Xinwei Wang, Youfu Li, Yan Zhou
Appl Opt. 2013 Oct 20;52(30):7399-406. doi: 10.1364/AO.52.007399.
We present a triangular-range-intensity profile (RIP) spatial-correlation method for 3D range-gated imaging with a depth of super resolution. In this method, spatial sampling volumes with triangular-RIPs are established by matching laser-pulse width and sensor gate time, and then depth information collapsed in gate images can be reconstructed by spatial correlation of overlapped gate images corresponding to sampling volumes. Compared with super-resolution depth mapping under trapezoidal-RIPs, range accuracy and precision are improved, and a large range fluctuation due to noise disturbance is smoothed by noise suppression under triangular-RIPs. In this paper, a proof experiment is demonstrated with a range precision 2.5 times better than that obtained under trapezoidal-RIPs.
我们提出了一种用于具有超分辨率深度的三维距离选通成像的三角范围强度剖面（RIP）空间相关方法。在该方法中，通过匹配激光脉冲宽度和传感器选通时间来建立具有三角RIP的空间采样体积，然后通过对应于采样体积的重叠选通图像的空间相关性来重建在选通图像中压缩的深度信息。与梯形RIP下的超分辨率深度映射相比，距离精度和精密度得到了提高，并且在三角RIP下通过噪声抑制平滑了由于噪声干扰引起的大范围波动。在本文中，进行了一个验证实验，其距离精度比梯形RIP下获得的精度高2.5倍。
