基于三维模型的空间目标视觉位姿测量
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TP242.6 TH741

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Spatial target vision pose measurement based on 3D model
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    摘要:

    传统空间合作目标视觉测量技术的适用范围受合作标志安装情况的限制。以边缘轮廓为合作特征,通过三维结构模型建立合作关系,提出一种适用范围更广的空间合作目标视觉位姿测量方法。方法生成不同观察方位的二维目标特征模板与测量图像进行搜索匹配,采用轮廓方向特征对匹配度进行评价,从最优匹配结果中解算目标位姿参数。采用离线预处理策略和两阶段图像金字塔搜索优化方法对处理过程进行加速。通过数字仿真试验和半实物仿真试验对方法的准确性和稳定性进行了验证,垂直光轴方向位置测量绝对误差优于2 mm,沿光轴方向位置测量相对误差优于07%,姿态测量绝对误差优于02°,单次位姿测量用时小于05 s,能够满足空间目标导航需求。

    Abstract:

    The application scope of traditional spatial cooperative target vision measurement technology is limited by the installation status of the cooperative markers. Taking the edge contour as the cooperative feature, the 3D structural model is used to construct the cooperative relationship and a spatial cooperative target pose vision measurement method with wider application range is proposed. The method generates 2D target feature templates with different observation orientations, which are used to perform searching and matching with the measurement image. The contour orientation features are used to evaluate the matching degree, and the target pose parameters are solved from the optimal matching results. The offline preprocessing strategy and twostage image pyramid search optimization method are used to accelerate the processing. The digital simulation test and semiphysical simulation test were conducted to verify the accuracy and stability of the method. The absolute error of position measurement in vertical optical axis direction is better than 2 mm, and the relative error of position measurement in parallel optical axis direction is better than 07%. The absolute error of attitude measurement is better than 02° and the single pose measurement takes less than 05 s. The proposed method can meet the requirement of spatial target navigation.

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于鲲,丛明煜,戴文聪.基于三维模型的空间目标视觉位姿测量[J].仪器仪表学报,2019,40(4):179-188

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  • 在线发布日期: 2022-01-17
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