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| import os.path | |
| import logging | |
| import re | |
| import numpy as np | |
| from collections import OrderedDict | |
| import torch | |
| from utils import utils_logger | |
| from utils import utils_image as util | |
| from utils import utils_model | |
| ''' | |
| Spyder (Python 3.6) | |
| PyTorch 1.1.0 | |
| Windows 10 or Linux | |
| Kai Zhang (cskaizhang@gmail.com) | |
| github: https://github.com/cszn/KAIR | |
| If you have any question, please feel free to contact with me. | |
| Kai Zhang (e-mail: cskaizhang@gmail.com) | |
| (github: https://github.com/cszn/KAIR) | |
| by Kai Zhang (12/Dec./2019) | |
| ''' | |
| """ | |
| # -------------------------------------------- | |
| # simplified information multi-distillation | |
| # network (IMDN) for SR | |
| # -------------------------------------------- | |
| @inproceedings{hui2019lightweight, | |
| title={Lightweight Image Super-Resolution with Information Multi-distillation Network}, | |
| author={Hui, Zheng and Gao, Xinbo and Yang, Yunchu and Wang, Xiumei}, | |
| booktitle={Proceedings of the 27th ACM International Conference on Multimedia (ACM MM)}, | |
| pages={2024--2032}, | |
| year={2019} | |
| } | |
| @inproceedings{zhang2019aim, | |
| title={AIM 2019 Challenge on Constrained Super-Resolution: Methods and Results}, | |
| author={Kai Zhang and Shuhang Gu and Radu Timofte and others}, | |
| booktitle={IEEE International Conference on Computer Vision Workshops}, | |
| year={2019} | |
| } | |
| # -------------------------------------------- | |
| |--model_zoo # model_zoo | |
| |--imdn_x4 # model_name, optimized for PSNR | |
| |--testset # testsets | |
| |--set5 # testset_name | |
| |--srbsd68 | |
| |--results # results | |
| |--set5_imdn_x4 # result_name = testset_name + '_' + model_name | |
| # -------------------------------------------- | |
| """ | |
| def main(): | |
| # ---------------------------------------- | |
| # Preparation | |
| # ---------------------------------------- | |
| model_name = 'imdn_x4' # 'imdn_x4' | |
| testset_name = 'set5' # test set, 'set5' | 'srbsd68' | |
| need_degradation = True # default: True | |
| x8 = False # default: False, x8 to boost performance, default: False | |
| sf = [int(s) for s in re.findall(r'\d+', model_name)][0] # scale factor | |
| show_img = False # default: False | |
| task_current = 'sr' # 'dn' for denoising | 'sr' for super-resolution | |
| n_channels = 3 # fixed | |
| model_pool = 'model_zoo' # fixed | |
| testsets = 'testsets' # fixed | |
| results = 'results' # fixed | |
| noise_level_img = 0 # fixed: 0, noise level for LR image | |
| result_name = testset_name + '_' + model_name | |
| border = sf if task_current == 'sr' else 0 # shave boader to calculate PSNR and SSIM | |
| model_path = os.path.join(model_pool, model_name+'.pth') | |
| # ---------------------------------------- | |
| # L_path, E_path, H_path | |
| # ---------------------------------------- | |
| L_path = os.path.join(testsets, testset_name) # L_path, for Low-quality images | |
| H_path = L_path # H_path, for High-quality images | |
| E_path = os.path.join(results, result_name) # E_path, for Estimated images | |
| util.mkdir(E_path) | |
| if H_path == L_path: | |
| need_degradation = True | |
| logger_name = result_name | |
| utils_logger.logger_info(logger_name, log_path=os.path.join(E_path, logger_name+'.log')) | |
| logger = logging.getLogger(logger_name) | |
| need_H = True if H_path is not None else False | |
| device = torch.device('cuda' if torch.cuda.is_available() else 'cpu') | |
| # ---------------------------------------- | |
| # load model | |
| # ---------------------------------------- | |
| from models.network_imdn import IMDN as net | |
| model = net(in_nc=n_channels, out_nc=n_channels, nc=64, nb=8, upscale=4, act_mode='L', upsample_mode='pixelshuffle') | |
