Fixed datatype issue with LDAIR preprocessor

bob/bio/csu/preprocessor/LDAIR.py

@@ -54,7 +54,7 @@ class LDAIR (bob.bio.face.preprocessor.FaceCrop):
   def _numpy_image(self, image):
     """Converts the givne image into a numpy color image in Bob format"""
     np_image = image.asMatrix3D()
-    bob_image = numpy.ndarray((np_image.shape[0], np_image.shape[2], np_image.shape[1]), dtype = numpy.float64)
+    bob_image = numpy.ndarray((np_image.shape[0], np_image.shape[2], np_image.shape[1]), dtype = numpy.uint8)
 
     # iterate over color layers
     for j in range(np_image.shape[0]):