- added function to get background sample from alpha markings

git-svn-id: http://moon:8086/svn/matlab/trunk@146 801c6759-fa7c-4059-a304-17956f83a07c
2020-10-04 16:08:41 +00:00
parent 0fbe711264
commit 9805599b00
6 changed files with 18 additions and 17 deletions
@@ -23,10 +23,17 @@
 ## Author: Jens <jens@orion>
 ## Created: 2020-10-04

-function matte = supermatte (im_rgb, ref_rgb, k_e)
+function [matte, dev, conf] = supermatte (im_rgb, ref_rgb, k_e)

 im_minus_ref = im_rgb - ref_rgb;
 var_im_minus_ref = var(im_minus_ref, 0, 3);
+
+# The base matte
 matte = 1-exp(-k_e*var_im_minus_ref);

+# Deviation from reference color
+dev = vecnorm(im_minus_ref, 2, 3);
+
+# Deviation from gray
+conf =  mean(abs(im_minus_ref), 3);
 endfunction