首页
登录
职称英语
In the wake of 11 September, Visionics, a leading manufacturer, issued a fac
In the wake of 11 September, Visionics, a leading manufacturer, issued a fac
游客
2025-04-05
16
管理
问题
In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it " protecting civilization from the faces of terror". The company’s share price skyrocketed, as did the stocks of other face-recognition companies, and airports across the globe began installing the software and running trials.
As the results start to come in, however, the gloss(光滑表面)is wearing off. No matter what you might have heard about face-recognition software, Big Brother it ain’t.
The concern was based largely on an independent assessment of face-recognition systems carried out in 2000 in the U. S. by the Department of Defense. These tests found that to catch 90 percent of suspects at an airport, face-recognition software would have to raise a huge number of false alarms. One in three people would end up being dragged out of the line and that’s assuming everyone looks straight at the camera and makes no effort to disguise himself. Results from the recent airport trials would seem to justify that concern.
Most face-recognition systems use some kind of geometric technique to translate a picture of a face into a set of numbers that capture its characteristics. Once it has identified these boundaries, the software calculates their relative sizes and positions and converts this geometry into what Visionics calls a "faceprint". Feed the software a series of mug-shots(通缉犯), and it’ll calculate their faceprints. Then it can monitor live CCTV images for the faces of known suspects. When it finds a match, it raises an alarm.
Even if the system does manage to capture a face, the problems aren’t over. The trouble is that a suspect’s faceprint taken from live CCTV is unlikely to match the one in the database in every detail. To give themselves the best chance of picking up suspects, operators can set the software so that it doesn’t have to make an exact match before it raises the alarm. But there’s a price to pay: the more potential suspects you pick up, the more false alarms you get. You have to get the balance just right.
Despite the disappointing tests, some people insist that face-recognition technology is good enough to put terrorists off. After all the claims and counter-claims, with no one able to discern(洞察)the truth, the industry may soon have to face up to reality. [br] What is the fatal defect of the system according to the U. S. Department of Defense?
选项
A、Too many false alarms were raised.
B、Everyone should look straight at the camera.
C、Only 90% of suspects at an airport were found.
D、Everyone should not disguise himself.
答案
A
解析
第三段说,试验表明机场要检测出90%的嫌疑犯,由于识别软件的错误率太高,每3个人中就有1个被认错。
转载请注明原文地址:https://tihaiku.com/zcyy/4027944.html
相关试题推荐
Inthewakeof11September,Visionics,aleadingmanufacturer,issuedafac
Inthewakeof11September,Visionics,aleadingmanufacturer,issuedafac
Inthewakeof11September,Visionics,aleadingmanufacturer,issuedafac
AccordingtoRyle,thetaskofphilosophyistorestate"______misleadingexpres
Theyissueda______totheeffectthatthecovenant(违反契约的诉讼)wouldnothaveanypl
Onlytwoyearsago,areportthattwo-thirdsofleadingAmericanuniversitie
Onlytwoyearsago,areportthattwo-thirdsofleadingAmericanuniversitie
Onlytwoyearsago,areportthattwo-thirdsofleadingAmericanuniversitie
Weliveinanascendingscalewhenwelivehappily,onethingleadingtoano
OnehundredandthirteenmillionAmericanshaveatleastonebank-issuedcre
随机试题
人民币(RenminbiorRMB)是中国大陆地区的法定货币。中国人民银行(thePeople’sBankofChina)是国家管理人民币的
Montrealislargerthan_______inCanada.
以下说法不正确的是()。A:侵入岩深度大于5公里的叫作深成岩,如花岗岩 B:
患儿女,6个月,2个月前因发热、抽搐3天确诊为化脓性脑膜炎,经治疗症状及体征消失
下列财产中可以抵押的有( )。A.土地所有权 B.抵押人所有的房屋和其他地上
共用题干 FamilyHistoryInanagewhentechn
保泰松与双香豆素合用可增加出血倾向的原因是A.降低双香豆素的代谢 B.降低双香
支出法核算国内生产总值时,进行核算的角度为()。A.货物和服务的生产 B.货物
=()。
治疗痫证脾胃虚弱宜A.配人中 B.配丰隆 C.配太溪 D.配足三里
最新回复
(
0
)