flip images for consistent display

processing/makeMRCthumbnails.py

@@ -75,7 +75,7 @@ for slice in outputSlices:
     yOutSize = int(xOutSize/image.shape[0]*image.shape[1])
     
     # flip horizontally
-    cv2.flip(image,image,+1)
+    cv2.flip(image,image,1)
     image = cv2.GaussianBlur(image, (9,9),4)
     image = cv2.normalize(image, None, 0, 255,cv2.NORM_MINMAX)
     image = cv2.resize(image, (xOutSize, yOutSize))