自动化学报
自動化學報
자동화학보
ACTA AUTOMATICA SINICA
2005年
5期
713-719
,共7页
王社阳%宋申民%强文义%陈兴林
王社暘%宋申民%彊文義%陳興林
왕사양%송신민%강문의%진흥림
Spatial moment%corner detection%gradient-direction corner%bilinear interpolation
A novel subpixel corner detection method based on spatial moment is developed in this paper. Firstly, the spatial-moment-generating function, gradient magnitude and variation of gradientdirection corner are used as the decision rule of corner detection by analyzing the mathematical formula of corner-model spatial moment. Then Non-max suppression technique is utilized to detect the vertex of feature corner. Finally, in order to improve its localization performance, subpixel corner detection is implemented by the bilinear interpolation and Newton iteration method. Experiments illustrate that the spatial moment corner detector has better robustness and localization performance than Kitchen detector and Harris detector.
