A pattern quadtree (PQT) data structure for representing binary images is presented.
提出了表示二值图像的模式四叉树(PQT)数据结构。
It is an extension of the quadtree representation of two-dimensional (binary) images.
它是二维(二值)图象线性四元树表示的一种推广。
This article introduces a digital watermarking technology based on adaptive quadtree fractal coding.
提出了一种基于自适应四叉树分形编码的数字水印技术。
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