Gait recognition technology is still in its early stages, and its development still faces many difficult challenges. The latest advancements in this technology come at a U.S. research institute funded by representatives of the U.S. Defense Advanced Research Projects Agency to study the identification of people through body language. The theory is that everyone lives in the same way, has his or her own signature or fingerprint, and each has his or her own unique walking pace. The trick is to collect human body language and convert it into numbers that computers can recognize.
A way for each person to establish a "movement signal" to identify. They started by studying the movement signals of each person by filming people walking or running, and then used an analog camera on the computer to capture and store this movement behavior (using software tools to remove redundancy and finally store only a series of outlines of the object as a digital image) . After that, as long as a person takes a picture of his entire walking process, the command computer can determine the person's identity based on the stored image. After the system has well summarized all the different steps, it is said that it has obtained 90% to 95% correct matching. ”
Another approach is to use structural analysis methods to determine a person’s stride and leg extension characteristics.
All database images to date of these two techniques are two-dimensional. , and depends largely on the angle of the camera. Problems arise when a system attempts to compare two shots of the same person using different angles, which directly limits its development! , are not hereditary (making even identical twins' irises different), and remain largely unchanged since childhood, making them ideal for biometric applications. Statistically, iris recognition has been erroneous so far. The rate is the lowest among all kinds of biometric recognition. Currently, only my country Zhongke Molecular Technology Co., Ltd. and another American company have mastered the core technology of iris recognition, and our country has obtained "iris image acquisition device" and "iris image acquisition device". "Identity identification method and device based on iris recognition" and many other patents.
In addition, handwriting recognition, speech recognition, infrared thermogram and other feature recognition methods are widely used. Since the human body has about 3 billion Nucleotides make up the entire chromosome system, and the exchanges and combinations before the formation of germ cells are random, so no two people in the world have exactly the same sequence of 3 billion nucleotides. This is human genetics. Polymorphism. Although genetic polymorphism exists, each person's chromosomes must only come from his parents. This is the theoretical basis of DNA paternity testing.