Stereo Correspondence Problem of Single-lens bi-Prism Stereovison System
A geometry-based method is proposed in this paper to solve the stereo-correspondence problem of single-lens bi-prism stereovision system. With an optical bi-prism and a static CCD camera setup, image pairs are captured synchronously by two virtual cameras which are defined by two boundary lines:optical axis and CCD camera field of view (FOV) boundary line. The geometrical relationship between the 2D images and the 3D scene are established by applying two fundamental theories:geometrical analysis in which all the pertinent points, lines and planes are expressed in 3D Camera Coordinates and the Rules of Refraction. Subsequently, the least square method is employed to fit the epipolar line with a set of obtained corresponding point candidates. The corresponding points are located by searching along the epipolar line with SSD (Sum of Square Difference) correlation algorithm. By utilizing the uniquely geometrical properties of the bi-prism stereovision system, complicated camera calibration procedures are exempted to settle down the stereo correspondence. Hie geometry-based method can be easily generalized to tri-ocular and multi-ocular stereovision systems to facilitate the solving of stereo-correspondence problem. Experiments are conducted to validate this method.
Geometry-based method single lens bi-prism the rules of refraction stereo correspondence epipolar geometry SSD
Kah Bin Lim Mei Jun ZHAO Minh Trung Nguyen
Control and Mecbatronics Laboratory, EA-04-06, Mechanical Engineering Department National University of Singapore, Singapore 117576
国际会议
第二届数字制造国际会议(2nd Sumposium on Digital Manufacturing ISDM09)
武汉
英文
244-250
2009-09-10（万方平台首次上网日期，不代表论文的发表时间）