import cv2 import numpy as np import torch from loguru import logger from iopaint.helper import download_model from iopaint.plugins.base_plugin import BasePlugin from iopaint.schema import RunPluginRequest, RealESRGANModel class RealESRGANUpscaler(BasePlugin): name = "RealESRGAN" support_gen_image = True def __init__(self, name, device, no_half=False): super().__init__() from basicsr.archs.rrdbnet_arch import RRDBNet from realesrgan import RealESRGANer from realesrgan.archs.srvgg_arch import SRVGGNetCompact REAL_ESRGAN_MODELS = { RealESRGANModel.realesr_general_x4v3: { "url": "https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.5.0/realesr-general-x4v3.pth", "scale": 4, "model": lambda: SRVGGNetCompact( num_in_ch=3, num_out_ch=3, num_feat=64, num_conv=32, upscale=4, act_type="prelu", ), "model_md5": "91a7644643c884ee00737db24e478156", }, RealESRGANModel.RealESRGAN_x4plus: { "url": "https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.0/RealESRGAN_x4plus.pth", "scale": 4, "model": lambda: RRDBNet( num_in_ch=3, num_out_ch=3, num_feat=64, num_block=23, num_grow_ch=32, scale=4, ), "model_md5": "99ec365d4afad750833258a1a24f44ca", }, RealESRGANModel.RealESRGAN_x4plus_anime_6B: { "url": "https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.2.4/RealESRGAN_x4plus_anime_6B.pth", "scale": 4, "model": lambda: RRDBNet( num_in_ch=3, num_out_ch=3, num_feat=64, num_block=6, num_grow_ch=32, scale=4, ), "model_md5": "d58ce384064ec1591c2ea7b79dbf47ba", }, } if name not in REAL_ESRGAN_MODELS: raise ValueError(f"Unknown RealESRGAN model name: {name}") model_info = REAL_ESRGAN_MODELS[name] model_path = download_model(model_info["url"], model_info["model_md5"]) logger.info(f"RealESRGAN model path: {model_path}") self.model = RealESRGANer( scale=model_info["scale"], model_path=model_path, model=model_info["model"](), half=True if "cuda" in str(device) and not no_half else False, tile=512, tile_pad=10, pre_pad=10, device=device, ) def gen_image(self, rgb_np_img, req: RunPluginRequest) -> np.ndarray: bgr_np_img = cv2.cvtColor(rgb_np_img, cv2.COLOR_RGB2BGR) logger.info(f"RealESRGAN input shape: {bgr_np_img.shape}, scale: {req.scale}") result = self.forward(bgr_np_img, req.scale) logger.info(f"RealESRGAN output shape: {result.shape}") return result @torch.inference_mode() def forward(self, bgr_np_img, scale: float): # 输出是 BGR upsampled = self.model.enhance(bgr_np_img, outscale=scale)[0] return upsampled def check_dep(self): try: import realesrgan except ImportError: return "RealESRGAN is not installed, please install it first. pip install realesrgan"