Added disparity filtering to remove NaN to transformFromVirtual()

src/main/java/com/elphel/imagej/cuas/Cuas.java

@@ -1339,6 +1339,33 @@ public class Cuas {
 		int initial_capacity = 4;
 		final int min_samples = 1;
 		
+		// fill NaN in disparity_ref (not needed for planes)
+		boolean had_nans = false;
+		for (int i = 0; i < disparity_ref.length; i++) {
+			if (Double.isNaN(disparity_ref[i])) {
+				had_nans=true;
+				break;
+			}
+		}
+		if (had_nans) {
+			int grow_width = Math.max(tilesX, tilesY);
+			int       num_passes = 20;
+
+			System.out.println("transformFromVirtual(): disparity_ref had NaN, filling them from surrounding.");
+			double [] disparity_ref1 = TileProcessor.fillNaNs(
+					disparity_ref,  // final double [] data,
+					null,            // final boolean [] prohibit,
+					tilesX,       // int       width,
+					2 * grow_width,  // 100, // 2*width, // 16,           // final int grow,
+					0.7,             // double    diagonal_weight, // relative to ortho
+					num_passes,      // int       num_passes,
+					0.03);           // final double     max_rchange, //  = 0.01 - does not need to be accurate
+			System.arraycopy(disparity_ref1, 0, disparity_ref, 0, disparity_ref.length);
+		}
+		
+		
+		
+		
 		final String debugTitle=debug?reference_QuadClt.getImageName()+"-"+debugSuffix : null;
 		String [] debug_frame_titles = {"X", "Y", "D"};
 		String [] debug_titles = new String[num_refines+1];