Neo的程式人生

1.transforms.ToTensor() ToTensor()將shape(H,W,C)轉為shape(C,H,W)的tensor, 將每一個數值歸一化為[0,1], 直接將數值除255 2.transforms,Normalize() transforms.Compose([transforms.ToTensor(),transforms.Normalize(std=(0.5,0.5,0.5),mean=(0.5,0.5,0.5))]), 將輸入歸一化至[0,1], 再使用公式 (x-mean)/std, 將圖片的三通到分佈至[-1,1]

安裝過程噴錯 Error using mex Unknown MEX argument '-R2017b-largeArrayDims'. Error in mexopencv.make (line 97) if ~opts.dryrun, eval(cmd); end 解決方法，去make.m的第275~281行，註解掉 % real/imaginary storage format for complex arrays if ~mexopencv.isOctave() && ~verLessThan('matlab', '9.4') % keep using the "separate complex storage", as opposed to the % "interleaved complex storage" introduced in R2018a % (see MX_HAS_INTERLEAVED_COMPLEX) %mex_flags = ['-R2017b' mex_flags]; end

在windows 的 cmd 下 ls 會出現 'ls' 不是內部或外部命令、可執行的程式或批次檔。 解決方法 : 在C:/Windows下新增 'ls.bat'，內容為 : @echo off dir 完成!

先下載OpenCV，版本自選，應該會得到xxx.zip - 安裝相關套件 $yum install cmake $yum install gcc gcc-c++ kernel-devel gcc-essential gcc-gfortran $yum install git ibgnomeui-devel gtk2 gtk2-devel gtk2-devel-docs - 確認自己有沒有pkg-config --version ，我是使用 0.27.1，沒有的話自行裝一下 - 安裝epel擴展及其他相關擴展 $yum -y install epel-release $yum localinstall –nogpgcheck https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm $yum localinstall –nogpgcheck https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-7.noarch.rpm - 安裝ffmpeg-deve $yum -y install ffmpeg ffmpeg-devel $ffmpeg -version - 安裝opencv其他依賴 $yum install python-devel numpy $yum install libdc1394-devel $yum install libv4l-devel $yum install gstreamer-plugins-base-devel - Cmake編譯 $cd opencv $mkdir build $cd build $cmake -D WITH_TBB=ON -D WITH_EIGEN=ON ..  $cmake -D BUILD_DOCS=ON -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D BUILD_EXAMPLES=OFF ..  $cmake -D WITH_OPENCL=OFF -D WITH_CUDA=OFF -D BUILD_opencv_gpu=OFF -D BUILD_opencv_gpua