According to industry and transportation and other fields have higher and higher demands on precision of non-contact detection
a kind of system is designed for high-precision edge detection using advanced CCD and CPLD technology.The noise of one-dimensional video signal is eliminated by system through filtering and correlated double sampling technologies.Then the maximal point of signal gray scale gradient is worked out after A/D transformation.Straight line fitting method determines sub-pixel boundary of CCD image which is disposed by smoothing filtering.System testing indicates that the designed system on chip is characterized by high precision
high-speed
high-integration
high reliability and strong practical applicability.
Fast Edge Detection Based on the Combination of Fuzzy Subsets [J]. Tu Chengyuan~1, Zeng Yanjun~2, Pei Wei~1, Xie Jian~1(1. College of Mechanical Engineering & Electro-Technique Beijing University of Technology, Beijing 100022;2. Biomechanics and Medical Information Institute, Beijing University of Technology, Beijing 100022). Engineering Sciences . 2005(02)