Image Processing Toolbox

isgray

Return true for intensity image

Syntax

flag = isgray(A)

Description

flag = isgray(A) returns 1 if A is a grayscale intensity image and 0 otherwise.

isgray uses these criteria to decide if A is an intensity image:

• If A is of class double, all values must be in the range [0,1], and the number of dimensions of A must be 2.
• If A is of class uint16 or uint8, the number of dimensions of A must be 2.

Note    A four-dimensional array that contains multiple intensity images returns 0, not 1.

Class Support

A can be of class uint8, uint16, or double.

See Also

isbw, isind, isrgb

isbw

isind