Question

I working on Optical Character Recognition system.

I want to convert the license plate image from binary to gray scale.

let’s look at the next example:

this is the binary image:

and this is the gray scale:

what I want to know is if there is a way to convert it from binary to the gray, or this is not possible because i’ve lost the information when I converted the picture to binary at the beginning.

any idea how to do this? thanks

Answer 1

To convert a binary image of class logical to a grayscale image of class double, you simply call

double(yourBinaryImage)

EDIT

To revert from a binary image to the grayscale image you had before thresholding is impossible without the grayscale image, since by thresholding you have dropped all the grayscale texture information.