i have double array and i want to rescale it in the range (0,1) and then convert it into jpg.how to do it?

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sb icse 2019년 1월 21일

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https://kr.mathworks.com/matlabcentral/answers/440678-i-have-double-array-and-i-want-to-rescale-it-in-the-range-0-1-and-then-convert-it-into-jpg-how-to

답변: Walter Roberson 2019년 1월 21일

i have double array and i want to rescale it in the range (0,1) and then convert it into jpg .how to do it?

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Answer 1

Walter Roberson 2019년 1월 21일

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https://kr.mathworks.com/matlabcentral/answers/440678-i-have-double-array-and-i-want-to-rescale-it-in-the-range-0-1-and-then-convert-it-into-jpg-how-to#answer_357282

mat2gray() followed by imwrite()

Note: true grayscale jpg are very uncommon in practice, but they have been valid for quite a while. They are not handled by some rather old browers (e.g., don't expect to display them easily in Windows XP time frame.)

In practice nearly all jpeg are RGB images.

Reminder: JPEG is a lossy image format, so if you expect to be able to read back in exactly what you wrote out, then you should use a different image format.