基于达芬奇技术的收割机视觉导航图像处理算法试验系统  

Testing system of image processing algorithm of visual navigation system for harvester based on DaVinci technology

作　　者：张成涛[1,2] 谭彧[1] 吴刚[1] 王书茂[1] 

机构地区：[1]中国农业大学工学院,北京100083 [2]广西工学院汽车系,柳州545006

出　　处：《农业工程学报》2012年第22期166-173,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：高等学校博士学科点专项科研基金项目(20110008110009)

摘　　要：为缩短收割机视觉导航系统研发周期、降低确定图像处理算法的试验成本,该文阐述了达芬奇技术软件框架,分析了H.264视频编解码算法工作原理,研制了基于达芬奇技术的收割机视觉导航图像处理算法试验系统。该系统以双核数字视频处理器DM6446为核心,在达芬奇平台上实现了田间试验视频图像编码采集和室内视频图像解码与处理的功能模块。经试验验证,编码后的视频压缩率可达47～103倍,解码后视频帧率30帧/s,系统实时性高、工作稳定可靠,同时可进行多种图像处理算法试验。该试验系统对于收割机视觉导航图像处理算法研究提供了有效的分析手段。In order to shorten the development cycle of visual navigation system for harvester and reduce image processing algorithms test cost, after illustrating the DaVinci technology software framework and analyzing the working principle of video codec based on H.264, a system based on DaVinci technology was developed to test image processing algorithms of visual navigation system in harvester. Digital video DM6446 dual-core processor as the core, the system realized two function blocks based on DaVinci technology, the first of which was the video of field experiment encoding and acquisition, and the second was indoor test of video decoding and image processing algorithms. Experimental results showed that the system had advantages of steady performance and high real-time with the encoded video compression ratio up to 47-103 times and the decoded video frame rate 30s-1 , and many image processing algorithms could be tested simultaneously. The system provides effective analysis method for image processing algorithm of visual navigation system in harvesters.

关 键 词：收割机 导航 图像处理 达芬奇 视频编解码 

分 类 号：S225[农业科学—农业机械化工程]