Method and its application for video recorder and player
First Claim
1. A video recorder/player for acquiring image data from a plurality of cameras and storing the image data in recording media, including:
- a frame switcher for switching said plurality of cameras in a predetermined sequence and acquiring image data from each of said cameras at a predetermined frame rate;
an image processor for detecting an event set in advance from said image data acquired from each of said cameras; and
frame rate changing means for changing the frame rate of the image date from which the event is detected;
said video recorder/player comprising;
first means for changing only the frame rate of the image data from which the event is detected, when the event is detected;
second means for changing both frame rate of the image data from which the event is detected and frame rate of other image data, when the event is detected; and
third means for changing the frame rate of other image data within a range in which a possible obstacle is as small as possible, when the event is detected, and for changing as much the frame rate of the image data from which the event is detected;
wherein;
said frame rate changing means selects a processing by said first means when the frame rate of the image data from which the event is detected is changeable, even when the frame rate of the image data other than the image data from which the event is detected is not changed;
said frame rate changing means selects a processing by said second means when the image data for which no obstacle occurs even when the frame rate is lowered exists in the image data other than the image data from which the event is detected; and
said frame rate changing means selects a processing by said third means when a counter-measure is not possible even when the frame rate of the image data other than the image data from which the event is detected is changed.
1 Assignment
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Accused Products
Abstract
In a video recorder/player that increases a frame rate for only a channel in which an event occurs in images captured by a plurality of cameras and which performs event analysis with higher accuracy within limited processing resources and limited storage capacity, the channel in which the event occurs is set as an event CH and normal channels are set as normal CH. When any event occurs, a processing is divided in accordance with a situation at that time into a frame rate changing processing of the event CH, a frame rate changing processing of the normal CH and the event CH and a changing processing that changes the frame rate of the event CH within a possible range.
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Citations
6 Claims
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1. A video recorder/player for acquiring image data from a plurality of cameras and storing the image data in recording media, including:
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a frame switcher for switching said plurality of cameras in a predetermined sequence and acquiring image data from each of said cameras at a predetermined frame rate; an image processor for detecting an event set in advance from said image data acquired from each of said cameras; and frame rate changing means for changing the frame rate of the image date from which the event is detected; said video recorder/player comprising; first means for changing only the frame rate of the image data from which the event is detected, when the event is detected; second means for changing both frame rate of the image data from which the event is detected and frame rate of other image data, when the event is detected; and third means for changing the frame rate of other image data within a range in which a possible obstacle is as small as possible, when the event is detected, and for changing as much the frame rate of the image data from which the event is detected;
wherein;said frame rate changing means selects a processing by said first means when the frame rate of the image data from which the event is detected is changeable, even when the frame rate of the image data other than the image data from which the event is detected is not changed; said frame rate changing means selects a processing by said second means when the image data for which no obstacle occurs even when the frame rate is lowered exists in the image data other than the image data from which the event is detected; and said frame rate changing means selects a processing by said third means when a counter-measure is not possible even when the frame rate of the image data other than the image data from which the event is detected is changed. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification