im2double(img) vs double(img)

Hello, What is difference between im2double(img) vs double(img) ? Thanks

Answer 1

[Azzi Abdelmalek]

Try this example, you will see the difference

Im = reshape(uint8(linspace(1,255,25)),[5 5])
out1=double(Im)
out2=im2ddouble(Im)

You can read the help to know exactly what im2double do