在线时间:8:00-16:00
迪恩网络APP
随时随地掌握行业动态
扫描二维码
关注迪恩网络微信公众号
开源软件名称(OpenSource Name):Qingbao/iris开源软件地址(OpenSource Url):https://github.com/Qingbao/iris开源编程语言(OpenSource Language):MATLAB 100.0%开源软件介绍(OpenSource Introduction):irisIris Recognition Algorithms Comparison between Daugman algorithm and Hough transform with Matlab. DESCRIPTION:Iris is one of the most important biometric approaches that can perform high confidence recognition. Iris contains rich and random Information. Most of commercial iris recognition systems are using the Daugman algorithm. The algorithms used in this project are from open source with slightly modifications, if you would like to use the source code, please check the LICENSE first! Daugman algorithm:where I(x,y) is the eye image, r is the radius to search over the image (x,y), G(r) is a Gaussian smoothing function. The algorithm starts to search from the pupil, in order to detect the changes of maximum pixel values (partial derivative). Hough transform:The Hough transform is a feature extraction technique used in image analysis, computer vision, and digital image processing. where (xi, yi) are the central coordinates, and r is the radius. Generally, and eye would be modeled by two circles of pupil and limbus (iris region), and two parabolas of upper and lower eyelids It starts to detect the eyelids form the horizontal direction, then detects the pupil and iris boundary from the vertical direction. NORMALIZATION AND FEATURE ENCODING:From circles to oblong block By using the 1D Log-Gabor filter. In order to extract 9600 bits iris code, the upper and lower eyelids will be processed into a 9600 bits encoded mask. MATCHING:Q and R are the subjects to compare, that contain 20x480=9600 template bits and 20x480=9600 mask bits, the calculation is using XOR and AND boolean operators. Results:CASIA Iris Image Database(version 1.0) (http://biometrics.idealtest.org/dbDetailForUser.do?id=1): 756 iris images form 108 different subjects. High quality of images by using NIR camera. Resolution of 320*280. Totally, 756*755/2=285390 pairs of comparison for each algorithm, 2268 for intra-class comparison and 283 122 for inter-class comparison. EER:Daugman algorithm: 0.0157 Hough transform: 0.0500 How to run the program
|
2023-10-27
2022-08-15
2022-08-17
2022-09-23
2022-08-13
请发表评论