Motion detection method with user-adjustable parameters for better detection accuracy
OwnerHsiao-Ping Chen, Cheng-Liang Kaoinventors
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Abstract
A motion detection method based on a detecting system is used to detect a moving object and trigger a corresponding event through a set of consecutive frames. The motion detection method includes comparing duration of the event with a first threshold value for determining whether the event is valid, comparing an interval between two successive events for determining whether the latter of the successive events is combined with the first of the events, and comparing size of the moving object with a predetermined rectangle for determining whether the moving object meets a size limitation of the predetermined rectangle.
Claims24
A motion detection method used by a detecting system for detecting a plurality of moving objects moving inside a scene, the detecting system comprising:
- a frame generator for periodically picturing the scene according to a predetermined period to generate a plurality of image frames;
- and
- a calculating device for comparing successive image frames to detect the moving objects inside the scene and to generate an event corresponding to the moving objects, the event comprising image frames associated with the moving objects;
- the motion detection method comprising:
- comparing a duration of the event with a first threshold value to determine whether the event is valid.
A motion detection method used by a detecting system for detecting moving objects moving inside a scene, the detecting system comprising:
- a frame generator for periodically picturing the scene according to a predetermined period and generating a plurality of image frames;
- and
- a calculating device for comparing successive image frames to detect the moving objects inside the scene and to generate an event corresponding to the moving objects, the event comprising image frames associated with the moving objects;
- the motion detection method comprising:
- detecting a plurality of successful events which comprises a first event and a second event, the first event being generated prior to the second event, an interval separating a termination of the first event and a beginning of the second even;
- and
- comparing the interval with a second threshold value to determine whether the second event is related to the first event for merging the second event into the first event.
A motion detection method used by a detecting system for detecting moving objects moving inside a scene, the detecting system comprising:
- a frame generator for periodically picturing the scene according to a predetermined period to generate a plurality of image frames;
- and
- a calculating device for comparing successive image frames to detect the moving objects inside the scene and to generate an event corresponding to the moving objects, the event comprising image frames associated with the moving objects;
- the motion detection method comprising:
- setting at least a filtering range;
- and
- comparing a size of the moving objects with the filtering range to determine whether the detecting system records an event associated with the moving objects.
The motion detection method of claim 22 wherein if the duration of the event is longer than the first threshold value, the event is valid and is recorded by the detecting system;
- otherwise, the event is not valid and is not recorded by the detecting system.
Dependencies are inferred from the claim text.