mat2gray

SIVP Toolbox

Last update : April, 2006

mat2gray - Convert matrix to grayscale image

Calling Sequence

G = mat2gray(M)

G = mat2gray(M, [mmin, mmax])

Parameters

M: An matrix/image.
[mmin, mmax]:[mmin, mmax] is the values in M that correspond to 0.0 and 1.0 in G. The elements in M which is lower than mmin will be converted to 0.0, and greater than mmax will be converted to 1.0.
G: A double precision matrix/image which data value in the range [0,1].

Description

mat2gray(M,[mmin, mmax]) converts the matrix M to the double precision image. The output matrix contains values in the range [0.0, 1.0]. mmin and mmax are the values in M that correspond to 0.0 and 1.0 in the output image.

When [mmin, mmax] is not specified, minimum and maximum of M are the values in M that correspond to 0.0 and 1.0 in the output image.

Examples


    M = [0:10;0:10];
    I = mat2gray(im);

Authors

Shiqi Yu <shiqi.yu[at]gmail.com>

Availability

The latest version of SIVP can be found at