imshow displays black instead of transparent background of png image
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Denis Perotto
il 7 Feb 2024
Commentato: Joshua
il 22 Mar 2024
I need to display a .png image that has transparent background in a figure. I also need to change the transparency of its solid part. I tried to do it using imshow like this:
figure
hold on
plot([1 2], [1 2])
axes("pos",[.1 .1 .1 .1])
foo = imshow("some_image.png");
foo.AlphaData = 0.8;
The problem is that the transparent background of my .png becomes solid black on figure. How to fix it?
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Walter Roberson
il 7 Feb 2024
figure
hold on
plot([1 2], [1 2])
axes("pos",[.1 .1 .1 .1])
[myimage, cmap, alpha] = imread("some_image.png");
foo = imshow(myimage, cmap);
foo.AlphaData = alpha;
2 Commenti
Joshua
il 22 Mar 2024
I would like to thank you for all of your responses throughout the years. I am new to MATLAB, but not new to coding, and you have made learning this language exponentially easier with your consistent, accurate tips. Your comment here is just +1 to the massive amount of times you have helped me in my project. Take care!
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