带有阈值的块拼接纹理合成算法，即选择当前合成块时采用与特定阈值比较，而不是从最小误差块的一定范围内寻找合适的块-Patches with a threshold value of the texture synthesis algorithm, which select the current synthesis of block used with a specific threshold value, rather than from the smallest block error wit

Density Based Spatial Clustering of Applications of Noise Uses a density-based notion of clusters to discover clusters of arbitrary shapes, in spatial databases Key idea: for each object of a cluster, the neighborhood of a given radius contains

Comparison of soft threshold and hard threshold and today various threshold calculation method, Based on piecewise nonlinear weight value Pso algorithm, Chaos-based simulated annealing algorithm.