How to write image

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Ajay kumar 2017-10-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/361668-how-to-write-image

评论： Ajay kumar 2017-10-20

sim =reshape(sim,row,col,3);
gim =reshape(gim,row,col);
figure,
subplot(2,2,2),imshow(gim,[]),title('titl');
subplot(2,2,3),imshow(sim,[]),title('titl');

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Guillaume 2017-10-17

This snippet of code does not write any image to a file. It displays some images on screen.

From the conversation below, it's not clear if the question is about displaying images or saving them into a file. So, please clarify. A good question has words that clearly explain the problem, not just a title and a few lines of code.

In any case, for us to be able to help we need to know how the image is created (or loaded from file). What format it has (grayscale, rgb, indexed), what class (uint8, double, ...) and what range of intensities (0-1, 0-255, ...)

Ajay kumar 2017-10-19

From this code I wanted to save into file .

From the script

gim =reshape(gim,row,col);

displays M*N double with intensity 0-255 Can you help in imwrite to gim

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回答（2 个）

KSSV 2017-10-17

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/361668-how-to-write-image#answer_286135

doc imwrite https://in.mathworks.com/help/matlab/ref/imwrite.html

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Ajay kumar 2017-10-17

编辑：Ajay kumar 2017-10-17

This is the image what i got

Ajay kumar 2017-10-17

Sorry the image is complete white so its not visual

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Guillaume 2017-10-19

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/361668-how-to-write-image#answer_286605

在 MATLAB Online 中打开

images of class double in matlab are assumed to have intensity range 0-1, with 0 == black, 1 == white.You get a white image because anything above 1 is the same as 1 == white. If your image is in the range 0-255 then its class should be uint8. So:

imwrite(uint8(gim), 'somename.png');