HISTEQ default not consistent with syntax?

1 次查看（过去 30 天）
Jurgen
Jurgen 2012-11-15
If I have an 8-bit image IM (e.g. cameraman.tif), why does histeq(IM) produce a different result than histeq(IM,ones(1,256))??
Shouldn't they be identical? The description says hgram defaults to ones(1,n)*prod(size(A))/n. Since cameraman is 256x256 and n=2^8, shouldn't it scale normally?

请先登录，再回答此问题。

采纳的回答

Matt Fig
Matt Fig 2012-11-15
IM = imread('cameraman.tif');
I = histeq(IM);
I2 = histeq(IM,ones(1,64)*(numel(IM)/64));
isequal(I,I2)
ans =
1
  1 个评论
Jurgen
Jurgen 2012-11-15
I see it uses n=64 then, I was testing with n=256. Because of the description I was under the impression that n=length(HGRAM). Thanks for clearing that up.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Filtering and Enhancement 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by