The appearance of human eyes consists of sclera, iris and pupil. The sclera is the white part around the eyeball, accounting for about 30% of the total area; The center of the eye is the pupil, accounting for about 5%; Iris is located between the sclera and the pupil, and contains the richest texture information, accounting for 65%. Externally, it is composed of many glandular pits, folds and pigment spots, which is one of the most unique structures in the human body. The formation of iris is determined by genetic genes, and human gene expression determines the morphology, physiology, color and overall appearance of iris. When a person develops to about eight months, the iris is basically large enough to enter a relatively stable period. The appearance of the iris can remain unchanged for decades, unless there are rare abnormalities and great physical or mental trauma. On the other hand, the iris is externally visible, but at the same time it belongs to the internal tissue and is located behind the cornea. Changing the appearance of the iris requires very delicate surgery and there is a risk of visual damage. Iris has a high degree of uniqueness, stability and invariance, which is the material basis of iris recognition.
Among all biometric technologies including fingerprints, iris recognition is the most convenient and accurate one. Iris recognition technology is widely regarded as the most promising biometric authentication technology in 2 1 century, and its future application in security, national defense, e-commerce and other fields will inevitably focus on iris recognition technology. This trend has gradually begun to appear in various applications around the world, and the market application prospect is very broad.
Iris recognition research institutions mainly include Iridian and Iriteck in the United States, Jiris Company in South Korea, Beijing Zhongke Hongba, Beijing Hongan Xiangyu, and Panasonic in Japan. Iridian Company has mastered the core algorithm of iris recognition, and is currently the largest professional iris recognition technology and product provider in the world. Cooperate with LG, Panasonic, OKI, NEC and other enterprises (such as Iris Pass &; BM-ET300，IG-h 100 & amp； Reg and other products), provide the core algorithm of iris recognition in an authorized way, and support partners to produce iris recognition systems. Iridian's core technology also includes image processing protocol and data standard Private ID &；; Reg, identify the server knowho &; Reg, knowho & reg development tools and iris recognition camera.
Before 2000, China did not have its own core intellectual property rights in iris recognition. After 65,438+00 years of continuous efforts, by 2065,438+03, China had formed a gathering place of iris research and production in Beijing, and developed its own iris recognition core algorithm on the basis of years of research, becoming one of the few units in the world to master the core algorithm of iris recognition. Through the use in harsh mining environment, the iris products of China are proved, whether in mines or non-mines.
As the first research base in China to study the mechanism of iris recognition, the state key laboratory of pattern recognition, Institute of Automation, Chinese Academy of Sciences, has developed the iris recognition in vivo detection technology with independent intellectual property rights, which not only fills the gap in the international field of iris recognition technology in China, but also can compete with the international mainstream algorithms. In 2005, the research results of iris recognition in our laboratory won the second prize of national scientific and technological invention. In September 2006, the State Key Laboratory of Pattern Recognition, as the authoritative organization of iris recognition technology in China, participated in the 2006 Biometric Alliance Conference and the 2006 Biometric Technology Experiment organized by the International Biometric Organization, and its speed and accuracy of iris recognition algorithm were recognized by international peers. In addition, the iris image database of the State Key Laboratory of Pattern Recognition has become the largest iris database in the world. More than 2,000 research institutions in 70 countries and regions have applied for it, including more than 500 foreign institutions/kloc-0.
iris recognition technology
Iris is a fabric-like ring with various colors in the pupil of the eye. Each iris contains a unique structure, which is based on features such as crown, lens, filaments, spots, structures, pits, rays, wrinkles and stripes. It is said that no two irises are the same.