英语语法分析

The new technique of convolution backprojection algorithm compared with traditional reconstruction algorithm based PC.

基于普通微机，使用这种优化的卷积反投影重建算法与传统重建算法进行了比较。

This paper proposes an algorithm for detecting and tracking human faces on the basis of chromatic histograms and backprojection.

提出了一种基于彩色信息、直方图投影的人脸检测、跟踪算法。

To improve its reconstruction speed, a method combining symmetry with recursion technique to reduce backprojection calculation is presented.

为提高其重建速度，提出了一种利用对称性并结合递归技术的方法来减少该算法的反投影运算量。