G - Physics – 08 – B
Patent
G - Physics
08
B
G08B 21/00 (2006.01) G08B 21/08 (2006.01) H04N 7/18 (2006.01)
Patent
CA 2192236
The invention relates to a device for monitoring the absence of motionless bodies in a swimming pool. Two cameras (1) provide for the permanent immerging of the bottom of the swimming pool. These images are first digitized and then processed by a computer. The superimposition of the two information permits to analyze all the surface of the swimming pool in order to determine if a portion is masked by an obstacle. When such obstacle is detected, the duration of the presence of each masked pixel is analyzed. After a certain time delay, and for a minimum number of neighbouring pixels, an alarm is generated.
L'invention concerne un dispositif de surveillance de l'absence de corps im- mobile dans une piscine. Deux caméras (1) saisissent en permanence l'image du fond de la piscine. Ces deux images sont d'abord digitalisées puis traitées par un ordinateur. La superposition des deux in- formations permet d'analyser la totalité de la surface de la piscine, afin de déterminer si une partie est masquée par un obstacle. Lorsqu'un tel obstacle est détecté, la durée de la présence de chaque pixel masqué est analysée. Passé un certain délai, et pour un nombre minimal de pixels voising, une alerte est générée.
Menoud Edouard
Robic
LandOfFree
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