I need Help in Digital Image Processing - Specifically Histogram Equlaization

[Qwme5]

I am working Currently on project that require me to do the following

1)obtain the histogram of an image X 2)play on that histogram and obtain a new one lets say Y

My problem is how can i apply this new histogram to the original image

I'm using the function histeq(I,Map) but my Advisor want me to not use.Which mean i need to build my own function

plz any help even if you can mention the algorithms i will be thankful

Regards

 

[emresel]

Hi;
I think you need some readings on it.
Have a check this https://people.scs.carleton.ca/~mould/papers/histeq.pdf, there are pseudo codes also in it.

Good luck

 

[iVenky]

Histogram equalization is used to improve the contrast of an image. The algorithm is very easy. In a normal image you have greater amount of detail in some end of the gray scale. In other words if you see the histogram of a normal image all the pixels will be near some gray scale value. (Histogram is nothing but the graph plotting number of pixels vs gray scale value). In histogram equalization you divide the pixels equally between all gray scale values. If you see the histogram of the new image (after histeq) you can clearly see that the pixels are distributed equally throughout.

That's all.

Hope this helps.