Can anyone please help with a question in relation with RGB image ?

I've been struggling with this question and I don't how to solve it I need to modify the image to reveal a band of height H at the top, whose color corresponds to the average color on this same band on the original image . Any ideas?

[OCDER]

Seems like a class hw or test question. What codes do you have so far? Is the question confusing, or would you like hints about what matlab functions to use?

[Sofia Moussaid]

The question is confusing. It's a practice exercice.

Answer 1

[OCDER]

I can try to interpret that in the context of matlab:

1. Open the image using imread. Should get a MxNx3 matrix.
      Im = imread('your_image_file_name.jpg')
2. Modify the top H rows of the image accordingly
   -use "mean" to get the average R, G, B values of the top H rows of the image
      mean(mean(Im(xrange, yrange, zrange), 1), 2)
   -replace all the pixels in the top H rows with the average values for R, G, and B
      the red   channel should be the mean of all red   in the top H rows
      the green channel should be the mean of all green in the top H rows
      the blue  channel should be the mean of all blue  in the top H rows
3. Your resulting image should have a band at the top of average RGB values