Repository: opencv
Issue: Opencv installation directory for raspbian bullseye
Labels: duplicate,invalid

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##### System information (version)
<!-- Example
- libopencv-dev:armhf/bullseye 4.5.1+dfsg-5 uptodate
- Operating System / Platform => Raspbian GNU/Linux 11 (bullseye)
- Compiler => gcc (Raspbian 10.2.1-6+rpi1) 10.2.1 20210110
-->

- OpenCV => libopencv-dev:armhf/bullseye 4.5.1+dfsg-5 uptodate
- Operating System / Platform => Raspbian GNU/Linux 11 (bullseye)
- Compiler =>  gcc (Raspbian 10.2.1-6+rpi1) 10.2.1 20210110

##### Detailed description

libopencv-dev appears to be installed in the wrong location: /usr/include/opencv4/opencv2
I think it is supposed to be in /usr/include/opencv4/
or /usr/include/opencv2

I am trying to build a package, goestools, that uses opencv. This package is a tool for decoding weather satellite images.  When you correct the incorrect path in the goestools package than the opencv files error out as it appears that opencv is expecting it's include files to be somewhere else, for example: #include "opencv2/core.hpp".  For THIS installation if I am not mistaken the #include should read: #include "opencv4/opencv2/core.hpp".  For some reason it appears that apt install is putting the library in the wrong place.
##### Steps to reproduce
Install opencv:
sudo apt install libopencv-dev


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