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1·A gray-level image is decomposed into a 3-D image sequences by sub-sample of zigzag scan which are transformed using 3-D SWT.

首先，通过之字扫描把灰度图像分解为3维的图像序列，然后使用3-D SWT变换这些图像序列。

2·This paper USES random expanding of circular patches to avoid the zigzag problem of current scan line multi-sample synthesis algorithm.

本文提出了一种基于圆形区块随机增长的多样图纹理合成算法改善了扫描线算法所带来的锯齿效应。