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

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

See Also

isbw, isind, isrgb

isflat

isind