The given data base is the brain images database to apply brain tumor detection algorithms which are normally based on symmetric axis.As all images are based on symmetry this database is highly useful those who are working on symmetry axis

鉴于棋盘格图案在摄像机标定中有着广泛的应用,因此为了对边缘模糊的棋盘格图像进行在线标定,针 对目前棋盘格图像角点检测算法的局限性,提出了一种可以自动实现的棋盘格图像角点检测算法, 该算法是利用 周围图案对称和灰度值对比明显的独特性质,设计了由对称算子S和方差算子V组合而成的角点检测算子) )) 对 称方差算子( symmetry andvariance), 简称SV算子。该算子不仅构思巧妙、易于实现、计算量小,而且对棋盘格图像 的旋转变换和亮度变换具有鲁棒性和抗噪能力强的优点。实

This paper presents a novel approach for detecting vehicles for driver assistance. Assuming flat roads, vanishing point is first estimated using Hough transform space to reduce the computational complexity. Localization of vehicles is carried u