Color image with values from 0 to 1

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turningpoint
turningpoint 2017-3-30
评论： Jan 2017-3-31
I have a color image that is read as a double when I load it to Matlab. When I try to visualize it using imshow all I see is white, since my image has values higher than 1 (max=35.8501 and min=23.4284). Does anyone knows how I can see the image, maintaining the color?
Thanks!

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回答（1 个）

Jan
Jan 2017-3-31
How is your color image defined? Color information is stored either by using doubles in the range [0, 1], or as unsigned integers in the range [0, intmax] for 8 or 16 bits.
I cannot guess what a color for the value 35.8501 might be and cannot suggest a method, which "maintains the color". What color is "35.8501"?
Perhaps a normalization helps:
high = max(Img(:));
low = min(Img(:))
RGB = (Img - low) / (high - low);
  2 个评论
turningpoint
turningpoint 2017-3-31
My image(Ic) is in shades of red. It is read as a double, but the values are not between 0 and 1.
whos Ic
Name Size Bytes Class Attributes
Ic 240x320 614400 double
Jan
Jan 2017-3-31
How did you save the image? How do you know that it is red?

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