# level 相乘 print(ms_ssim_val.shape) if size_average: return ms_ssim_val.mean() else: # 返回各个channel的值 return ms_ssim_val.flatten(2).mean(1) class SSIMLoss(paddle.nn.Layer): """ 1. 继承paddle.nn.Layer """ def __init__(self, window_size=11, channel=3, data_range=255...
paths =None# return None if dataroot is NoneifdatarootisnotNone: paths =sorted(_get_paths_from_images(dataroot))returnpathsdef_get_paths_from_images(path):assertos.path.isdir(path),'{:s} is not a valid directory'.format(path) images = []fordirpath, _, fnamesinsorted(os.walk(path)...
for i in range(len(img) - 1): if (count == 1): image3.append(img[i]) if img[i] == img[i + 1]: count = count + 1 if i == len(img) - 2: image3.append(img[i]) data.append(count) else: data.append(count) count = 1 if (img[len(img) - 1] != img[-1]): i...
在训练过程中,我们会定期计算 PSNR,并将其存储在列表中,以便于后面绘图时使用。 deftrain_model(model,data,num_epochs=20,lr=0.001):optimizer=torch.optim.Adam(model.parameters(),lr=lr)psnr_values=[]forepochinrange(num_epochs):forimgindata:img=img.unsqueeze(0)# 增加批次维度optimizer.zero_grad()r...
If the images are of data typedoubleorsingle, thenpsnrassumes that image data is in the range [0, 1]. The default value ofpeakvalis1. If the images are of integer data types, then the default value ofpeakvalis the largest value allowed by the range of the class. Foruint8data, the ...
IfAandrefhave data typesingle, thensnrhas data typesingle. Otherwise,snrhas data typedouble. Algorithms Thepsnrfunction implements this equation to calculate PSNR: PSNR=10log10(peakval2/MSE) peakvalis either specified by the user or taken from the range of the image data type. For example, ...
when refined the signal to notify the database for the values in the form should be a singular channel image it should have the pixel range of about 5 below this pixel range we propose the signal will be used to enhancing the channel to track the appropriate pixel range switch over from ...
% oriData3_noise = OriData3; %% simulated experiment %---load image--- nSigrange = [10,30,50,100]; for ii=1:4 nSig = nSigrange(ii)/255 % MSI % load('toy');OriData3 = msi/255; % noiselevel = nSig*ones(1,31); % for case 1 % Pavia load Pavia_80.mat noiselevel = ...
wider SIMD (AVX2) implementation for most data processing functions runtime adjustable component weights for IV-PSNR metric adjustable search range for IV-PSNR metric adjustable unnoticeable color difference threshold coeff for IV-PSNR metric reading parameters from config file ...
3.双击打开xls文件，弹出的各种信息可以无视，点击第一个表格“Sample data sheet”可以看到第一行中的宏定义示例 BJM(rangeRef,rangeNew,rateMode)其中第一个参数是参考值，一般为HM输出值，包含4行2列共8个数据。其中左边一列是bitrate，右边一列是对应的PSNR。也可以是2行4列格式，上为bitrate，...