how to find central pixel

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prem preet
prem preet 2011-10-29
评论： Walter Roberson 2018-1-8
how to find central pixel of red component of coloured image....
plss reply fast
  1 个评论
Image Analyst
Image Analyst 2011-10-29
Describe what you mean. What does central mean? Is it the pixel at the center of the image, like the pixel at (256,256) of an image 511x511 in size? Or does it mean the average value of the intensities, or the median value. "Central" is very ambigous.

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回答（2 个）

jagkaran
jagkaran 2011-10-29
central pixel can be found out by using the line ... med_red (i,j)= median (a2); and same for the other colour component ...
abe tu main baat puch salle ...
Walter Roberson
Walter Roberson 2018-1-8
mean_color = [mean2(YourImage(:,:,1)), mean2(YourImage(:,:,2)), mean2(YourImage(:,:,3))];
  2 个评论
Rashmi.D Jeya kumar
Rashmi.D Jeya kumar 2018-1-8
will it give center pixel intensity.why taking mean 3 times of a image in above formula sir?
Walter Roberson
Walter Roberson 2018-1-8
If you define "center pixel intensity" as being the mean red, green, and blue intensity, then one of the approaches is to take the mean of each color plane individually.
If you were looking for "average brightness" then you would take a different approach.

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