基于双目变焦超分辨率成像的测距方法

Ranging Method Based on Binocular Zoom Super-Resolution Imaging

针对目前双目成像测距系统由于基线距离、成像焦距等硬件限制,难以进一步提高测距精度的问题,提出一种基于双目变焦的超分辨成像测距方法。通过变焦系统进行变焦超分辨率重建,在系统其余硬件条件不变的情况下提高系统的成像分辨率,进而提高双目系统的测距能力,减小双目系统的测距相对误差。实验结果表明:在相同的距离下,双目变焦测距系统具有更小测距相对误差;在相同的测距相对误差下,双目变焦测距系统具有更大的测距范围。通过同步变焦的双目立体视觉系统可提高三维场景的成像分辨率和测距分辨率,为实现小型远距离双目测距系统提供了一种新的有效思路。

To overcome current hardware limitations related to baseline distance and focal length,this paper proposes a method for improving the ranging accuracy of binocular systems using super-resolution imaging based on binocular zoom.The zoom system achieves super-resolution reconstruction,improving the imaging resolution of the binocular system,and consequently,improving the ranging capability and decreasing the relative ranging error,without altering the remaining hardware components.Experimental results reveal that the binocular zoom ranging system has a smaller relative ranging error at the same distance;moreover,the binocular zoom ranging system has a greater range while keeping the relative ranging error constant.The binocular stereo vision system with synchronous zoom can improve the imaging and ranging resolutions of three-dimensional scenes and provides a novel and effective way of building a small long-distance binocular ranging system.