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matlab help for image

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intan

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hi! i m a beginner for matlab. can somebody tell me how to calculate the number of pixel of an image?
lets say the image have 291x240 uint8 for grayscale image and 648x306x3 uint8.
how about if i only want to count particular region number of pixel? wat can i do?

thanks in advanced
 

You can use 'for' loops for transfering pixels that you want from the region of the orginal image then use numel(array) command to calculate how many pixels that the region consists.

Kind Regards,
ALP
 
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