The analysis about the theory of Generalized Hough Transform(GHT)and the existing research in the field of object detection is presented. Based on the original single object detection, the ability of multiple similar objects detection and counting is added. According to the threshold setting, many objects are identified quickly and accurately from the image, and the related position information of these objects is recorded. GHT algorithm is accelerated on GPU by exploiting the potential parallelism in the v...