针对二值图像的几何相似性，本文提出一种基于等腰直角三角形的压缩算法。

We put forward an compression algorithm based on isosceles right triangle according to the geometric similarity of binary images.

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为了提高二值图像的压缩比，采用自顶向下的编码方法，提出一种基于等腰直角三角形的分形图像压缩算法，并进行仿真实验。

In order to improve the ratio of binary image compression, using top-dowm method of coding, bring forward a fractal image compression method based on isosceles right triangle, and simulated.

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