ellipse detection using the Hough transform 作者 H.K. Yuen, J. Illingworth and J. Kittler
Department of Electronics and Electrical Engineering
University of Surrey, Guildford。對霍夫變換檢測檢測橢圓的原理有一定的參考意義。
object recognition using fast adaptive Hough transform 快速自適應霍夫變換
作者：D.D. Haule. A.S. Malowany
Computer Vision and Robotics Laboratory
Department of Electrical Engineering
McGill University。IEEE 1989的文章，對指導霍夫變換檢測目標的識別有一定的參考意義
eye matching using Circular Hough transform for eyedetection and precise eyes location. it is a very good code that works on both grayscale and jpg image.
