基于三维测量的奶牛体型性状指标的数据采集

采用立体视觉的三维测量方法重建奶牛的三维模型,实现了对奶牛的体型性状指标测量,首先通过立体标靶进行摄像头的标定,然后利用SIFT(scale invariant feature transform)尺度不变特征点匹配算法对图像进行特征点提取与匹配,最后通过投影矩阵计算匹配特征点的三维坐标;针对双目视觉中摄像头视角范围受限问题,提出通过在相邻视点的公共区域设置标记点,根据标记点计算不同坐标系的转换关系,将各局部特征点转换到统一坐标系下,从而实现不同视点下各局部区域的三维拼接.实验表明,采用该方法重建的奶牛模型较理想,测量精度和测量效率满足评定要求,能够取代手工测量.

Data Collection of Cow's Body Traits Based on Three-Dimensional Measurement

Three-dimensional measurement based on stereo vision method was used to reconstruct three-dimensional model of cowst,hen body traits of cows were measured.Camera calibration was achieved by three-dimensional targett,hen the SIFT(scale invariant feature transform)was used for image feature extraction and matchingf,inally3,D coordinates of feature points were calculated by the projection matrix.For the scope of the camera angle is limited in binocular visioni,t was presented that through setting mark points i...