摘要
有理系数小波滤波器的设计可以通过降低小波函数消失矩阶数来实现,但设计方程中出现的自由变量的取值需要在一定的范围之内,因为需要满足Daubechies紧支集条件。归纳总结了有理系数小波滤波器的设计过程,并以长度为4的有理系数小波滤波器设计为例,对如何确定设计方程中自由变量的取值范围进行了讨论,以得到适用于视觉传感器图像处理算法硬件实现的有理系数小波滤波器。
Rational number wavelet filter can be constructed by reducing the order of vanishing moments of wavelet function,but the value of free variable that appears in design equations should be selected in a certain range,because the wavelet construction must meet Daubechies compact-support condition. This paper makes a conclusion for the procedure of rational number wavelet filter design,and with the example of length-4 rational number wavelet filter,a discussion develops in determination of free variable value range which appears in the design equation,then a rational number wavelet filter can be obtained which applicable for image processing algorithm realization based on vision sensor hardware.
出处
《传感技术学报》
CAS
CSCD
北大核心
2010年第4期533-537,共5页
Chinese Journal of Sensors and Actuators
