Why does gif turn into grayscale when i use the imread or the imshow command?

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anup pandey 2021-9-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1461799-why-does-gif-turn-into-grayscale-when-i-use-the-imread-or-the-imshow-command

编辑： DGM 2022-1-26

I didn't make the animation from mathlab. I downloaded it externally with 6 seconds of animation. Did it ACTUALLY convert my gif into a grayscale or is it just showing in matlab due to some error.

a = imread('gframe.gif');
imshow(a)

Output

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Walter Roberson 2021-9-27

在 MATLAB Online 中打开

[a, cmap] = imread('gframe.tif');
image(a);
colormap(cmap);

Notice that I did not use a variable named colormap as that is the name of the function needed to change the current colormap.

DGM 2022-1-26

编辑：DGM 2022-1-26

This is probably relevant for anyone trying to read multiframe gifs in R2021a or newer:

https://www.mathworks.com/matlabcentral/answers/893347-is-there-a-bug-in-imread-or-imfinfo-with-multiframe-gifs-in-r2021a-b

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