基于FPGA的视频拼接技术研究

为满足汽车实时性的要求, 提出了一种基于 FPGA(Field Programmable Gate Array)的车载视频拼接方法。采用 FPGA 实现视频拼接。 整个系统主要由视频采集、 视频预处理、 视频拼接和视频显示组成。 采用 Altera 公司的 Cyclone 郁芯片搭建硬件处理平台, 利用双 DDR2 存储器进行乒乓缓存。 图像拼接采用 sift 算法进行图像匹配, 通过线性融合算法完成环景拼接, 提高了算法的处理速度, 满足了实时性需求。 经验证该平台拥有较好的实用性和扩展性, 满足汽车的实时性需求。

Research on Video Mosaicing Technology Based on FPGA

Because the request of automobile safety is higher and higher, drivers should clearly ensure the surrounding environment of the car, a kind of car surveying technology is proposed. Video mosaicing technology is the basis of surveying technology. In order to meet the requirement of vehicle instantaneity, this paper uses FPGA to achieve the video mosaicing. The system includes video capture module, video pre-processing module, video mosaicing module and video display module. The paper uses CycloneIV development board of Altera company to complete the system and uses double DDR2 to complete Ping-Pong buffer. We use sift algorithm to match videos and linear fusion algorithm to mosaic videos. The system is verified by experiments and its feasibility is proved.