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
2025-04-16
38
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 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. [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3段说,试验表明机场要检测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:http://tihaiku.com/zcyy/4040409.html
相关试题推荐
Inthewakeof11September,Visionics,aleadingmanufacturer,issuedafac
Inthewakeof11September,Visionics,aleadingmanufacturer,issuedafac
Ipersonallyamoffendedbywhattheyhavetriedtodoinaverymisleadingway
Thenthespeaker______thevariousfactorsleadingtothepresenteconomiccrisis
Guaranteesandwarrantiestellbuyerstherepairsforwhichamanufactureris___
WhereIstheNewsLeadingUs?NotlongagoIwasaskedtojoininapubl
TheEuropeanCommissionissueda______decisiononOct.29permittinganallian
Ipersonallyamoffendedbywhattheyhavetriedtodoinaverymisleadingway
OnthemorningofSeptember11th,IboardedthetrainfromWashingtonHeight
OnthemorningofSeptember11th,IboardedthetrainfromWashingtonHeight
随机试题
TheCosmologicalPrincipleP1:Cosmologistshypothesizedthatthedistributiono
法国古典主义悲剧的奠基之作是()A.《贺拉斯》 B.《熙德》 C.《西拿》
试题三(15分)阅读下列说明,回答问题1至问题5,将解答填入答题纸的对于栏目内。
半夏泻心汤的功用是A.和胃消痞,泻火解毒 B.和胃降逆,开结除痞 C.和胃降
引起小儿心搏骤停的常见原因不包括的是A、心肌病 B、心肌炎 C、失血性休克
从市场经济体制的一般特征看,社会主义市场经济体制和资本主义市场经济体制并无根本区
1998年通过的《中华人民共和国证券法》对公司债券的发行和上市作了特别规定,规定
案例十二: 下面是某求助者16PF的测验结果: 根据测验结果,该
A.增强活血止痛作用 B.增强散瘀止痛作用 C.增强疏肝止痛作用 D.降低
共用题干 女,50岁。右侧上颌缺失第一前磨牙、第一磨牙和第二磨牙。左侧上颌缺失
最新回复
(
0
)