A new system, known as “gait ( 步态 ) recognition” is already being used by police on the streets of Beijing and Shanghai. The Chinese technology company Watrix developed the system.
The system works in a similar way to face recognition. Cameras capture ( 捕获 ) video of people in public places. Then, machines powered by artificial intelligence (AI) examine and study the video. Facial recognition systems identify the shapes and expressions on a person’s face to identify them. Gait recognition uses a person’s body shape and their way of walking to identify them. The system records a person’s shape and movements and then creates a model of the way they walk.
Huang Yongzhen is a former researcher who co-founded Watrix in 2016. He told the Associated Press that the system would not easily be misled by a person changing their usual way of walking or other body movements. This is because the AI system is designed to examine all movements over the entire body. “We believe you are totally unique in the way you walk.” Huang said.
According to Huang, his system can identify people from up to 50 meters away. It is designed to work even when a person’s face is covered or hidden. Successful facial recognition usually requires clear, close-up images of a person’s face. At present, the Watrix system is not able to identify people in real-time. Users have to enter video into the system, which then takes about 10 minutes to process each hour of video.
Huang says his gait recognition system is correct 94 percent of the time. This is below the success rate of many face recognition systems, which is a little discouraging. But he adds that using biometric ( 生物特征的 ) recognition to preserve social security and manage society is an unstoppable tendency. With professional development, gait recognition is meant to be a great business.
1 . How does the system of gait recognition work?
A . By identifying people’s movements in real-time.
B . By analyzing the movements of people’s legs.
C . By distinguishing a person’s body shape and movements.
D . By recording the shapes of and expressions a person’s face.
2 . What makes gait recognition possible?
A . Facial expressions are unique to people.
B . Artificial intelligence system develops fast.
C . People’s way of walking is impossible to change.
D . Walking patterns vary from person to person.
3 . Which word best describes Huang’s attitude towards the system?
A . Pessimistic. B . Favorable.
C . Vague. D . Cautious.
4 . Where is the text most likely from?
A . A guidebook. B . A magazine.
C . A novel. D . A diary.
1 . C
2 . D
3 . B
4 . B
【解析】
【导语】
本文是一篇说明文。文章主要介绍了 Watrix 的 “ 步态识别 ” 系统以及它的工作方式。
1 .
细节理解题。由第二段中的 “Gait recognition uses a person’s body shape and their way of walking to identify them. ( 步态识别使用一个人的身体形状和走路方式来识别人们 )” 可知,通过区分一个人的体型和走路动作,步态识别系统运作。故选 C 项。
2 .
推理判断题。由第三段中的 “He told the Associated Press that the system would not easily be misled by a person changing their usual way of walking or other body movements. This is because the AI system is designed to examine all movements over the entire body. “We believe you are totally unique in the way you walk.” Huang said. ( 他告诉美联社,这个系统不会轻易被改变通常走路方式或其他身体动作的人误导。这是因为人工智能系统被设计用来检查整个身体的所有运动。 “ 我们相信你走路的方式完全是独一无二的。 ” 黄永珍说 )” 可知,每个人的走路方式是独一无二的,所以系统不会被轻易误导,具有准确性,可得出行走方式因人而异使步态识别成为可能。故选 D 项。
3 .
推理判断题。由最后一段中的 “But he adds that using biometric ( 生物特征的 ) recognition to preserve social security and manage society is an unstoppable tendency. With professional development, gait recognition is meant to be a great business. ( 但他补充说,利用生物识别来维护社会安全和管理社会是一种不可阻挡的趋势。随着专业发展,步态识别将成为一项伟大的事业 )” 可知,黄永珍认为步态识别是一种不可阻挡的趋势,并将成为一项伟大的事业,可得出他对此系统持支持态度。故选 B 项。
4 .
推理判断题。由第一段 “A new system, known as “gait ( 步态 ) recognition” is already being used by police on the streets of Beijing and Shanghai. The Chinese technology company Watrix developed the system. ( 北京和上海的街道上,警方已经在使用一种名为 “ 步态识别 ” 的新系统。中国科技公司 Watrix 开发了该系统 )” 和下文可知,文章主要介绍了 Watrix 的 “ 步态识别 ” 系统以及它的工作方式等内容,可能会出现一本杂志上。故选 B 项。