The method of generating the image sequence and ground truth based on ray - tracking in the optical flow;

采用基于特征的光流法，由单面冠状动脉造影图像序列估计二维血管的运动。

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There is little value in asking directly because people tend not to tell the truth, he said, so tracking sharing shows what people are actually reading, not what they want you to think they are reading.

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Now comes a phenomenon known as the Quantified Self, or self-tracking, which posits a sort of truth in numbers.

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