opencv - How can I separate color pixels that are not common for two images? -

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here's do:

i have image of rice leaf. have image of rice leaf got brown color spots on leaf. want separate color pixels not common 2 images using opencv.(color of spots can vary)

i tried using histogram intersection. managed find number of pixels common between 2 images.

is there way using opencv? please me kind enough me.

if 2 images match perfectly

  • if match use rhinodevel approach:
  • so loop through pixels of first image
  • and compare each pixel corresponding pixel second image
  • if difference higher treshold
  • you found not matching pixel , need do
  • like add pixel output map or recolor (brown) pixel color first image or whatever

if 2 images not match

  • so got reference leaf image , processed image can have position/rotation skew
  • create list of colors per each image
  • sort them ascending color
  • cross compare booth lists
  • if color in list2 not in list1
  • then recolor/copy pixels contains such color in/from image2
  • this approach slower o(xs*ys*n)
  • xs,ys image 2 resolution , n number of non common colors

[notes]

  • rgb fine may got better result on hsv color space
  • in hsv can compare 3 parameters or few of them ignoring v value...

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