把灰度图像看作是某种分数布朗运动形成的(分形)灰度表面，并用这种灰度表面的分形维数来刻画它的纹理粗糙程度。
By taking the image to be compressed as a grey-level surface of some fractal brown motion, the fractal dimension of this surface gives out a good description of its texture characteristics.
用成形滤波器对高斯分布的白色过程滤波，便可以得到具有期望分数维的布朗运动分形图形。
The fractional Brownian motion based fractal Image with desired fractional dimension can be generated by applying its shaping filter to a Gaussian distributed white process.
提出了时变维数的概念，对原有分数布朗运动模型加以拓展，使其成为具有局部自相似性的随机过程。
The concept of varying-time dimension is presented and the original fractional Brownian motion model is extended to be a locally self-similarity stochastic process.
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