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main_dpir_denoising.py
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main_dpir_denoising.py
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import os.path
import logging
import numpy as np
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 3.7)
PyTorch 1.6.0
Windows 10 or Linux
Kai Zhang ([email protected])
github: https://github.com/cszn/DPIR
https://github.com/cszn/IRCNN
https://github.com/cszn/KAIR
@article{zhang2020plug,
title={Plug-and-Play Image Restoration with Deep Denoiser Prior},
author={Zhang, Kai and Li, Yawei and Zuo, Wangmeng and Zhang, Lei and Van Gool, Luc and Timofte, Radu},
journal={arXiv preprint},
year={2020}
}
% If you have any question, please feel free to contact with me.
% Kai Zhang (e-mail: [email protected]; homepage: https://cszn.github.io/)
by Kai Zhang (01/August/2020)
# --------------------------------------------
|--model_zoo # model_zoo
|--drunet_gray # model_name, for color images
|--drunet_color
|--testset # testsets
|--set12 # testset_name
|--bsd68
|--cbsd68
|--results # results
|--set12_dn_drunet_gray # result_name = testset_name + '_' + 'dn' + model_name
|--set12_dn_drunet_color
# --------------------------------------------
"""
def main():
# ----------------------------------------
# Preparation
# ----------------------------------------
noise_level_img = 15 # set AWGN noise level for noisy image
noise_level_model = noise_level_img # set noise level for model
model_name = 'drunet_gray' # set denoiser model, 'drunet_gray' | 'drunet_color'
testset_name = 'bsd68' # set test set, 'bsd68' | 'cbsd68' | 'set12'
x8 = False # default: False, x8 to boost performance
show_img = False # default: False
border = 0 # shave boader to calculate PSNR and SSIM
if 'color' in model_name:
n_channels = 3 # 3 for color image
else:
n_channels = 1 # 1 for grayscale image
model_pool = 'model_zoo' # fixed
testsets = 'testsets' # fixed
results = 'results' # fixed
task_current = 'dn' # 'dn' for denoising
result_name = testset_name + '_' + task_current + '_' + model_name
model_path = os.path.join(model_pool, model_name+'.pth')
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
torch.cuda.empty_cache()
# ----------------------------------------
# L_path, E_path, H_path
# ----------------------------------------
L_path = os.path.join(testsets, testset_name) # L_path, for Low-quality images
E_path = os.path.join(results, result_name) # E_path, for Estimated images
util.mkdir(E_path)
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)
# ----------------------------------------
# load model
# ----------------------------------------
from models.network_unet import UNetRes as net
model = net(in_nc=n_channels+1, out_nc=n_channels, nc=[64, 128, 256, 512], nb=4, act_mode='R', downsample_mode="strideconv", upsample_mode="convtranspose")
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:{}, model sigma:{}, image sigma:{}'.format(model_name, noise_level_img, noise_level_model))
logger.info(L_path)
L_paths = util.get_image_paths(L_path)
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_H = util.imread_uint(img, n_channels=n_channels)
img_L = util.uint2single(img_H)
# Add noise without clipping
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='Noisy image with noise level {}'.format(noise_level_img)) if show_img else None
img_L = util.single2tensor4(img_L)
img_L = torch.cat((img_L, torch.FloatTensor([noise_level_model/255.]).repeat(1, 1, img_L.shape[2], img_L.shape[3])), dim=1)
img_L = img_L.to(device)
# ------------------------------------
# (2) img_E
# ------------------------------------
if not x8 and img_L.size(2)//8==0 and img_L.size(3)//8==0:
img_E = model(img_L)
elif not x8 and (img_L.size(2)//8!=0 or img_L.size(3)//8!=0):
img_E = utils_model.test_mode(model, img_L, refield=64, mode=5)
elif x8:
img_E = utils_model.test_mode(model, img_L, mode=3)
img_E = util.tensor2uint(img_E)
# --------------------------------
# PSNR and SSIM
# --------------------------------
if n_channels == 1:
img_H = img_H.squeeze()
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))
# ------------------------------------
# save results
# ------------------------------------
util.imsave(img_E, os.path.join(E_path, img_name+ext))
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()