| model.load_state_dict(torch.load(model_path), strict=True) | |
| model.eval() | |
| for k, v in model.named_parameters(): | |
| v.requires_grad = False | |
| model = model.to(device) | |
| logger.info('Model path: {:s}'.format(model_path)) | |
| number_parameters = sum(map(lambda x: x.numel(), model.parameters())) | |
| logger.info('Params number: {}'.format(number_parameters)) | |
| test_results = OrderedDict() | |
| test_results['psnr'] = [] | |
| test_results['ssim'] = [] | |
| test_results['psnr_y'] = [] | |
| test_results['ssim_y'] = [] | |
| logger.info('model_name:{}, image sigma:{}'.format(model_name, noise_level_img)) | |
| logger.info(L_path) | |
| L_paths = util.get_image_paths(L_path) | |
| H_paths = util.get_image_paths(H_path) if need_H else None | |
| for idx, img in enumerate(L_paths): | |
| # ------------------------------------ | |
| # (1) img_L | |
| # ------------------------------------ | |
| img_name, ext = os.path.splitext(os.path.basename(img)) | |
| # logger.info('{:->4d}--> {:>10s}'.format(idx+1, img_name+ext)) | |
| img_L = util.imread_uint(img, n_channels=n_channels) | |
| img_L = util.uint2single(img_L) | |
| # degradation process, bicubic downsampling | |
| if need_degradation: | |
| img_L = util.modcrop(img_L, sf) | |
| img_L = util.imresize_np(img_L, 1/sf) | |
| # img_L = util.uint2single(util.single2uint(img_L)) | |
| # np.random.seed(seed=0) # for reproducibility | |
| # img_L += np.random.normal(0, noise_level_img/255., img_L.shape) | |
| util.imshow(util.single2uint(img_L), title='LR image with noise level {}'.format(noise_level_img)) if show_img else None | |
| img_L = util.single2tensor4(img_L) | |
| img_L = img_L.to(device) | |
| # ------------------------------------ | |
| # (2) img_E | |
| # ------------------------------------ | |
| if not x8: | |
| img_E = model(img_L) | |
| else: | |
| img_E = utils_model.test_mode(model, img_L, mode=3, sf=sf) | |
| img_E = util.tensor2uint(img_E) | |
| if need_H: | |
| # -------------------------------- | |
| # (3) img_H | |
| # -------------------------------- | |
| img_H = util.imread_uint(H_paths[idx], n_channels=n_channels) | |
| img_H = img_H.squeeze() | |
| img_H = util.modcrop(img_H, sf) | |
| # -------------------------------- | |
| # PSNR and SSIM | |
| # -------------------------------- | |
| psnr = util.calculate_psnr(img_E, img_H, border=border) | |
| ssim = util.calculate_ssim(img_E, img_H, border=border) | |
| test_results['psnr'].append(psnr) | |
| test_results['ssim'].append(ssim) | |
| logger.info('{:s} - PSNR: {:.2f} dB; SSIM: {:.4f}.'.format(img_name+ext, psnr, ssim)) | |
| util.imshow(np.concatenate([img_E, img_H], axis=1), title='Recovered / Ground-truth') if show_img else None | |
| if np.ndim(img_H) == 3: # RGB image | |
| img_E_y = util.rgb2ycbcr(img_E, only_y=True) | |
| img_H_y = util.rgb2ycbcr(img_H, only_y=True) | |
| psnr_y = util.calculate_psnr(img_E_y, img_H_y, border=border) | |
| ssim_y = util.calculate_ssim(img_E_y, img_H_y, border=border) | |
| test_results['psnr_y'].append(psnr_y) | |
| test_results['ssim_y'].append(ssim_y) | |
| # ------------------------------------ | |
| # save results | |
| # ------------------------------------ | |
| util.imsave(img_E, os.path.join(E_path, img_name+'.png')) | |
| if need_H: | |
| ave_psnr = sum(test_results['psnr']) / len(test_results['psnr']) | |
| ave_ssim = sum(test_results['ssim']) / len(test_results['ssim']) | |
| logger.info('Average PSNR/SSIM(RGB) - {} - x{} --PSNR: {:.2f} dB; SSIM: {:.4f}'.format(result_name, sf, ave_psnr, ave_ssim)) | |
| if np.ndim(img_H) == 3: | |
| ave_psnr_y = sum(test_results['psnr_y']) / len(test_results['psnr_y']) | |
| ave_ssim_y = sum(test_results['ssim_y']) / len(test_results['ssim_y']) | |
| logger.info('Average PSNR/SSIM( Y ) - {} - x{} - PSNR: {:.2f} dB; SSIM: {:.4f}'.format(result_name, sf, ave_psnr_y, ave_ssim_y)) | |
| if __name__ == '__main__': | |
| main() | |