System and method for adaptively defining a region of interest for motion analysis in digital video
AssigneeSamsung Electronics Co., Ltd.
InventorsYeong-Taeg Kim, Ning Xu
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Abstract
A system and method for adaptively defining a region of interest for motion analysis in digital video is disclosed. In one embodiment, a method of detecting a gesture is disclosed which comprises receiving a video sequence comprising a plurality of frames, determining a region of interest which excludes a portion of the frame, and detecting the gesture within the region of interest.
Claims19
A method detecting a gesture, the method comprising:
- receiving a video sequence having a gesture and a plurality of frames;
- determining a motion history image based on the video sequence;
- determining a region of interest relative to the gesture for at least one of the frames, wherein the region of interest excludes a portion of each of a subset of the frames;
- modifying the motion history image based on the region of interest;
- and
- detecting the gesture within the region of interest and the motion history image as modified;
- and
- determining the region of interest as a default region of interest when a difference between a current time and a last detection time is greater than a threshold and the detection of the gesture is false.
A device comprising:
- a motion history image computation module configured to receive a video sequence having a gesture and a plurality of frames and to determine a motion history image based on the video sequence;
- a region of interest module configured to determine a region of interest relative to the gesture, wherein the region of interest excludes a portion of each of a subset of the frames;
- an adaptive motion history image module configured to modify the motion history image based on the region of interest;
- a gesture detection module configured to detect the gesture within the region of interest and the motion history image as modified;
- and
- wherein:
- the region of interest module is for determining the region of interest as a default region of interest when a difference between a current time and a last detection time is greater than a threshold and the detection of the gesture is false.
A method executed by code of a programmable storage device which, when executed, causes a processor to perform a method of detecting a gesture, the method comprising:
- receiving a video sequence having a gesture and a plurality of frames;
- determining a motion history image based on the video sequence;
- determining a region of interest relative to the gesture, wherein the region of interest excludes a portion of each of a subset of the frames
- modifying the motion history image based on the region of interest;
- detecting the gesture within the region of interest and the motion history image as modified;
- and
- determining the region of interest as a default region of interest when a difference between a current time and a last detection time is greater than a threshold and the detection of the gesture is false.
Dependencies are inferred from the claim text.