An Improved Iris Recognition Method Based on Gray Surface Matching
A new method is proposed to overcome illumination intensity difference influences the recognition result which occurs during collecting session in this paper. The problem is not effective solved in original algorithm. This algorithm proposes to match after moving two matching feature surfaces to one equivalence gray plane. It also uses the theory of gray surface matching based on feature analysis but another distance is considered for reducing calculation quantity. Firstly, it calculates the gray difference of two pixels which comes from doing subtraction between two different surfaces and gets the gray difference surface. Secondly, it computes the square of the gray difference surface and considers this square as the distance between the two surfaces. At last, it compares the result with a given threshold to implement iris recognition. Simulation and experimental results are shown to illustrate this method performance for both correct recognition rate and the whole recognition time.
equivalence gray plane gray surface iris recognition illumination intensity
Dong-Mei Wu Jiang-NanWang
College of Communication and Information Engineering Xian University of Science and Technology Xian,China
国际会议
The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)
西安
英文
247-249
2009-08-18（万方平台首次上网日期，不代表论文的发表时间）