用matlab检测直线，圆。椭圆的程序，对直线程序进行了改进，采用随机霍夫变换 ＆由粗到细的检测方式检测，效果好-detection using Matlab straight round. Elliptic procedures, the procedures for linear improvement, randomized Hough Transform & by coarse-to-fine detection methods for detection, effectiv

用两步法霍夫变换检测圆的论文，提高了运算效率，可以用于椭圆检测。-Change Detection by two-step round paper Fahuo Fu, improve the efficiency, can be used for ellipse detection.