The trifocal tensor is the mathematical expression of trifocal geometry, it has strict constraints to correspondence points and lines in three images.
三视张量是三视几何的数学表达，它对三幅图像上的同名点、同名线都存在严格的约束关系。
For three-dimensional reconstruction, this essay gives new reconstruction method for points and lines. Especially the overall reconstruction method for lines reduces much calculation and time.
在三维重建时，本文提出了新的点重建方法和直线的整体重建方法，其中直线的整体重建方法大大地减少了直线重建的计算量和计算时间。
The processing works after vectorizing topographic maps were discussed, such as diluting, right Angle processing, deleting redundant points and lines.
讨论了地形图矢量化后的几项处理工作，如曲线上点的稀释、直角化处理、重复点线的删除、接边等。
The processing works after vectorizing topographic maps were discussed, such as diluting, right Angle processing, deleting redundant points and lines.
讨论了地形图矢量化后的几项处理工作，如曲线上点的稀释、直角化处理、重复点线的删除、接边等。
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