阅读的文献里面的句式

1. where CR1iis the number of correspondences between the original image and thei-th transformed image
   谁和谁对应上的角点
2. Na the number of the matched corners in the
   original image when compared to the ground-truth corners
   and Ng the number of corners in the ground-truth.
   检测到的角点和gt匹配上的数量
   3.discuss at length
   详细讨论

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