双向3D图像传感器及其逻辑算法  

Bidirectional 3D image sensor and its logic algorithm

作　　者：蔡兴旺 韩岭 梁发云[1] CAI Xingwang;HAN Ling;LIANG Fayun(School of Mechatronics Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2021年第2期187-190,共4页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省科技支撑计划资助项目(20151BBE50091)。

摘　　要：针对3D拍摄设备体积较大且只能获取单一方向3D图像的问题,使用FPGA作为主控芯片构建微型化的双向3D图像传感器,实现两个方向3D图像的同步获取,并且实时输出3D合帧视频,通过监控四目同帧图像确保两个方向3D图像的正确性。利用FPGA高速并行处理能力保证数据处理的实时性,设计轮序缓存算法解决跨时钟域问题,设计四目同帧逻辑算法,同步并行处理四路数据以形成3D合帧视频。通过调试和实验可见,基于FPGA构建双向3D图像传感器可以同步获取两个方向的视差图像,能够完成四目同帧视频输出,该硬件系统设计合理且逻辑算法正确。Aiming at the problem that 3D shooting equipment has a large volume and can only obtain 3D images in a single direction,a miniaturized bidirectional 3D image sensor was constructed using FPGA as the main control chip to realize the synchronous acquisition of 3D images in two directions,and output 3D combined video in real time.The correctness of 3D images in two directions was ensured by monitoring the four eye combined image.FPGA high-speed parallel processing ability was used to ensure the real-time data processing,turn sequence cache algorithm was designed to solve the problem of cross clock domain,and Quad frame logic algorithm was designed to synchronously process four channels of data to form 3D combined frame video.Through debugging and experiments,it can be seen that the bidirectional 3D image sensor based on FPGA can synchronously acquire the parallax images in two directions,and can complete the output of four eyes in the same frame.The hardware system design was reasonable and the logic algorithm is correct.

关 键 词：视差图像 双向3D图像传感器 四目同帧 3D视频 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]