摘要
椭圆配准作为图像配准中的一类,是目标识别研究中的一项关键技术,在工程实现中有很大的困难。通过研究利用目标的椭圆表示形式,结合常用的目标矩形表示形式,可以获取矩形与其内切椭圆的4个切点及中心点作为椭圆配准的5个控制点,利用仿射变换完成椭圆图像的配准。该方法在实测车标图像的归一化处理中效果很好。
Image registration is an important technology in object recognition. Ellipse registration is very difficult to implement in practical engineering as a kind of image registration. The paper shows a method to register ellipse, the object is showed by ellipse and rectangle together, the center point and the four points of tangent between inscribed ellipse and rectangle can become five control points for the image registration, and then the image registration can be executed by affine transformation. The method is very useful for vehicle-logo normalization.
出处
《激光与红外》
CAS
CSCD
北大核心
2007年第6期567-570,共4页
Laser & Infrared
基金
国家自然科学基金项目(No.60541001)
全国优秀博士学位论文作者专项基金项目(No.200443)
关键词
椭圆配准
车标
矩形
控制点
归一化
ellipse registration
vehicle-logo
rectangle
control point
normalization
