首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail ...
Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail ...
admin
2020-12-24
50
问题
Pool Watch
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. A report 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 (呼机). In trials at a pool in Ancenis, near Nantes, it saved a life within just a few mon this, says Alistair McQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overhead video cameras. AI software analyses the images to work out swimmers’ trajectories (轨迹). 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.
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” (预先警戒) list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger who the of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures (使模糊)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 (时钟装置) radio. Baylis runs a company that installs swimming pools — and he was once an underwater escapologist (脱身杂技演员) with a circus (马戏团).“ I say full marks to them if this works and can save lives,” he says.
How does Poseidon save a life?
选项
A It orders an underwater robot to rescue the drowning swimmer.
B It alerts the lifeguard.
C It displays the swimmer’s shadow on the screen.
D It watches the pool through dozens of overhead cameras.
答案
B
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/ossQKKKQ
相关试题推荐
PoolWatch Swimmerscandrowninbusyswimmingpoolswhenlifeguardsfail...
PoolWatch Swimmerscandrowninbusyswimmingpoolswhenlifeguardsfail...
Jesslikesplayingbasketball,butIlikeswimming.A:how B:whatC:while D:why
PoolWatch Swimmerscandrowninbusyswimmingpoolswhenlifeguardsfail...
PoolWatch Swimmerscandrowninbusyswimmingpoolswhenlifeguardsfail...
共用题干 第三篇PoolWatchSwimmerscandrowninbusyswimmingpoolswhenlifeguards...
共用题干 第三篇PoolWatchSwimmerscandrowninbusyswimmingpoolswhenlifeguards...
PoolWatch Swimmerscandrowninbusyswimmingpoolswhenlifeguardsfail...
PoolWatch Swimmerscandrowninbusyswimmingpoolswhenlifeguardsfail...
PoolWatch Swimmerscandrowninbusyswimmingpoolswhenlifeguardsfail...
随机试题
水闸在首次安全鉴定后,以后应每隔()年进行一次全面安全鉴定。 A.5 B.6
下列各项不属于保险专业代理机构经营业务的是( )。 A、代理销售保险产品
关于碘对比剂的叙述,正确的是 A.泛影葡胺属无机碘化物 B.碘对比剂均为阳性
C解对方程两边求导,化为一阶微分方程,再利用一阶微分方程知识计算。
涉外经济活动需要由宏观管理上()。
关于腭裂的临床特点,不正确的是
某大型商场规定,顾客购买商品数量达到800个单位,有10%的折扣;达到1500个
根据以下资料,回答问题。 2010年上半年,我国移动互联网市场用户数规模达2.
现代企业制度的典型形式是()。A.股份制B.股份合作制C.合伙制D.公司制
禁用糖皮质激素的疾病是()A:骨折B:精神病患者C:孕妇D:过敏性紫癜E:肾病综合征