Converting uint8 array into 32-bit

I have a 1280x960 uint8 array that I would like to convert into uint32. Any suggestions?

Thanks!

Answer 1

[Walter Roberson]

uint32(YourArray)

Are you also wanting to scale the values so that 255 in uint8 becomes a large value in uint32? If so then

 uint32(YourArray) .* uint32(2^24)

[A]

Hm, okay I guess that this doesn't do the operation I thought it would.

I am trying to minic the photo processing software, ImageJ. When I subtract two images (to remove the background from a file with an image), ImageJ gives me the option to "Convert 32-bit float", which emphasizes the contrast so that my resultant image is not completely black. Do you have an idea of how I can achieve this in matlab?

Please let me know if you would like to see some images to better understand what I mean, I can upload them.

[Walter Roberson]

im2double() your original arrays and subtract those. The result will be double precision in the range -1 to +1. You can imagesc() to view, or add 1.0 and divide the result by 2 in order to get a matrix in the range 0 to 1 with 0.5 representing "no difference"

Answer 2

[Thomas]

I'm not sure maybe the type cast command will help

 doc typecast

[Walter Roberson]

typecast would be for the case where several uint8 had to be bundled together to form a single uint32.