a long horizontal bar to scan an image

Feb 10, 2013 at 1:02am

a long horizontal bar to scan an image

I was wondering how do I go about scanning and extracting values from an image from top to bottom – for example, where physically a long horizontal bar will slowly move down the image ?

I know how to extract pixel data from an image but I can’t seem to figure out how to properly scan (where I could actually see the scanning bar or something like moves top to bottom ) an image that automatically gives me the values.

#66426
Feb 11, 2013 at 10:14pm

lots of ways to do this, easiest might be jit.submatrix.

– Pasted Max Patch, click to expand. –
#239131
Jun 8, 2013 at 12:07am

i think an c# image scanner will help you to retrieve values and pixel, so you don’t need a bar. it will do immediately after a click.

#252030

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