main_test_converse_dncnn.py

import os.path
import logging
import argparse
import numpy as np
from datetime import datetime
from collections import OrderedDict
import torch
from utils import utils_logger
from utils import utils_model
from utils import utils_image as util


'''
Spyder (Python 3.12)
PyTorch 2.4.0
Windows 10 or Linux

Kai Zhang (kaizhang@nju.edu.cn)
github: https://github.com/cszn


% If you have any question, please feel free to contact with me.
% Kai Zhang (e-mail: kaizhang@nju.edu.cn; github: https://github.com/cszn)

by Xuhong Huang (22/June/2025)
'''

"""
# --------------------------------------------
|--model_zoo                # model_zoo
   |--converse_dncnn        # model_name
|--testset                  # testsets
   |--set12                 # testset_name
   |--bsd68
|--results                  # results      
   |--set12_converse_dncnn  # result_name = testset_name + '_' + model_name
   |--bsd68_converse_dncnn
# --------------------------------------------
"""


def main():

    # ----------------------------------------
    # Preparation
    # ----------------------------------------
    parser = argparse.ArgumentParser()
    parser.add_argument('--model_name', type=str, default="converse_dncnn")
    parser.add_argument('--testset_name', type=str, default='set12', help='set12, bsd68')
    parser.add_argument('--noise_level_img', type=int, default=25, help='noise level: 15, 25, 50')
    parser.add_argument('--x8', type=bool, default=False, help='x8 to boost performance')
    parser.add_argument('--show_img', type=bool, default=False, help='show the image')
    parser.add_argument('--model_pool', type=str, default='model_zoo', help='path of model_zoo')
    parser.add_argument('--testsets', type=str, default='testsets', help='path of testing folder')
    parser.add_argument('--results', type=str, default='results', help='path of results')
    parser.add_argument('--need_degradation', type=bool, default=True, help='add noise or not')
    parser.add_argument('--task_current', type=str, default='dn', help='dn for denoising, fixed!')
    parser.add_argument('--sf', type=int, default=1, help='unused for denoising')
    args = parser.parse_args()

    n_channels = 1

    result_name = args.testset_name + '_' + args.model_name     # fixed
    border = args.sf if args.task_current == 'sr' else 0        # shave boader to calculate PSNR and SSIM
    model_path = os.path.join(args.model_pool, args.model_name+'.pth')

    # ----------------------------------------
    # L_path, E_path, H_path
    # ----------------------------------------
    L_path = os.path.join(args.testsets, args.testset_name)     # L_path, for Low-quality images
    H_path = L_path                                             # H_path, for High-quality images
    E_path = os.path.join(args.results, result_name)            # E_path, for Estimated images
    util.mkdir(E_path)  

    if H_path == L_path:
        args.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.converse_dncnn import ConverseDnCNN as net
    model = net(in_channels=1, kernel_size=7, num_features=64, padding=6, padding_mode='circular')
    
    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'] = []

    logger.info('model_name:{}, image sigma:{}'.format(args.model_name, args.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)

        if args.need_degradation:  # degradation process
            np.random.seed(seed=0)  # for reproducibility
            img_L += np.random.normal(0, args.noise_level_img/255., img_L.shape)

        util.imshow(util.single2uint(img_L), title='Noisy image with noise level {}'.format(args.noise_level_img)) if args.show_img else None

        img_L = util.single2tensor4(img_L)
        img_L = img_L.to(device)

        # ------------------------------------
        # (2) img_E
        # ------------------------------------

        if not args.x8:
            img_E = model(img_L)
        else:
            img_E = utils_model.test_mode(model, img_L, mode=3)

        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()

            # --------------------------------
            # 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 args.show_img else None

        # ------------------------------------
        # save results
        # ------------------------------------

        util.imsave(img_E, os.path.join(E_path, img_name+ext))

    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) - {} - PSNR: {:.2f} dB; SSIM: {:.4f}'.format(result_name, ave_psnr, ave_ssim))

if __name__ == '__main__':
    main()