首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance
In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance
admin
2013-01-25
135
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 is not so good as expected.
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 mugshots, 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.
In the last paragraph, the author points out that_______.
选项
A、any way, the face-recognition technology is good enough to frighten the terrorists
B、the industry will have to recognize the real situation and work hard to improve the technology
C、all the claims are premature
D、we must not expect too much
答案
B
解析
文章最后指出,企业界将不得不面对现实,即努力提高技术,改进产品质量。
转载请注明原文地址:https://www.kaotiyun.com/show/zX1O777K
0
考博英语
相关试题推荐
used本题空格处的句子是一个定语从句,是说罐子是用来喝水的。短语beusedfor意为“用来做……”。
The________ofthewordisunknown,butitiscertainlynotfromGreek.
Forthepastseveralyears,theSundaynewspapersupplementParadehasfeaturedacolumncalled"AskMarilyn."Peopleareinvite
OnesillyquestionIsimplycannottolerateis"Howdoyoufeel?"Usuallythequestionisaskedofamaninaction-amanwalkin
Governmentalbuildingsareusuallydesignedtopresenta(n)solemnandawe-inspiringlook.
Theonlywayheescapedfromthebitterrealitywastolosehimselfinamovie,allowinghisimaginationto______,viewinghimse
Apersonwhois______typicallyhasanxiousthoughtsanddifficultyconcentrationorremembering.
Divorcedfromhiswifejustthreemonthsago,hehasmadequitea______ofhimselfbygallivantingaboutwithhisnewgirlfriend,
Hetoldastoryabouthissisterwhowasinasad______whenshewasillandhadnomoney.
Standardusageincludethosewordsandexpressionsunderstood,used,andacceptedbyamajorityofthespeakersofalanguagein
随机试题
A、Patientanddoctor.B、Studentandprofessor.C、Insurancesalesmanandpatient.D、Generalpractitionerandconsultant.D由对话可知男士
子宫破裂或先兆子宫破裂术后应注意:
成年男性正常血红蛋白浓度
我国信用证为可撤销、不可转让的跟单信用证。()
教师必须十分重视自身的发展,做到以身作则、为人师表,这体现了教师劳动的特点。()
按照德才兼备、任人唯贤的原则和“政治化、革命化、年轻化、国际化”的方针,选好各级公安机关的领导班子,以一流的班子带出一流的队伍,一流的队伍干出一流的工作,一流的工作创造一流的业绩,确保人民的安居乐业,国家的长治久安。()
2,3,4,9,16,45,(),315。
下列各项体现因果关系的有
二次型f(x1,x2,x3,x4)=x32+4x42+2x1x2+4x3x4的规范形是__________.
Whichofthefollowingcan’tdoctorsdo?
最新回复
(
0
)