![]() ![]() ![]() over a time period masking out a portion of said difference image, so long as no motion detected signal is provided, thereby providing a masked difference image and thenĭ. providing a motion detected signal in response to said difference image Ĭ. Subtracting the old image from the new image forī. Providing a new image of the elevator door sill and hall Providing an old image of the elevator door sill and hall providing an image of an elevator door sill and a hall in front of an elevator including A method for detecting motion in the vicinity of an open elevator hall door, comprising:Ī. Proximity detector circuitry especially for lift doorsġ. Portable elevator traffic pattern monitoring system Method of, and apparatus for, controlling the position of an automatically operated doorĪpparatus for detecting relative crowding in a hall Self correcting infrared intrusion detection systemĪutomatic control using proximity sensorsĭetection device having energy transmitters located at vertically spaced apart points along movable doors Apparatus and methods for detecting number of people waiting in an elevator hall using plural image processing means with overlapping fields of viewĮlevator control system with image pickups in hall waiting areas and elevator carsĭot-matrix video enhancement for optical character recognition ![]()
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