NAME

signature - Methods to Compute a Digital Signature for an Image


SYNOPSIS

SignatureImage( image );


FUNCTION DESCRIPTIONS


SignatureImage

Method SignatureImage computes a digital signature from an image. This signature uniquely identifies the image and is convenient for determining if the colormap of a sequence of images is identical when animating. The digital signature is from RSA Data Security MD5 Digest Algorithm described in Internet draft [MD5], July 1992.

The format of the SignatureImage method is:

SignatureImage ( image );

A description of each parameter follows:

image:

The address of a structure of type Image.