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
2012-07-18
56
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.
The first paragraph tells us that_____.
选项
A、Visionics produced the best face-recognition software enhancing airport security
B、Visionics’s stocks rose in price
C、the airports were satisfied with the software
D、Visionics’s software was a great success
答案
B
解析
第一段说“9.11”以后,各公司纷纷推出面容识别软件,据说它可以加强机场安全。各机场纷纷选购,各公司的股票随之上涨。选项中只有股票上涨是事实。
转载请注明原文地址:https://kaotiyun.com/show/NpnO777K
0
考博英语
相关试题推荐
Alightsleeperisusuallyvery______toanysoundevenasinaudibleasthehummingofamosquito.
DespiteDenmark’smanifestvirtues,DanesnevertalkabouthowproudtheyaretobeDanes.ThiswouldsoundweirdinDanish.Wh
AttheKyotoconferenceonglobalwarminginDecember1997,itbecameabundantlyclearhowcomplexithasbecometoworkoutint
Itwasallagreedthatthefirstproblemthenewgovernmentwouldhaveto______wasunemployment.
Classdivisioninsocietymakeequalityofopportunityhardtoobtain.Itisbyno______.
Theburglarsransackedtheroomtakinganythingofvaluetheyfound.
Inno______shouldyoudothis,withouthelpandadvicefromyourdoctor—restrictingthedietofsmallchildrencanbeverydan
Criticalarticlesonthisnovelarguethatthoughtheplotseemslogical,theendingofthenovelis______.
Investmentinthepublicsector,suchaselectricity,irrigation,quarrying,publicservicesandtransport(excludingvehicles,
Sinceyouhavefailedthreeofthelastfourtests,youcannotaffordtobe______aboutpassingfortheterm.
随机试题
胃气虚弱,痰浊内阻,心下痞硬,噫气不除,治宜选用()(1995年第49题)
GVHR可分急性和慢性两种,其类型划分特征正确的是
A.充盈缺损B.鹅卵石征C.杯口征D.铅管征E.鸟嘴征克罗恩病的典型X线征象是()
酚妥拉明兴奋心脏的机制是()。
[背景资料]某城市围堰堤为1级堤防,在原排涝站西侧200m新建一座排涝泵站(包括进水建筑物、泵室、穿堤涵洞、出水建筑物等),总装机容量1980kW,合同工期为16个月,自2002年11月至2004年2月。该地区主汛期为6、7、8三个月,泵室、穿堤涵洞等主
伪造、擅自制造他人注册商标标识.情节特别严重的,应判处()有期徒刑并处罚金。
既可以考察对单词,也可以考察对图片、脸谱等材料的错误记忆的研究范式是
一元二次方程x2+(m一2)x+m=0的两实根均在开区间(一1,1)内,则m的取值范围为().
[*]
Assumingthattheengineeringproblemscouldbeovercome,theproductionofatimemachinecouldopenupaPandora’sboxofcaus
最新回复
(
0
)