中文说明：针对传统的硬软阈值函数不连续以及非自适应的缺陷,分别探讨了具有连续性和高阶可导特性的阈值函数、基于局部上下文自适应的阈值函数的构造,并提出基于局部上下文的连续高阶可导阈值函数的构造,并用于图像去噪,实验结果证明了这些方法的有效性。
English Description：
For traditional hard or soft threshold function is not continuous and the limitation of non-adaptive, discusses with continuity and higher-order derivative threshold functions based on the characteristics of construction of local context Adaptive threshold functions, based on successive higher-order derivative of the local context and the proposed construction of threshold functions, and are used for image denoising, the results demonstrate the effectiveness of these methods.