how to convert a double matrix image to a unit8 matrix ?

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Mariem Harmassi
Mariem Harmassi 2013-3-8
评论： Bruno Aravena Pérez 2022-4-29
Hi everybody :) I have an image ,a matrix with values between -0.0934 and 0 and i want to convert it to unit8 matrix with values between 0 ans 255.

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Azzi Abdelmalek
Azzi Abdelmalek 2013-3-8
编辑：Azzi Abdelmalek 2013-3-8
A=imread('yourimage')
B=uint8(A)
EDIT
d=linspace(min(im(:)),max(im(:)),256)
im1=uint8(arrayfun(@(x) find(abs(d(:)-x)==min(abs(d(:)-x))),im))
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Azzi Abdelmalek
Azzi Abdelmalek 2013-3-8
编辑：Azzi Abdelmalek 2013-3-8
Try this
%If im is your image
d=linspace(min(im(:)),max(im(:)),256)
im1=uint8(arrayfun(@(x) find(abs(d(:)-x)==min(abs(d(:)-x))),im))

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Image Analyst
Image Analyst 2013-3-8
You can use the mat2gray() function:
image8Bit = uint8(255 * mat2gray(floatingPointImage));
It will scale your values to the range 0-255.
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