Three-dimensional super-resolution range-gated imaging has been developed for high-resolution 3D remote sensing with two range-intensity correlation algorithms under specific shapes of range-intensity profiles (RIP). However, pulsed lasers have a minimum pulse width which limits range resolution improvement. Here a spatial difference shaping method is proposed to break the resolution limitation. This method establishes a shaping filter, and the pre-reshaping gate images are reshaped by spatial difference and yield new gate images with the laser pulse width equivalently narrowed as half value which improves the range resolution. Furthermore, the boundary blurring caused by non-rectangular laser pulses are also eliminated.
High-resolution real-time three-dimensional imaging is important in 3D video surveillance, robot vision, and
automatic navigation. In this paper, a three-dimensional superresolution range-gated imaging based on inter-frame
correlation is proposed to realize high-resolution real-time 3D imaging. In this method, a CCD/CMOS with a gated
image intensifier is used as image sensor, and depth information collapsed in 2D images is reconstructed by
spatial-temporal inter-frame correlation with a resolution of about 1000×1000 full-frame pixels within a frame.
Furthermore, under inter-frame correlation a 3D point cloud frame is generated at video rates corresponding to
CCD/CMOS utilized. Finally, some proof simulation experiments are demonstrated.