基于FPGA的折反射全景图像查表实时展开  

Panorama real-time unrolling of catadioptric omni-directional images with look-up table based on FPGA

作　　者：王斌[1] 熊志辉[1] 程钢[1] 陈立栋[1] 张茂军[1] 

机构地区：[1]国防科学技术大学信息系统与管理学院,长沙410073

出　　处：《计算机应用》2008年第12期3135-3137,3140,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60773023);中国博士后科学基金资助项目(20070410977);湖南省自然科学基金资助项目(08JJ4018)

摘　　要：为设计嵌入式折反射全景实时成像系统,在FPGA上通过查表实现折反射全景图像展开,并结合FPGA特点,采用图像分块展开、时间隐藏数据读写技术、FPGA流水线等方法提高展开速度。实验表明,将1024×768 YUV4∶2∶2格式源图像展开为1280×256 YUV4∶2∶2格式目标图像,速度可达100fps,展开速度比基于单像素的全景查表展开提高约12倍。In order to design a real-time embedded system for catadioptric omni-directional images, a look-up table approach for omni-directional images was used on FPGA. Combined with FPGA features, some methods were used to improve the speed of panorama unrolhng, including dividing image into blocks and unrolling the image blocks, time-hidden data access technology and FPGA pipeline technology, etc. Experiments indicate that the methods make the unrolling achieve a level of 100 frames per second, when dealing with 1024 ×768 YUV 4： 2：2 source image to 1280 ×256 YUV4： 2：2 target image. It is 12 times faster than a lolk-up table panorama unrolling based on single pixel.

关 键 词：全景图像 查表 图像块 时间隐藏 FPGA 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TP375[自动化与计算机技术—计算机科学与技术]