Grayscale to Matrix conversion

Hi everybody,

is there a way to convert a grayscale map to a matrix? i'm able to realize the opposite operation but i've no idea on how to do this.

Thanks

[Image Analyst]

What do you mean by "map"? Do you mean image, or do you mean lieterally a map, like a photo of a road map or something? What are you starting with? A grayscale image? Well that is already a matrix so there's nothing to do.

Answer 1

[Walter Roberson]

You can convert it to a grayscale truecolor matrix by using

RGB = cat(3,Grey,Grey,Grey);

If you are hoping to go from a grayscale matrix to a full-color matrix, then you cannot do that without additional information. A particular grayscale value is a projection from a whole ellipsoid of RGB color combinations.

Answer 2

[Fabio]

Thank for the answer but i probably didn't explain my problem. I just wanted to get a matrix of data from the image. I solved the problem with the 'getimage' function. Now i have one other problem.. in my figure i've several axes and i want to select just some of them according to their title. i can get axes handles with

 findobj(figureHandles,'type','axes');

or

 findobj(figureHandles,'children');

but this way i get all the handles. I just want some of them (those with the right title). Is there a way?

Answer 3

[Dakshayani Virodhi]

As i'm working on matlab and i'm new to this...so please can u post the code for greyscale to matrix conversion....