How can you brighten certain portions of an image while keeping the other portions with their respective original brightness?
3 visualizaciones (últimos 30 días)
Alexandar el 1 de Jul. de 2022
I am trying to increase the brightness of a brain atlas. I am trying to brighten the areas 17, 18, and 19 to be brighter than the other areas. I was given to problem to work on and the example given to me was: image(55,35) = 17. Then that pixel of (55,35) is the area of 17. But this does not make sense to me because how can you notice the difference in brightness of just one pixel out of the entire image (note that the atla I am working on is 91, 109, 91).
Image Analyst el 1 de Jul. de 2022
I don't know which areas/regions in your image are labeled 17, 18, and 19. Are they certain regions of the brain comprised of thousands of pixels each?
Or are you talking about the intensity values?
Or does the image values somehow represent an area of something else?
It is possible to visually notice a difference of one gray level in an image under ideal conditions but it's very challending. Of course it's easy to get a difference of one gray level - a map of where the difference is more than 1 gray level but you have to define what your reference gray level is or where it comes from.
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