Rewrote imageShift to be consistent with calibration nets behavior, according to paper
Rewrote imageShift to be consistent with calibration nets behavior, according to paper

FRC900/2016VisionCode,FRC900/2016VisionCode,FRC900/2016VisionCode,FRC900/2016VisionCode,FRC900/2016VisionCode,FRC900/2016VisionCode,FRC900/2016VisionCode