CAJ | 학술논문

在已有的亚像素边缘定位方法中,从复杂度和运算时间等角度考虑,二次曲线拟合边缘定位是一种较好的方法,然而目前只能应用在直线边缘的亚像素定位中.为此提出了一种针对非直线边缘的复杂图像进行亚像素级边缘定位的算法,依据细化后边缘上前后像素的邻接关系将二次曲线拟合亚像素定位应用到二维情况.实验验证了对直线边缘图片以及具有非直线边缘的实际物体图片进行亚像素级边缘定位的正确性及可靠性.结果表明,不仅可以检测直线,而且对较复杂边缘目标的定位精度达到了亚像素级.
재이유적아상소변연정위방법중,종복잡도화운산시간등각도고필,이차곡선의합변연정위시일충교호적방법,연이목전지능응용재직선변연적아상소정위중.위차제출료일충침대비직선변연적복잡도상진행아상소급변연정위적산법,의거세화후변연상전후상소적린접관계장이차곡선의합아상소정위응용도이유정황.실험험증료대직선변연도편이급구유비직선변연적실제물체도편진행아상소급변연정위적정학성급가고성.결과표명,불부가이검측직선,이차대교복잡변연목표적정위정도체도료아상소급.
Among all the algorithms used in sub-pixel edge detection, the one according to the fit conic is better than the other. But most applications of this algorithm were used to detect straight line. The paper proposed a devel-oped algorithm aimed to detect the sub-pixel edge in complex image. In this algorithm, the relationship of neighbor-hood pixels is used to apply the fit conic algorithm to 2D condition. The experiment proves the correctness and relia-bility of the algorithm proposed in this paper. And the result shows that it not only can detect the line in sub-pixel level, but also can detect the sub-pixel edge of complex edge target.