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
Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Soci
Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Soci
admin
2011-01-02
80
问题
Pool Watch
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Prevention of Accidents says that on average 15 people drown in British pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard’s pager. "In trials at a pool in Ancenis, near Nantes, it saved a life within just a few months, " says Alistair MeQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overheard video cameras. AI software analyses the images to work out swimmers trajectories(轨道,轨线). To do this reliably, it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool. "The underwater environment is a very dynamic one, with many shadows and reflections dancing around. " says McQuade.
The software does this by "projecting" a shape in its field of view onto an image of the far wall of the pool. It does the same with an image from another camera viewing the shape from a different angle. If the two projections are in the same position, the shape is identified as a shadow and is ignored. But if they are different, the shape is a swimmer and so the system follows its trajectory.
To pick out potential drowning victims, anyone in the water who starts to descend slowly is added to the software’s "pre-alert" list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures the pool’s floor texture when viewed from overhead. If so, it alerts the lifeguard, showing the swimmer’s location on a poolside screen.
The first full-scale Poseidon system will be officially opened next week at a pool in High Wycombe. Buckinghamshire. One man who is impressed with the idea is Travor Baylis, inventor of the clockwork radio. Baylis runs a company that installs swimming pools -- and he was once an underwater escapologist (表演脱身术的人)with a circus. "I say full marks to them if this works and can save lives, " he says. But he adds that any local authority spending 230,000 -- plus on a Poseidon system ought to be investing similar amounts in teaching children to swim.
Which of the following statements about Trevor Baylis is NOT true?
选项
A、He runs.
B、He invented the clockwork radio.
C、He was once an entertainer.
D、He runs a company.
答案
A
解析
B项“他发明了机械装置的无线电”可从第六段找到;C项“他曾经是一名从事游戏的演员”和D项“他经营一家公司”也都可在第六段找到,故选A。
转载请注明原文地址:https://kaotiyun.com/show/XALd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
Structurally,theinsideofearlyChristianchurcheswassimple.
NiagaraFallsisagreattouristsite,drawingmillionsofvisitorseveryyear.
ScientistsDevelopWaysofDetectingHeartAttackGermanresearchershavecomeupwithanewgenerationofdefibrillators(除颤
HypertensionDrugsFoundtoCutRiskofStrokeAustraliandoctorsdeclaredMondaythatacocktailofsimpleantihypertensive
AmericanDreamsThereisacommonresponsetoAmericaamongforeignwriters:theUSisalandofextremeswherethebestof
OnBritishNewspapersBesidesthedailynewspapers,thereareanumberofSundaynewspapersinBritain.Manyofthemareconnect
EconomicReforminChinaMoreUSsinologistshaveexpressedconfidenceinChina’seconomicreformandtheprospectsforChina’s
DriedFoodsCenturiesago,mandiscoveredthatremovingmoisture(51)foodhelpedtopreserveit,andthattheeasiestwaytodot
OnBritishNewspapersBesidesthedailynewspapers,thereareanumberofSundaynewspapersinBritain.Manyofthemarecon
BenefitPaymentstoAmericanWorkersGermanChancellor(首相)OttoVonBismarckmaybemostfamousforhismilitaryanddiploma
随机试题
最可能的诊断为最主要的治疗措施为
下述哪项对诊断妊娠甲亢无帮助
建设单位应当自建设工程竣工验收合格之日起()日内,将建设工程竣工验收报告和规划、公安消防、环保等部门出具的认可文件或准许使用文件,报有关部门备案。
下列属于公司收购时可能面临的风险的是()。
纳税人的下列行为,不征收增值税的有()。
河北民歌《小白菜》属于哪种拍子类别?()
教学目标与任务是选择教学方法的重要依据。有利于实现技能、技巧性教学目标的教学方法是()。
按监督主体与监督对象的隶属关系可分为权力机关监督、检察机关监督、审判机关监督、公安机关内部监督等。()
“离开革命实践的理论是空洞的理论,而不以革命理论为指南的实践是盲目的实践。”这段话强调的是()。
Dickwasasailoronabigship.ItwenttoJapanandAustralia,soDickwasoftenontheshipforsomemonthsatatime.Whenh
最新回复
(
0
)