JIANG Mai, LIANG Wei, ZHANG Xiao-ling, et al. Research on sub-pixel Zernike moments edge detecting operator based on direction angle model[J]. 2013, 32(2): 16-19.
JIANG Mai, LIANG Wei, ZHANG Xiao-ling, et al. Research on sub-pixel Zernike moments edge detecting operator based on direction angle model[J]. 2013, 32(2): 16-19. DOI: 10.13873/j.1000-97872013.02.023.
Zernike亚像素图像矩边缘检测算子方向角模型研究
摘要
基于Zernike图像矩的理想边缘模型
深入研究了方向角模型与亚像素判据间的关系。利用Zernike矩定义及其旋转不变特性
提出一种新的基于4阶方向角的Zernike矩亚像素边缘检测算子。为了提高边缘算子定位速度
首先基于9×9尺寸模板对Zernike图像矩0~4阶正交复数多项式进行了计算
推导出基于4阶方向角的边缘检测算子参数模型。最后将边缘算子应用在理想图像与实际图像上
检测结果表明:相比于传统的Zernike矩算子
基于4阶方向角的边缘检测算子具有更高的检测精度。
Abstract
Based on Zernike image moments edge model
relationship between direction angle model and sub-pixel criterion is studied deeply.A new edge detecting operator method based on 4-order direction angle is proposed
by using Zernike moments definition and its rotation invariance.In order to improve positioning speed of edge operator
the orthogonal complex polynomial is computed from 0 to 4 orders of the Zernike moments based on 9×9 mask
the edge detecting operator parameter model is deduced.Finally
edge operator is applied to ideal image and real image
test results show that the edge detecting operator based on 4-order direction angle has higher detecting precision compared with traditional method.