DICOM Image Color Values

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Lydia Lee
Lydia Lee 2020-10-14
回答： Jemima Pulipati 2020-10-20
I am relatively new to Matlab, and I am working with a dicom image. It is all in grayscale. The values on the image currently to all the way up into the 2000s (when I look at the colors in imtool). My questions are how do I switch the image to either a 0-1 color scale, or a 0-255 color scale. My second questions is, how do I figure out if the image is in HSV or RGB format currently?
Thank you.

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回答（1 个）

Jemima Pulipati
Jemima Pulipati 2020-10-20
From my understanding, you want to convert your image to an image having its values in the range [0,1] or [0,255].
The mat2gray function is used to convert a matrix into a grayscale image whose values are in the range [0,1].
The following answer from the community may help you to convert the image values to the range [0,255].
https://www.mathworks.com/matlabcentral/answers/317237-how-to-convert-0-60-scale-to-0-255-scale-in-image
NOTE: You can also use the imadjust function to adjust the image intensity values or colormap.
The following link addresses the second part of your question regarding how to identify the image format.
https://www.mathworks.com/matlabcentral/answers/77666-how-to-know-the-present-colormap-eg-hsv-rgb-etc

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