https://github.com/uinika/raspberrypi-opencv-patch
Missing .i & .h file during installation of OpenCV on Raspberry Pi 4B.
https://github.com/uinika/raspberrypi-opencv-patch
opencv raspberry-pi-4
Last synced: about 1 month ago
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Missing .i & .h file during installation of OpenCV on Raspberry Pi 4B.
- Host: GitHub
- URL: https://github.com/uinika/raspberrypi-opencv-patch
- Owner: uinika
- Created: 2020-03-14T08:38:49.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2020-03-14T19:57:55.000Z (about 6 years ago)
- Last Synced: 2024-12-27T14:44:32.043Z (over 1 year ago)
- Topics: opencv, raspberry-pi-4
- Language: SWIG
- Homepage: https://uinika.gitee.io/embedded/RaspberryPi.html
- Size: 1.54 MB
- Stars: 1
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# raspberry-pi-opencv-patch
Missing `.i` & `.h` file during installation of opencv on Raspberry Pi 4B.
由于 Raspberry Pi 4B 上编译`opencv 3.4.9`以及`opencv_contrib-3.4.9`的依赖过程当中，由于国内网络屏蔽造成的部分`.i`文件无法正常下载，而在执行`sudo make install`命令时出现`~/opencv_contrib/modules/xfeatures2d/src/boostdesc.cpp:673:20: fatal error: boostdesc_bgm.i: No such file or directory`等一系列错误信息。
## Problem
通过打开`/home/pi/Downloads/opencv/build`目录（即源码编译后的二进制文件所在目录）下的`CMakeDownloadLog.txt`日志文件，搜索如下缺失的`.i`文件名称：
```
boostdesc_bgm.i
boostdesc_lbgm.i
boostdesc_bgm_bi.i
boostdesc_bgm_hd.i
boostdesc_binboost_064.i
boostdesc_binboost_128.i
boostdesc_binboost_256.i
vgg_generated_48.i
vgg_generated_64.i
vgg_generated_80.i
vgg_generated_120.i
```
## Solution
找到对应的下载地址，完成下载后将其拷贝至`/home/pi/Downloads/opencv_contrib-3.4.9/modules/xfeatures2d/src`目录下面，重新执行`sudo make install`即可解决报错问题。
> **注意**：上述`.i`依赖文件已经全部放入本项目根目录下，适用于`opencv 3.4.9`和`opencv_contrib-3.4.9`版本的编译。
## Appendix
对于在执行`sudo make install`命令过程当中，出现的无法找到`cuda.hpp`、`xfeatures2d.hpp`、`nonfree.hpp`头文件的情况，只需要用文件查找命令，查询到该文件的所在位置：
```
find -name "xxx.hpp"
```
然后将头文件所在的`/home/...`路径名，添加至报错的`.cpp`源代码文件的`#include`预包含指令里面，即可以解决问题。