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Update cv_opencvdemo.xml (#3272)

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Christophe De Wagter
2024-05-21 15:21:12 +02:00
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parent e9b81bb885
commit f0607badaf
1 changed files with 44 additions and 3 deletions
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conf/modules/cv_opencvdemo.xml
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@@ -2,10 +2,51 @@
<module name="cv_opencvdemo" dir="computer_vision">
<doc>
<description>This example shows how opencv can be used on (for example) the Bebop drone.
Important to know is that sw/ext/opencv_bebop must be downloaded, and made.
After this is done the folder sw/ext/opencv_bebop/install has a opencv.xml file.
<description>This example shows how OpenCV can be used on (for example) the Bebop drone.
Important to know is that sw/ext/opencv_bebop must be downloaded, and compiled.
After this is done the folder sw/ext/opencv_bebop/install has an opencv.xml file.
The LDFLAGS in this file should be the same as in this conf file.
// Install OpenCV:
WARNING! During simulation, a native version of OpenCV is needed, while for AP you need a cross-compiled version included in ./sw/ext/opencv_bebop.
The following instructions are for the AP (ARM) version:
1) For OpenCV on the bebop, make sure to use Ubuntu 20.4: This solution was only tested for this version of Ubuntu.
In NPS, newer versions of OpenCV also work. Then do not follow the instructions below but install (sudo apt-get install) corresponding opencv-dev packages instead, and then skip to step 7)
2) Navigate to paparazzi/sw/ext/opencv_bebop:
cd ~/paparazzi/sw/ext/opencv_bebop
3) Install the required OpenCV Libraries:
sudo apt install libjpeg-turbo8-dev libpng-dev libtiff-dev zlib1g-dev libdc1394-22-dev
4) Do make (inside the current directory):
make
5) Then go to the build files for the drone : (will configure the files for OpenCV on the drone)
command: cd /home/username/paparazzi/sw/ext/opencv_bebop/install_arm
command: make install
6) Then go to the build files for the computer: (will configure the files for OpenCV on your on computer)
command: cd /home/username/paparazzi/sw/ext/opencv_bebop/install_pc
command: make install
7) finally update the paths in this module file (XML file) for your drone (AP) and for your computer (NPS):
For the Bebop, check the paths are: $(PAPARAZZI_SRC)/sw/ext/opencv_bebop/install_arm/include and lib.
Example for NPS, if you followed the steps 2 to 6 above, your opencv will normally be in $(PAPARAZZI_SRC)/sw/ext/opencv_bebop/install_pc/include
But if you did: sudo apt-get install of opencv-dev, then you will need to update all paths to where opencv-dev is on your machine: /usr/bin/...
8) USEFUL BACKGROUND INFORMATION
OpenCv only works on C++ code, therefore you need to use a special trick to call a C++ function from C:
#ifdef __cplusplus
extern "C" {
#endif
</description>
<define name="OPENCVDEMO_CAMERA" value="front_camera|bottom_camera" description="Video device to use"/>