Center of mass calculation for X/Y motion vector

src/main/java/com/elphel/imagej/tileprocessor/Correlation2d.java

@@ -452,7 +452,7 @@ public class Correlation2d {
     		    		tcorr[col],
     		    		fat_zero/scale_value);
 
-    		 if (first_col < 0) {// accummulate all channels in first non-null color ( 0 for color, 2 for mono?)
+    		 if (first_col < 0) {// accumulate all channels in first non-null color ( 0 for color, 2 for mono?)
     			 first_col = col; // first non-empty color (2, green) or 0 for color images
     			 for (int n = 0; n < 4; n++) {
     				 for (int i = 0; i < transform_len; i++) {

src/main/java/com/elphel/imagej/tileprocessor/TwoQuadCLT.java

@@ -8297,6 +8297,7 @@ if (debugLevel > -100) return true; // temporarily !
 
 			double [][][] pair_sets =
 					opticalFlow.get_pair(
+							clt_parameters, // CLTParameters  clt_parameters,
 							k_prev,
 							quadCLTs[i],
 							qPrev,