CAJ | 학술논문

为了提高概率图模型点模式匹配的精度,本文提出了改进的动态图模型点模式匹配算法.首先,在动态图模型点模式匹配的相似性度量中应用混合高斯分布,以提高模型利用多特征的能力,使匹配方法对噪声更加稳健.其次,在目标点集中引入了虚拟的哑点并给出了包含哑点的相似性度量.当模板中的点和哑点相匹配的相似性度量更大时模板点将和哑点匹配,以减少由异常点所导致的误配.实验结果表明所提出的匹配方法对噪声和异常点更加稳健,匹配的精度也优于传统方法.
위료제고개솔도모형점모식필배적정도,본문제출료개진적동태도모형점모식필배산법.수선,재동태도모형점모식필배적상사성도량중응용혼합고사분포,이제고모형이용다특정적능력,사필배방법대조성경가은건.기차,재목표점집중인입료허의적아점병급출료포함아점적상사성도량.당모판중적점화아점상필배적상사성도량경대시모판점장화아점필배,이감소유이상점소도치적오배.실험결과표명소제출적필배방법대조성화이상점경가은건,필배적정도야우우전통방법.
Aiming to improve the point pattern matching accuracy with graphical models, an improved point pattern matching algorithm is proposed using dynamic generating graphical model. First, mixed Gaussian distribution is applied in similarity measure of dynamic generating graphical model to improve the multi-feature ability of model,which make the matching results more robust to noise. Second, a dummy point is introduced in the target point set and the similarity measure including the dummy point is provided. A point in the template would match the dummy point when the similarity measure of a template point with a target point is less than that of the template point and the dummy point, which can reduce the mismatching rate caused by outliers. Experimental results with simulated and real images show that the proposed algorithm is more robust to noise and outlier, and compared with the traditional methods, matching accuracy is improved.