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How to subtract image < double> from image<uint8>?

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Samidha
Samidha 2013-12-26
关闭： Matt J 2013-12-26
Hello, I have one CT image. and I have written code as-
I=imread('E:\ME IInd year\data base\ct data\download.jpg'); I1=imresize(o,[160 160]); a=rgb2gray(I); %original image
%find local max and min of image
p=imregionalmax(a); q=imregionalmin(a);
%max-min average
M=(p+q)/2;
%subtract averaged image from original image
Max=uint8(M); %converted from double to uint8
Z = imsubtract(a,Max); %original CT - averaged CT
in this code imshow(M) shows averaged image but when I convert them to uint8 and write imshow(Max) then gives black screen. so, subtraction result is same as original image this is my problem. Why this is happening?
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Matt J
Matt J 2013-12-26
Please use this toolbar button to put your code in a separate font from your text,
I'll re-open your post when you do.

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