Is there any difference between operation on .dcm and .tiff?

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jack nn 2015-6-19

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回答： Walter Roberson 2015-6-19

hi everybody I want to operate some commands on a .dcm Image. but I've encounter an strange thing. when I convert my .dcm Image to .tiff I receive the result that I expected. but when I use Image=dicomread(Image); Image = uint8(255 * mat2gray(Image));

I couldn't receive the result that I expected.I couldn't understand what happens. where is the problem? please help me.

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Answer 1

Walter Roberson 2015-6-19

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mat2gray() scales the data so that the smallest value in the data maps to 0 and the largest value in the data maps to 1. Are you certain that is what you intend? Perhaps rgb2gray() would be more appropriate?

Note: instead of uint8(255 * ARRAY) you should use im2uint8(ARRAY)