Changeset 273 for trunk/src/pivlab.m

Timestamp:

Nov 17, 2011, 7:01:18 PM (13 years ago)

Author:

sommeria

Message:

GUI civ renovated with panels

File:

• trunk/src/pivlab.m (modified) (2 diffs)

trunk/src/pivlab.m

@@ -62 +62 @@
 end
 
-%% calculate correlations: MAINLOOP
+%% calculate correlations: MAINLOOP on velocity vectors
 corrmax=0;
 sum_square=1;% default
-for ivec=1:nbvec
+for ivec=1:nbvec 
     iref=GridIndices(ivec,1);
     jref=GridIndices(ivec,2);
@@ -82 +82 @@
         end
     end
-    if ~test0
-        image1_crop=image1(jref-iby2:jref+iby2,iref-ibx2:iref+ibx2);
-        image2_crop=image2(jref+shifty-isy2:jref+shifty+isy2,iref+shiftx-isx2:iref+shiftx+isx2);
-        image1_crop=image1_crop-mean(mean(image1_crop));
+    if ~test0    
+        image1_crop=image1(jref-iby2:jref+iby2,iref-ibx2:iref+ibx2);%extract a subimage (correlation box) from images 1  
+        image2_crop=image2(jref+shifty-isy2:jref+shifty+isy2,iref+shiftx-isx2:iref+shiftx+isx2);%extract a larger subimage (search box) from image 2
+        image1_crop=image1_crop-mean(mean(image1_crop));%substract the mean
         image2_crop=image2_crop-mean(mean(image2_crop));
         %reference: Oliver Pust, PIV: Direct Cross-Correlation