message: Fix edge_detection.py sample for Python 3
diff: @@ -27,8 +27,8 @@ class CropLayer(object):
  batchSize, numChannels = inputShape[0], inputShape[1]
  height, width = targetShape[2], targetShape[3]
  - self.ystart = (inputShape[2] - targetShape[2]) / 2
  - self.xstart = (inputShape[3] - targetShape[3]) / 2
  + self.ystart = (inputShape[2] - targetShape[2]) // 2
  + self.xstart = (inputShape[3] - targetShape[3]) // 2
  self.yend = self.ystart + height
  self.xend = self.xstart + width
  