On Wed, Feb 21, 2007 at 07:27:20PM -0800, Wade Pinkston wrote:
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Hello, I need to process some images and count the number of pixes of a
A little background. I want to take pix of leaves against a mat
background. The leaves are then subjected to damage. I'll then take a
duplicate photo. Now what I want to do is subtract out the colors of the
leaf leaving only a two tone image.
I was hoping to find a way to then use ImageMagick or Gimp to count the
pixels of color so I can then get a percent change between the two images.
Does anybody know how to get ether of these two programs to give this type
of information. Actually any software would be help full.
If the image is in an indexed format, you can use identify from the
$ identify -verbose some.gif
155: (238,238,238, 0) #EEEEEE00
244: (245,245,242, 0) #F5F5F200
264: (249,249,249, 0) #F9F9F900
139: (252,252,252, 0) grey99
3885: (255,255,255, 0) white
3197: (235,235,217,255) #EBEBD9FF
This shows that this image has 3,885 white pixels.
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