最后，通过局部校正来提高所圈定条带区域的精确度。

Finally, it makes use of local rectification to improve the precision of the enclosed band.

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因此，这种局部和并行算法仅仅涉及一个粗网格上的整体逼近和细网格上的局部校正。

Hence, these local and parallel algorithms only involve one small original problem on coarse mesh and some correction problems on local fine grid.

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为了校正畸变图像，分别利用物理校正、整体校正和局部校正三种方法对原始图像进行校正。

To correct original distorted image, three different image correction methods, namely, the physical correction, the global correction, and the local correction, are applied.

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