histogram equalization transformation function

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pandu hanifa
pandu hanifa 2018-12-8
评论： CANDY 2022-10-4
Suppose that a given 3-bit image(L=8) of size 64*64 pixels (M*N=4096) has the intensity distribution shown as below. How to obtain histogram equalization transformation function and then compute the equalized histogram of the image?
Rk nk
0 800
1 520
2 970
3 660
4 330
5 450
6 260
7 106
  2 个评论
Saiteja B
Saiteja B 2019-11-22
Did u get the code for histeq without matlab tool or code for your mentioned problem,if yes please post here? Thank u.!!
CANDY
CANDY 2022-10-4
hi dear were you able to get the answer to this work ?
if yes , can you show me the codes ?

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回答（1 个）

Image Analyst
Image Analyst 2018-12-9
Call histeq() followed by imhist().
  2 个评论
pandu hanifa
pandu hanifa 2018-12-9
编辑：pandu hanifa 2018-12-9
if equation i know how to finish it,, i want to know the code( without in-built function matlab), and if its c++ i aldy try and can,, but in matlab the code i write keep eror idk why
rk nk c sk = c/MN (L-1)sk rounded value
0 800 800 0.195 1.365 1
1 520 1320 0.322 2.254 2
2 970 2290 0.559 3.913 4
3 660 2950 0.720 5.04 5
4 330 3280 0.801 5.601 6
5 450 3730 0.911 6.377 6
6 260 3990 0.974 6.818 7
7 106 4096 1.000 7.0 7
Image Analyst
Image Analyst 2018-12-9
Why without built-in functions???
Why would you want to compute the histogram, then the cdf, then invert it, and use intlut() when you can just do it in one line of code?

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