利用形状匹配技术作数字图象对位

本文提出一种利用区域形状匹配技术来实现数字图象的自动对位的方法。利用对噪声和畸变相对稳定的弦分布形状匹配法,建立由待定位图象中分割出来的区域之间的相似关系。用概率松弛标签算法优化和确认匹配,进而得出对位所需的变换参数。分析和实验均表明:这种方法对有未知比例,位移和旋转变化的图象的对位效果良好。

DIGITAL IMAGE REGISTRATION VIA SHAPE MATCHING TECHNIQUE

An image registration method via shape matching is proposed. The Chord Distribution Method which is less sensitive to noise and distortion is used to set the initial similarities between corresponding regions segmented from the images to be registrated. The Probabilistic Reaxation Labeling (PRL) technique is applied tO optimize and determine the matching relations so that the registration transform parameters could be obtained. Analysis and experiments have shown the good performance of this technique for regist-rating images with unknown scale, position and rotation changes.