OpenCV
There is OpenCV port on Embox. It is tested on qemu-system-arm with 'integrator-cp' platform and some STM32F7 boards OpenCV on STM32: STM32F746GDISCOVERY and STM32F769IDISCOVERY.
'Canny' filter example to detect edges (source code is project/opencv/cmds/edges.cpp in Embox) is used by default for all platform. So you should run
edges fruits.png 20
in Embox console if the command is not started automaticaly.
Use project/opencv/arm-qemu template for testing opencv on qemu
- Compile this template (it requires a few minutes as it builds libstdc++ and opencv from source)
make confload-platform/opencv/arm-qemu
make
There is a building trouble command 'make' first time fails. Error message looks like:
-o /home/anton/embox/build/base/obj/embox.o
EMBOX_GCC_LINK=full /home/anton/embox/mk/extbld/arch-embox-gcc /home/anton/embox/mk/extbld/toolchain_test.c -o /home/anton/embox/build/base/obj/toolchain_test
collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core dumped
compilation terminated.
make[4]: *** [mk/extbld/toolchain.mk:77: /home/anton/embox/build/base/obj/toolchain_test] Error 1
make[3]: *** [mk/build.mk:25: build] Error 2
make[2]: *** [mk/load.mk:41: build] Error 2
make[1]: *** [mk/main.mk:30: build] Error 2
make: *** [Makefile:40: all] Error 2
For fixing just call 'make' ones again
make
- Run Embox through auto_qemu script
./scripts/qemu/auto_qemu
- Run
edges fruits.png 20in Embox console If everythings is all right you will see
root@embox:/#edges fruits.png 20
Framebuffer: 640x480 32bpp
Image: 512x480; Threshold=20
root@embox:/#
And also you will see borders in qemu graphic screen
- To play a video file, run
imagecapture sample.aviin Embox console If everythings is all right you will see
root@embox:/#imagecapture sample.avi
[ INFO:0] VIDEOIO: Enabled backends(3, sorted by priority): FFMPEG(1000); CV_IMAGES(990); CV_MJPEG(980)
Video file opened successfully
root@embox:/#
To run video player demo, ffmpeg must be enabled in the build. Go to mods.conf and change:
include third_party.lib.opencv.opencv_with_ffmpeg
include third_party.lib.opencv.all
//include third_party.lib.opencv.opencv_without_ffmpeg
Here you can see how to run OpenCV on STM32