How to use imwrite to save imshow(image01, [ ]) as a PNG file ?

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Sandy Winardi 2020-10-11

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https://ww2.mathworks.cn/matlabcentral/answers/610371-how-to-use-imwrite-to-save-imshow-image01-as-a-png-file

评论： Image Analyst 2020-10-11

So, I have an image file: image01.

When I use imshow to show the image, it will look different when I use limit: imshow(image01, [ ]).

When I use imwrite to write the image into a png file: imwrite(image01, "image01.png", "png"), the png file saved is the one when I dont use limit: imshow(image01).

I want to write the image shown when I use " imshow(image01, [ ]) "

Is it possible to do that using imwrite ? or do I have to use other method ?

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回答（1 个）

Ameer Hamza 2020-10-11

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https://ww2.mathworks.cn/matlabcentral/answers/610371-how-to-use-imwrite-to-save-imshow-image01-as-a-png-file#answer_510611

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First rescale the image before saving it

img_new = rescale(image01, 0, 1);
imwrite(img_new, "image01.png", "png")

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Ameer Hamza 2020-10-11

I am glad to be of help!!!

Image Analyst 2020-10-11

Sandy, please "Accept this answer" to thank/award Ameer reputation points for helping you.

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