Why the image color bar doesn't contain certain color (Red, in particular)

4 views (last 30 days)
I used the following code in order to explore RGB images
X = imread ('parrot.jpg');
The output
Why doesn't the color bar contain red color even when the image does?

Accepted Answer

Image Analyst
Image Analyst on 22 Aug 2020
If you want to see the 3-D color gamut, you can use colorcloud

More Answers (1)

Walter Roberson
Walter Roberson on 21 Aug 2020
Edited: Walter Roberson on 22 Aug 2020
image() never changes the active colormap. (imshow() on the other hand changes the colormap for 2d arrays but not for rgb arrays.) You were displaying an rgb image so it had no need for a colormap.
colorbar never analyzes the contents of the display. colorbar only ever puts up a copy of the current colormap and associated numeric scale. In this case the default parula map was displayed.
Image Analyst has a better analysis tool but I cannot find it at the moment.




Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!