MATLAB Answers

BANI tita

how to display an image from a matrix in matlab?

Asked by BANI tita
on 24 Dec 2012

Hello, I am looking for the matlab function that allows me to transfer a confusion matrix has a picture, thank you




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2 Answers

Answer by Image Analyst
on 24 Dec 2012

Use image(), or imshow() (in the Image Processing Toolbox). If it's a floating point image, you need to use imshow(yourImage, []).


BANI tita
on 24 Dec 2012

thank you for your answer but I'm looking to transform a confusion matrix to an image, and function you my data is just to display an image.

Walter Roberson
on 24 Dec 2012

There is no difference to MATLAB between an "image matrix" and a "data matrix". It is all just data. Use imagesc(YourMatrix) or imshow(YourMatrix,[])

BANI tita
on 25 Dec 2012

thank you

Answer by Maurizio De Pitta' on 25 Dec 2012

will solve your issue.



  1 Comment

Image Analyst
on 25 Dec 2012

By default, imagesc applies some weird colormap that's almost never what you want. Then you have to apply the correct colormap, like gray or whatever. That's why I avoid it and use imshow instead, which applies no colormap - it's just the normal gray scale colormap for a gray scale image.

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