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2-D AND 3-D POSE ESTIMATION OF ARTICLES FROM 2-D IMAGES
2-D AND 3-D POSE ESTIMATION OF ARTICLES FROM 2-D IMAGES
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机译：从2D图像进行2D和3D姿势估计
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摘要
A prosthesis imaging and migration tracking method and apparatus that analyses two-dimensional images, typically X-rays, to determine the position and orientation of a three-dimensional object such as prosthesis. A three-dimensional representation of the object of the implanted three-dimensional object is matched to a silhouette, so as to estimate its pose. A scaling factor can also be determined to indicate reasonably accurate distances. Once the pose of the known three-dimensional object is determined, the surrounding bone can also be identified in the two-dimensional image using object determination techniques or matching with historical or model information of the other object. Knowledge of the three-dimensional pose of the objects is used for determining the relative complex movement of the objects by comparing their poses over time. Pictorial and graphical records can than be generated to assist clinical assessment of the bone and prosthesis union. The method and apparatus of the invention can also be used on historical two-dimensional images and the larger the number of images, even those having different aspects of the same limb, the better the assessment of the migration of the objects identified.
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