基于Bernstein调和函数的图像增强

Image enhancement based on the Bernstein harmonic function

在数字图像的增强处理过程中引入Bernstein调和函数,利用Bernstein调和函数的正性、端点性质以及权性等性质,构造出灰度变换增强的一类非线性变换.该类变换通过调和函数次数的选取和调节灰度变换控制参数完全可以达到数字图像增强的各种目的与要求,具有灵活可控,修改方便等特点.通过实例说明该类非线性变换的图像增强效果是十分有效的.

Bernstein harmonic function was first introduced in digital image enhancement processing, constructed a class of nonlinear transformation by using of the positive properties, endpoint properties and weighted properties of Bemstein harmonic function. This class nonlinear transformation can reach all sorts of digital image enhancement purpose and requirements by selecting frequency of function and adjusting the gray-scale controls parameters. It is flexible, controllable and easy to modify. The examples shown that the image enhancement effect is extremely effective through.