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
66
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://kaotiyun.com/show/tpnO777K
0
考博英语
相关试题推荐
AttheKyotoconferenceonglobalwarminginDecember1997,itbecameabundantlyclearhowcomplexithasbecometoworkoutint
MuchoftheAmericananxietyaboutoldageisaflightfromtherealityofdeath.OneofthestrikingqualitiesoftheAmerican
Socceristhemosttrulyinternationalteamsport,hutthereisstillsomequestion______whetheritshouldbecalledagameor
JimAyershadinvestigatedallmanneroffeloniesinhisfourteen-yearcareerwiththeOregonStatePolice.Likemostofficersw
ThemajorreasonwhyAmericansenjoyanabundantfoodsupplyisthatthearablelandattheirdisposalforfoodproductionis__
Theburglarsransackedtheroomtakinganythingofvaluetheyfound.
Amysteriousphenomenonistheabilityofover-watermigrantstotraveloncourse.Birds,bees,andotherspeciescankeeptrack
Scientistshaveknownformorethantwodecadesthatcancerisadiseaseofthegenes.SomethingscramblestheDNAinsideanucl
Hisimprisonment______hiscolleagues,fortheycannotbelievethatsucharespectableandlaw-abidingpersonwilltakebribes.
Fornearly50years,Spockhasbeena_______authorwriting13booksincludinganautobiographyandnumerousmagazinearticles.
随机试题
1941年9月,中国民主政团同盟创办了盟报
A、expressB、extraC、expertD、exportAe在A项中读[i],而在B、C、D三项中读[e]。
下列哪项不是引起空腹高血糖的原因
尿潴留可分为________和________,病因可分为________,其中常见________。
下列何项不是桑菊饮与银翘散组成中均有的药物
常用的统计调查方式有()。
下列关于不确定性的表述中,正确的是( )。
下列关于上市公司股份锁定期的说法正确的有()。Ⅰ.控股股东持有的首次公开发行股票前已发行股份,应锁定36个月Ⅱ.国外战略投资者取得的上市公司A股股份,应锁定36个月Ⅲ.境内战略投资者认购上市公司非公开发行的股份,应锁定
政策评估是对效果进行研究,是决定政策走向的依据,是合理配置政策资源的基础,是迈向决策科学化的途径。以下()不属于政策评估的基本内容。
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是()。
最新回复
(
0
)