光学精密工程2024，Vol.32Issue(10)：1443-1455,13.DOI:10.37188/OPE.20243210.1443
实时输出视频的水下主动偏振成像
Real-time video output method for underwater active polarization imaging
摘要
Abstract
In the underwater active polarization imaging method,it is necessary to mechanically rotate the polarizer in front of the camera to obtain the orthogonal polarization state images,which makes it difficult to output the de-backscattering video in real time.The method of real-time video output method for under-water active polarization imaging was proposed.Firstly,the orthogonal polarization switching position was changed from the camera side to the light source side,while the polarization state of the analyzer at the camera end remained unchanged,and it was proved that this change did not affect the effect of de-backscat-ter.Then,the arrayed orthogonal polarization light source was designed.The light source was composed of two groups of LED lamp beads with orthogonal polarization.The two groups of LED lamp beads were controlled by an independent drive circuit to output polarized light with orthogonal polarization state,and the mechanical structure of polarization state switching was eliminated from the hardware.Third,a syn-chronous control device was designed to control the polarization state of the light source output and the camera to take pictures,which realized the acquisition of orthogonal polarization state image data.Finally,the pipelined active polarization image processing method was used to realize real-time video output.The experimental results show that the proposed method can output the de-backscattering video in real time,and the performance of the de-backscatter is close to that of the mechanical active polarization imaging method.The deviation degree of the de-backscattering performance of the two methods is less than 4%,and the improvement factor of the image EME value is up to 17.96.This method has the advantages of simple structure,low cost,no influence on output frame rate,and wide selectivity of the camera,and can be widely used in the underwater imaging field.关键词
主动偏振成像/去后向散射/阵列正交偏振光源/实时视频Key words
active polarization image/de-backscatter/arrayed orthogonal light source/real-time video分类
计算机与自动化引用本文复制引用
吴厚德,翟予峥,王洪昌,李持尧,郭睿琦..实时输出视频的水下主动偏振成像[J].光学精密工程,2024,32(10):1443-1455,13.基金项目
中央高校基础研究基金资助项目(No.3132019340,No.3132019200) （No.3132019340,No.3132019200）
中华人民共和国工业和信息化部高新技术船舶研究项目(No.MC-201902-C01) （No.MC-201902-C01）
