基于深度图像的奶牛体型评定指标获取技术  

Acquisition of Appraisal Traits for Dairy Cow Based on Depth Image

作　　者：郭浩[1] 王鹏[2] 马钦[1] 朱德海[1] 张胜利[2] 郜允兵[1] 

机构地区：[1]中国农业大学农业部农业信息获取技术重点实验室,北京100083 [2]中国农业大学动物科学技术学院,北京100193

出　　处：《农业机械学报》2013年第S1期273-276,229,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金："十二五"国家科技支撑计划资助项目(2013BAD35B02)

摘　　要：为提高现有奶牛体型线性评定指标获取技术的精度、效率及自动化程度,提出基于深度图像的重建奶牛评定性状相应部位,进而进行测量获取线性评定指标的研究方法,并选取Xtion PRO摄像头作为深度图像采集设备,基于OpenNI搭建的数据获取程序完成对奶牛随机部位的点云获取,并结合MeshLab完成对获得的点云数据进行可视化和测量处理,最后将人工测量与重建点云测量所得到的指标进行对比。结果表明,采用低成本的RGBD设备获取奶牛被评定性状相应部位的深度图像,通过从深度图像得到的点云进行测量获取线性评定指标的方法是可行的,在采集距离小于1 m条件下,绝对误差小于10 mm,相对误差小于9%。In order to improve the accuracy,efficiency and automatic degree of existing acquisition techniques of dairy cow's conformation linear appraisal traits,a research method based on depth image was proposed reconstructed the corresponding part with dairy cow's conformation linear appraisal traits to measure and acquire linear appraisal indexes.Xtion PRO was chosen as raw data acquisition device.The experiment acquired point cloud from dairy cow 's body random position was completed by data acquisition program compiled based on OpenNI interface,and then measured by using MeshLab.The results showed that it was feasible to use low cost RGBD equipment to acquire a range image of corresponding part with the dairy cow's conformation linear appraisal traits.And then,according to the point cloud acquired from range image,the dairy cow 's appraisal indexes were reconstructed and acquired.The relative error was less than 9% and the error was less than 10 mm.

关 键 词：奶牛 评定指标 深度图像 重建 点云 

分 类 号：S823[农业科学—畜牧学] TP391.41[农业科学—畜牧兽医]