color-problem with imread and image

6 vues (au cours des 30 derniers jours)
Merijn Vangilbergen
Merijn Vangilbergen le 13 Août 2017
Commenté : Image Analyst le 7 Mai 2022
I'm working on a mirror anamorphosis by a cilindrical mirror. I'm having a problem with using colors. The problem can be reduced to this simple script:
picture = imread('pict.jpg')
image(picture)
This is the picture that I want to get:
This is the picture that I do get:
Does anyone know what went wrong? Many thanks.
  5 commentaires
Omer Al Sumeri
Omer Al Sumeri le 5 Mai 2022
The answer is unclear to me, Can someone clarify?
Image Analyst
Image Analyst le 7 Mai 2022
@Omer Al Sumeri, sure. Just start a new thread and attach your indexed image file. There, show us a screenshot of what you're getting when you use my answer from below
[indexedImage, cmap] = imread('Charizard.jpg.png');
imshow(indexedImage, cmap);

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Réponse acceptée

Image Analyst
Image Analyst le 13 Août 2017
It's an indexed image. Get the second output of imread(), which you are not asking for now. It will be the color map. Then apply it with the colornap() function.
  2 commentaires
Image Analyst
Image Analyst le 14 Août 2017
[indexedImage, cmap] = imread('Charizard.jpg.png');
imshow(indexedImage, cmap);
Image Analyst
Image Analyst le 15 Août 2017
Glad this fixed it for you. If you're done, you can "Accept" the answer.

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