1 += (fw - down) // 2
py0 += (fh - down + 1) // 2
py1 += (fh - down) // 2
# Fast path: 1x1 convolution with downsampling only => downsample first, then convolve.
if kw == 1 and kh == 1 and (down > 1 and up == 1):
x = upfirdn2d(x=x, f=f, down=down, padding=[px0, px1, py0, py1], flip_filter=flip_filter)
x = _conv2d_wrapper(x=x, w=w, groups=groups, flip_weight=flip_weight)
return x
# Fast path: 1x1 convolution with upsampling only => convolve first, then upsample.
if kw == 1 and kh == 1 and (up > 1 and down == 1):
x = _conv2d_wrapper(x=x, w=w, groups=groups, flip_weight=flip_weight)
x = upfirdn2d(x=x, f=f, up=up, padding=[px0, px1, py0, py1], gain=up ** 2, flip_filter=flip_filter)
return x
# Fast path: downsampling only => use strided convolution.
if down > 1 and up == 1:
x = upfirdn2d(x=x, f=f, padding=[px0, px1, py0, py1], flip_filter=flip_filter)
x = _conv2d_wrapper(x=x, w=w, stride=down, groups=groups, flip_weight=flip_weight)
return x
# Fast path: upsampling with optional downsampling => use transpose strided convolution.
if up > 1:
if groups == 1:
w = w.transpose(0, 1)
else:
w = w.reshape(groups, out_channels // groups, in_channels_per_group, kh, kw)
w = w.transpose(1, 2)
w = w.reshape(groups * in_channels_per_group, out_channels // groups, kh, kw)
px0 -= kw - 1
px1 -= kw - up
py0 -= kh - 1
py1 -= kh - up
pxt = max(min(-px0, -px1), 0)
pyt = max(min(-py0, -py1), 0)
x = _conv2d_wrapper(x=x, w=w, stride=up, padding=[pyt, pxt], groups=groups, transpose=True,
flip_weight=(not flip_weight))
x = upfirdn2d(x=x, f=f, padding=[px0 + pxt, px1 + pxt, py0 + pyt, py1 + pyt], gain=up ** 2,
flip_filter=flip_filter)
if down > 1:
x = upfirdn2d(x=x, f=f, down=down, flip_filter=flip_filter)
return x
# Fast path: no up/downsampling, padding supported by the underlying implementation => use plain conv2d.
if up == 1 and down == 1:
if px0 == px1 and py0 == py1 and px0 >= 0 and py0 >= 0:
return _conv2d_wrapper(x=x, w=w, padding=[py0, px0], groups=groups, flip_weight=flip_weight)
# Fallback: Generic reference implementation.
x = upfirdn2d(x=x, f=(f if up > 1 else None), up=up, padding=[px0, px1, py0, py1], gain=up ** 2,
flip_filter=flip_filter)
x = _conv2d_wrapper(x=x, w=w, groups=groups, flip_weight=flip_weight)
if down > 1:
x = upfirdn2d(x=x, f=f, down=down, flip_filter=flip_filter)
return x
class Conv2dLayer(torch.nn.Module):
def __init__(self,
in_channels, # Number of input channels.
out_channels, # Number of output channels.
kernel_size, # Width and height of the convolution kernel.
bias=True, # Apply additive bias before the activation function?
activation='linear', # Activation function: 'relu', 'lrelu', etc.
up=1, # Integer upsampling factor.
down=1, # Integer downsampling factor.
resample_filter=[1, 3, 3, 1], # Low-pass filter to apply when resampling activations.
conv_clamp=None, # Clamp the output to +-X, None = disable clamping.
channels_last=False, # Expect the input to have memory_format=channels_last?
trainable=True, # Update the weights of this layer during training?
):
super().__init__()
self.activation = activation
self.up = up
self.down = down
self.register_buffer('resample_filter', setup_filter(resample_filter))
self.conv_clamp = conv_clamp
self.padding = kernel_size // 2
self.weight_gain = 1 / np.sqrt(in_channels * (kernel_size ** 2))
self.act_gain = activation_funcs[activation].def_gain
memory_format = torch.channels_last if channels_last else torch.contiguous_format
weight = torch.randn([out_channels, in_channels, kernel_size, kernel_size]).to(memory_format=memory_format)
bias = torch.zeros([out_channels]) if bias else None
if trainable:
self.weight = torch.nn.Parameter(weight)
self.bias = torch.nn.Parameter(bias) if bias is not None else None
else:
self.register_buffer('weight', weight)
if bias is not None:
self.register_buffer('bias', bias)
else:
self.bias = None
def forward(self, x, gain=1):
w = self.weight * self.weight_gain
x = conv2d_resample(x=x, w=w, f=self.resample_filter, up=self.up, down=self.down,
padding=self.padding)
act_gain = self.act_gain * gain
act_clamp = self.conv_clamp * gain if self.conv_clamp is not None else None
out = bias_act(x, self.bias, act=self.activation, gain=act_gain, clamp=act_clamp)
return out

4
lama_cleaner/model_manager.py
View File

@ -1,3 +1,4 @@
from lama_cleaner.model.fcf import FcF
from lama_cleaner.model.lama import LaMa
from lama_cleaner.model.ldm import LDM
from lama_cleaner.model.mat import MAT
@ -8,7 +9,8 @@ models = {
'lama': LaMa,
'ldm': LDM,
'zits': ZITS,
'mat': MAT
'mat': MAT,
'fcf': FcF
}

27
lama_cleaner/tests/test_model.py
View File

@ -1,8 +1,6 @@
import os
from pathlib import Path
import cv2
import numpy as np
import pytest
from lama_cleaner.model_manager import ModelManager
@ -16,14 +14,9 @@ def get_data(fx=1, fy=1.0):
img = cv2.cvtColor(img, cv2.COLOR_BGRA2RGB)
mask = cv2.imread(str(current_dir / "mask.png"), cv2.IMREAD_GRAYSCALE)
# img = cv2.imread("/Users/qing/code/github/MAT/test_sets/Places/images/test1.jpg")
# img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
# mask = cv2.imread("/Users/qing/code/github/MAT/test_sets/Places/masks/mask1.png", cv2.IMREAD_GRAYSCALE)
# mask = 255 - mask
if fx != 1:
img = cv2.resize(img, None, fx=fx, fy=fy)
mask = cv2.resize(mask, None, fx=fx, fy=fy)
img = cv2.resize(img, None, fx=fx, fy=fy, interpolation=cv2.INTER_AREA)
mask = cv2.resize(mask, None, fx=fx, fy=fy, interpolation=cv2.INTER_NEAREST)
return img, mask
@ -134,3 +127,19 @@ def test_mat(strategy):
cfg,
f"mat_{strategy.capitalize()}_result.png",
)
@pytest.mark.parametrize(
"strategy", [HDStrategy.ORIGINAL]
)
def test_fcf(strategy):
model = ModelManager(name="fcf", device="cpu")
cfg = get_config(strategy)
assert_equal(
model,
cfg,
f"fcf_{strategy.capitalize()}_result.png",
fx=2,
fy=2
)