【摘要】 根据边缘检测的评价标准 ,参照最佳边缘滤波器的设计要求 ,确定选择用于边缘检测的小波母函数的一般准则 ,并在此基础上构造出二次B样条小波 ,提出了基于小波变换的自适应阈值图像边缘检测的新方法。通过计算机仿真对该算法进行了验证 ,结果明显好于采用固定阈值的小波边缘检测。更多还原

【Abstract】 According to the meteyard of edge detection and consulting the design aim of optimal edge filter, this paper discussed the general rules selecting the mother function of wavelet used in edge detection, then constructed a quadric B spline wavelet and presented a method of adaptive thresholds edge detection for image based on wavelet transform. The algorithm was validated using computer emulation, and the result was better than that using fixed thresholds.更多还原