3D histogram problem when deal with int16 image

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crus 2013-6-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/77785-3d-histogram-problem-when-deal-with-int16-image

Hi，everyone I met a strange problem when dealing with a histogram of a 3D image.My purpose is to obtain a histogram of a 3D image.It works well on a standard image,but,occuring problem when applied to another one.following are my images and simple code.

clc; clear;

file1='HFH_001.hdr';

A=analyze75read(file1);

B=A(:);

imhist(B);

>>HFH_001.hdr can be loaded here http://www.kuaipan.cn/home.htm>user_name:616974841@qq.com

password:violence

class(HFH_001.hdr) equals int16,the intensity ranges from 0 to 407.But when applied to the

code,the histogram only have one value:128,I don't know why.Would you help me.

Thanks.