Update NUM.m

datngo93 · Sep 4, 2021 · b8912a0 · b8912a0
1 parent d5cd536
commit b8912a0
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/source-code/NUM.m b/source-code/NUM.m
@@ -1,5 +1,5 @@
 %%=========================================================================
-% Copyright © 2019, SoC Design Lab., Dong-A University. All Right Reserved.
+% Copyright © 2019, SoC Design Lab., Dong-A University. All Right Reserved.
 %==========================================================================
 % - Date       : 2019/05/21
 % - Author     : Dat Ngo
@@ -60,6 +60,7 @@
 %% Unsharp masking
 hsv = rgb2hsv(imgf);
 x = hsv(:,:,3);
+x = 2*x-1; % convert to the [-1,1] domain
 
 % root signal
 yk = x;