Truncate my image intensity values in the range [-100 400]

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Emerson Nithiyaraj
Emerson Nithiyaraj 2019-9-10
评论： Emerson Nithiyaraj 2019-9-10
Hello,
I have a medical raw CT 'NIFTI' image file of type double where the values of the image are in the range from -2000 to 2004. The values are the Hounsfield units (HU). The image looks like below.
dd.jpg
Now as mentioned in a paper "No special pre-processing was performed except that we truncated the image intensity values of all scans to the range of [-200; 200] HU to ignore irrelevant image details". When i load this image file in an online NIFTI file viewer i could adjust the values and the same image looks like below.
ssss.jpg
But in matlab i want to truncate my image values between -100 and 400 to get a image as dislpayed above. How can i do that?

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Walter Roberson
Walter Roberson 2019-9-10
TruncatedImage = max( min(YourImage, 400), -100 );
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Walter Roberson
Walter Roberson 2019-9-10
How are you viewing it? Are you using imagesc()? Are you using imshow() with a second parameter of [] ?

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