lzp1510681927的博客

error: ‘filter2D’ was not declared in this scope错误原因：google： 'filter2D' : is not a member of 'cv' 没有添加对应的库：#include<opencv2/imgproc/imgproc.hpp>

树莓派 升级软件包 pacman -Syu 后安装（任意？）软件出现错误error: signature from "Arch Linux ARM Build System <builder@archlinuxarm.org>" is unknown trust解决：sudo pacman-key --initsudo pacman-key --populate archlinuxar...

添加摄像头： 在/boot/config.txt文件添加： start_file=start_x.elf fixup_file=fixup_x.dat disable_camera_led=1 重启树莓派。 opencv调用报错： 错误： Error: Assertion failed (scn == 3 || scn == 4) in cvtColor, file /buil...