improving fitting

src/main/java/com/elphel/imagej/gpu/GpuQuad.java

@@ -4509,8 +4509,8 @@ public class GpuQuad{ // quad camera description
 					double [][] cxy = new double [2][2]; // image number, {x,y}
 					int [][] icxy = new int [2][2];
 					for (int nTile = ai.getAndIncrement(); nTile < tiles; nTile = ai.getAndIncrement()) {
-						int tileY = nTile / tiles_woi.width + tiles_woi.x;
-						int tileX = nTile % tiles_woi.width + tiles_woi.y;
+						int tileY = nTile / tiles_woi.width + tiles_woi.y;
+						int tileX = nTile % tiles_woi.width + tiles_woi.x;
 						double [] cxy0 = {
 								(tileX + 0.5) * GPUTileProcessor.DTT_SIZE,
 								(tileY + 0.5) * GPUTileProcessor.DTT_SIZE};

src/main/java/com/elphel/imagej/orthomosaic/FloatImageData.java

 package com.elphel.imagej.orthomosaic;
 
+import java.awt.Rectangle;
+import java.util.Arrays;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import com.elphel.imagej.common.PolynomialApproximation;
+import com.elphel.imagej.tileprocessor.ImageDtt;
+
 public class FloatImageData {
 	public int       width;
 	public int       height;
@@ -66,12 +73,12 @@ public class FloatImageData {
 				ze = 2.0 * pix_size_in_cm;
 			}
 		} else { // high resolution, pixel size < 1 
-			zl--;
+//			zl--;
 			while (pix_size_in_cm <= (1.0-e)) {
 				zl++;		
 				pix_size_in_cm *= 2;
 			}// exits with (2-2*e) >= pix_in_cm > (1-e)
-			vz = pix_size_in_cm > (2.0 - e);
+			vz = pix_size_in_cm < (1.0 + e);
 			if (!vz) {
 				ze = pix_size_in_cm;
 			}
@@ -82,9 +89,9 @@ public class FloatImageData {
 		if (zoom_in_extra != null) {
 			zoom_in_extra[0] = ze;
 		}
-
-
 		return zl;
 	}
 	
+	// processing altitudes to remove non-flat surfaces from fitting ortho maps
+	
 }

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

@@ -3294,7 +3294,7 @@ public class TexturedModel {
 						}
 						double avg_z = sum_z/num_pix;
 						LocalDateTime dt = scenes[ref_index].getLocalDateTime(); 
-						corrected_lla[2] = avg_z; // average altitude. Maybe keep drone altitude?
+//						corrected_lla[2] = avg_z; // average altitude. Maybe keep drone altitude? - yes
 						
 						
 						if (gmap_save_alt) {