How to crop video using ROI

Hello,
Would some one please help me?
I have a loop which continuously aquire images from a camera and saves it to a video . I would like to crop a region of this video by passing the co-ordinates of a rectangle.After I have the cropped video, I would like to do a intensity profile of the whole video and display it using a single graph ( intesnity changes for diffferent frames in the y axis and the the number of the frame in x - axis.
Joyce Joy

Hi,
You can implement image cropping following the example:
https://decibel.ni.com/content/docs/DOC-11222
You would have to programmatically generate the ROI rectangle if you do not wish to have user interaction in the code.
I am not quite sure what kind of intensity profile you want, but here is a good example that performs it along a line, so you could just build an array of those and plot it.
https://decibel.ni.com/content/docs/DOC-20840
Hope this helps!
Applications Engineer
National Instruments UK & Ireland

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