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。

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However, instead of each pixel representing a colour, as in the image on a screen, these readings show all the different chemical compounds present in each of the thousands of tiny patches that together make up the sample.

ECONOMIST: Forensic technology