cmucam3-hardware (#1) - Frame differencing problem (#193) - Message List

Hi, I am currently working on a project and having a little difficult time with using the frame differencing method. I am trying to use the FD (frame difference) to detect an object that is moving within the camera view. Even though the camera response with the T packet after the command was sent, it does not seem to have the right response. There was only a little different as the object was moving in front of the camera. All I got was the T packet of this format "T 4 4 1 1 8 8 ..." with the value of 4 4 fluctuating just a little bit. I did try to use the LF command to load the frame but it did not really help out. It looks like the return response of the FD command shows only the x and y coordinate pixels of only the first 8x8 grid instead of the whole 88x143 resolution view.

Does anyone has the same problem that I am having? If you have figured out or know how to use the frame differencing (FD) command to detect the movement, please give me some tips and/or ideas on what is needed to be done to get the "correct" result, i.e. having the return response shows the x and y pixel coordinate based on the whole view.

I would really appreciate the help.

Thank you in advance

DK