Mercurial > hg > smallbox

diff util/ksvd utils/imnormalize.m @ 70:c3eca463202d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
(none)
author idamnjanovic
date Wed, 16 Mar 2011 14:16:57 +0000
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/ksvd utils/imnormalize.m	Wed Mar 16 14:16:57 2011 +0000
@@ -0,0 +1,19 @@
+function y = imnormalize(x)
+%IMNORMALIZE Normalize image values.
+%  Y = IMNORMALIZE(X) linearly transforms the intensity values of the image
+%  X to tightly cover the range [0,1]. If X has more than one channel, the
+%  channels are handled as one and normalized using the same transform.
+
+
+%  Ron Rubinstein
+%  Computer Science Department
+%  Technion, Haifa 32000 Israel
+%  ronrubin@cs
+%
+%  May 2004
+
+
+maxval = max(x(:));
+minval = min(x(:));
+
+y = (x-minval) / (maxval-minval);