代码程序相关问题故障解决目录

1. Python

1.1 OpenCV

1.1.1 由于OpenCV接口更改导致的错误 1.2 Tensorflow

1.2.1 模型训练 2. C++3. 其他

error: ‘CV_LOAD_IMAGE_UNCHANGED’ was not declared in this scope
CV_LOAD_IMAGE_UNCHANGED改为cv::IMREAD_UNCHANGED

error: ‘CV_LOAD_IMAGE_GRAYSCALE’ was not declared in this scope
CV_LOAD_IMAGE_GRAYSCALE改为IMREAD_GRAYSCALE

error: ‘CV_MINMAX’ was not declared in this scope
CV_MINMAX改成NORM_MINMAX

error: ‘CV_BGR2GRAY’ was not declared in this scope cvtColor
添加#include

Process finished with exit code 137 (interrupted by signal 9: SIGKILL)

原因：

程序并没有运行完，系统强制杀死进程，一般来说是因为内存不足或者CPU不够用。
内存扩张可能原因：loss或者网络的输出不断积累导致计算图不断扩张

解决办法：

选择小的batch_size，或者不要把一整个大的文件一次性读到内存里；在训练的循环过程中，需要用到loss，则用loss.data[0]

参考：

Process finished with exit code 137 (interrupted by signal 9: SIGKILL)
tensorflow: interrupted by signal 9: SIGKILL
Pytorch Process finished with exit code137(interrupted by signal9:SIGKILL)

「git失败」gnutls_handshake() failed: The TLS connection was non-properly terminated.
重置代理

git config --global  --unset https.https://github.com.proxy 
git config --global  --unset http.https://github.com.proxy 

Failed to load module “canberra-gtk-module”

GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported.
Failed to load module “canberra-gtk-module”

解决 canberra-gtk-module 加载失败的问题

sudo apt-get install libcanberra-gtk-module -y
sudo ln -s /usr/lib/x86_64-linux-gnu/gtk-2.0/modules/libcanberra-gtk-module.so /usr/lib/libcanberra-gtk-module.so

relocation R_X86_64_PC32 against symbol `XXXX’ can not be used when making a shared object; recompile with -fPIC
有冲突，如在安装opencv时，与gflags冲突：

[ 94%] linking CXX shared library …/…/lib/libopencv_sfm.so
/usr/bin/ld: /usr/local/lib/libgflags_nothreads.a(gflags.cc.o): relocation R_X86_64_PC32 against symbol `_ZN22gflags_mutex_namespace5MutexD1Ev’ can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: 最后的链结失败: 错误的值
collect2: error: ld returned 1 exit status
modules/sfm/CMakeFiles/opencv_sfm.dir/build.make:327: recipe for target ‘lib/libopencv_sfm.so.4.5.2’ failed

可将libgflags_nothreads.a重命名再安装，或先卸载gflags，或交换gflags与opencv的安装次序。

明明已经安装了某个模块，python报错：importError: No module named ***

[glog安装]Could NOT find GTest (missing: GTEST_LIBRARY GTEST_MAIN_LIBRARY)

GTest虽然安装过，但是找不到头文件之类
解决方法如下：
sudo apt-get install libgtest-dev
sudo apt-get install cmake
cd
cd /usr/src/gtest
sudo cmake CMakeLists.txt
sudo make
sudo cp *.a /usr/lib
原文链接：https://blog.csdn.net/Numberors/article/details/109765131

[glog安装]Could NOT find Unwind (missing: Unwind_INCLUDE_DIR Unwind_LIBRARY Unwind_PLATFORM_LIBRARY)

sudo apt-get install libunwind-dev

[opencv安装，进行sudo make时]make[2]: *** 没有规则可制作目标“/usr/local/lib/libgflags_nothreads.a”，由“lib/libopencv_sfm.so.4.5.2” 需求。 停止。
在usr/lib下查找libgflags_nothreads.a，将其软连接到/usr/local/lib/libgflags_nothreads.a，解决。

使用matplotlib显示中文字符 －> 解决方法

Failed to get convolution algorithm. This is probably because cuDNN failed to initialize －> 解决方法