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
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Pre
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Pre
admin
2013-01-18
44
问题
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 McQuade, a spokesman for its manufacturer, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overhead video cameras. AI software analyses the images to work out swimmers, trajectories. 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 on 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 Poseid6n 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 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 £30,000— plus on a Poseidon system ought to be investing similar amounts in teaching children to swim.
How does Poseidon save a life?
选项
A、He plunges into the pool.
B、It alerts the lifeguard.
C、He cries for help.
D、It rashes to the pool.
答案
B
解析
这道题问的是:Poseidon是如何挽救生命的?或者说,Poseidon是用什么方式挽救生命的?B它会提醒救生员。第五段有一句话是这么说的:假如是这样(图像确实是一个游泳人的图像),它就会提醒救生员…可见B是正确答案。A他跳入水池。C他喊救命。Poseidon是软件而不是人,因此这两个选项中用“He”是不妥的。D它急忙朝着水池跑去。软件是不会跑的,因此D也不是正确的答案。
转载请注明原文地址:https://kaotiyun.com/show/KL2O777K
0
考博英语
相关试题推荐
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwithagun,butthemanwiththeportablecomputerinbus
Some______goodluckbroughtusnothingbuttrouble.
The______actionofthepolicemensavedthepeopleinthehousefrombeingburnt.
ThemostfamouspainterinVictoria’shistoryisEmilyCarr.Whenshewasachild,shediscoveredthatwalkinginthewoods【1】mo
Theclumsymovementofthegiantpandaamusedallthe______.
Sarah______articlestotheNewYorkTimesfromtimetotime.
Towhatextentaretheunemployedfailingintheirdutytosocietytowork,andhowfarhastheStateanobligationtoensureth
Towhatextentaretheunemployedfailingintheirdutytosocietytowork,andhowfarhastheStateanobligationtoensureth
InarecentbookentitledThePsychicLifeofInsects,ProfessorBouviersaysthatwemustbecarefulnottocreditthelittlew
ThebuffalowhichthelionfellsprovokeshisaggressionaslittleastheappetizingturkeywhichIhavejustseenhanginginth
随机试题
坝式防护分为()四种形式.
软件测试中的功能测试是()
A果糖二磷酸酶-1B6-磷酸果糖激酶CHMGCoA还原酶D磷酸化酶EHMGCoA合成酶糖酵解途径中的关键酶是答案:()
弥散性血管内凝血(DIC):
某市存在大面积地面沉降,其地下水位下降平均速率为1m/年,现地下水位在地面下5m处,主要地层结构及参数见表11.5.1。按分层总和法计算。试问:今后15年内地面总沉降量(mm)最接近下列()项。
体育与健康基础知识课堂教学中应注意的问题。
为什么要建设社会主义核心价值体系?
已知a1=1,an+1=,则a2,a3,a4,a5的值分别为_______,由此猜想an=________.
A、 B、 C、 C原句是由于下雨所以明天不能去游泳。而图片[A]画的是在刮风,图片[B]画的是阳光灿烂的日子,图片[C]是下雨天,所以,应该选[C]。
InMarchIsraellaunchedamajor______ofLebanon,seizingabout10percentoftheland.
最新回复
(
0
)