isgray (Image Processing Toolbox User's Guide)

Return true for intensity image

Note This function is obsolete and may be removed in future versions.

Syntax

Description

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

isgray uses these criteria to decide whether 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

The input image A can be of class logical, uint8, uint16, or double.

See Also

isbw, isind, isrgb

isflat isicc