How to convert an array to an image?

2018 3 4
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更新时间：2019 12 28
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I have a 1*784 matrix, I need to convert it to a 28*28 image, can anyone please tell me how to do it?I used reshage, imagesc for this, but the picture doesn't seem right, any suggestions would be a great help. I'm attaching a file which contains X_train which contains pixels of 12,000 images as row vectors, I'm supposed to study the 12,000th image, it is a 9, but I'm getting some weird shape.
Thank You

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Walter Roberson
Walter Roberson 2018-3-4

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images = permute(reshape(uint8(X_train),12000,28,28),[3 2 1]);
image(images(:,:,12000)); colormap(gray(256));

更多回答（2 个）

Fatih Sandayuk
Fatih Sandayuk 2019-12-28

0 个投票

hello!
how did you studied the 12 000th picture? I have the same Problem, but matlab says taht unit 8 is not defined.
THANK YOU!

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