Meanwhile, effect of quantization to edge excursion is analyzed and studied and the error of excursion is given.

同时，还分析研究了量化精度对图像边缘的移位影响，给出了移位误差。

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And this paper classifies the popular methods, the main ideas are as follows: edge preserving, vector quantization, wavelet transform, interpolation kernel, Fractal technology and edge model.

本文对目前流行的各种方法进行了归类，主要思想有：边缘保持、矢量量化、小波变换、插值核、分形技术以及边缘模型。

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