kyungjin:
I am using the VisionDemo that came with the example code for WindRiver and it tracks a red object (Santa Hat

) without any trouble.
Try using that and see if it works for you. All you need to do is create a new project from example code. There is an enum with several colors and luminance values predefined in one of the headers. Going through the example code should tell you what you need to know.
laultima:
It (the demo) is not sending actual video frames anywhere, just analyzing them, but this would tell you if the firmware recognizes and controls the camera properly.
hth
good luck!
Jim