Histogram Specification

David Doria — Sat, 04 Oct 2008 17:14:02 -0400

In the doc for histeq(), it says you can specify a histogram with

histeq(Original, hist);

My question is, can you use the result of imhist() as this hist specification? It seems there are two outputs to imhist, [counts, x]. If you pass 'counts' as 'hist' to histeq(), it seems that it wont know about the position of the bins, as they are given in 'x'.

What I'm trying to do is turn the histogram of image A into that of image B, rather than specifying a function (bimodal, etc) explicitly for the "histogram specification".

Thanks!
Dave

Re: Histogram Specification

Mengxin SONG — Thu, 16 Oct 2008 15:02:01 -0400

"David Doria" <daviddoria@gmail.com> wrote in message <gc888q$fuk$1@fred.mathworks.com>...
> In the doc for histeq(), it says you can specify a histogram with
>
> histeq(Original, hist);
>
> My question is, can you use the result of imhist() as this hist specification? It seems there are two outputs to imhist, [counts, x]. If you pass 'counts' as 'hist' to histeq(), it seems that it wont know about the position of the bins, as they are given in 'x'.
>
> What I'm trying to do is turn the histogram of image A into that of image B, rather than specifying a function (bimodal, etc) explicitly for the "histogram specification".
>
> Thanks!
> Dave

hello Deve:
I have the same question.I tried to pass the result of imhist(I) to the histeq(I,hgram),because I found the result of imhist(I) is a vetor,which is needed by the parameter hgram.
But I don't know whether it's right

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Histogram Specification

Re: Histogram Specification