fixing slice titles

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

@@ -6455,7 +6455,11 @@ public class OpticalFlow {
 	        									String [] scene_titles = new String [num_scenes];
 	        									for (int nscene = 0; nscene < fpixels.length; nscene++) {
 	        										fpixels[nscene] = (float[]) imp_targets.getStack().getPixels(nscene+first_corr+1);
-	        										scene_titles[nscene] = imp_targets.getStack().getSliceLabel(nscene+first_corr+1);
+	        										String s = imp_targets.getStack().getSliceLabel(nscene+first_corr+1);
+	        										if (s.indexOf("-0") >=0) {
+	        											s=s.substring(0, s.indexOf("-0"));
+	        										}
+	        										scene_titles[nscene] = s;// imp_targets.getStack().getSliceLabel(nscene+first_corr+1);
 	        									}
 	        									master_CLT.processMovingTargets(
 	        											clt_parameters, // CLTParameters         clt_parameters,