I have a simple piece of code that uses openCV, and I want to run it on an ARM development board (freescale MX) that does not have a screen attached to it. I tried for several days to run the code on this remote device and display its graphical output on my local machine, without getting any luck ...
My setup:
- Ubuntu 10.04 on my local machine
- Linux 2.6 runs on the board, with all the relevant packages I could think of.
- Ethernet connection to the local machine
- openCV compiled statically with GTK enabled
- using GDB / GDBServer for debugging using SSH
and everything works fine, only for openCV HIGHGUI display functions that are not affected.
Some notes:
- I can install DISPLAY env var to point to my local machine, and I get gtk-demo / xterm / whatever-is-use-X will appear on my local machine, even when working with the same SSH session that I use to run and debugging my code.
- I try not to get into GTK / QT and fix / prepare my own display shell. I got the feeling that I just needed a little modification of the GTK / HIGHGUI configuration to make this work ...
My code (which compiles and works fine, take it for lack of graphical output):
cv::Mat im = cv::imread("/root/capture.jpg"); //im is valid and not empty at this point cvNamedWindow( "test" ); cv::imshow( "test", im); cvWaitKey(); cvDestroyWindow( "test" );
Can anyone help?
thanks
Update:
solvable
When reading the post I just posted, I found out that I actually used getchar () instead of cvWaitKey (), which seems important ...
source share