How to create image from a matrix?

Hello, I have an matrix whose dimension is 101x4032 double. Now how can I see the image using imshow function? Please help me.

Answer 1

[Image Analyst]

If m is your double matrix, use

imshow(m, []);

This works for any range of m - it doesn't have to be in the 0-1 range. Though if it already is in the 0-1 range, then you can omit the [] input argument to imshow().

[Boni_Pl]

Sir Can I make this matrix as square matrix such as 500x500?

[Image Analyst]

You can use imresize():

resizedImage = imresize(originalImage, [500, 500]);

though be aware that there will be a different number of pixels in the new matrix and they won't have exactly the same values though they may be close.

Answer 2

[Star Strider]

Try this:

A = randn(101,4032);                            % Create Matrix
B = uint8(A);

figure
imshow(B,[])

There are likely better ways to display your matrix, such as image or imagesc.

[Image Analyst]

Why might those be likely to be better? I never use those instead of imshow().

[Star Strider]

You cannot reshape your matrix into a square matrix.