Method and apparatus for controlling a lighting fixture based on motion detection and related lighting fixture
AssigneeHimax Imaging Limited
InventorsWei-Chieh Yang, Po-Chang Chen, Yuan-Chih Peng
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Abstract
A method of controlling a lighting fixture based on motion detection includes: receiving a plurality of captured image frames; obtaining a plurality of resampled image frames by resampling the captured image frames according to regional characteristics of the resampled image frames; dynamically adjusting a sensitivity for motion detection according to the regional characteristics of the resampled image frames; performing motion detection on the resampled image frames according to the sensitivity; and controlling the lighting fixture according to a result of the motion detection.
Claims17
A method of controlling a lighting fixture based on motion detection, comprising:
- receiving a plurality of captured image frames;
- determining a region of interest (ROI) in each of the captured image frames, comprising:
- removing an area from each of the captured image frames, where the area corresponds to a part of a scene that is not illuminated by the lighting fixture;
- obtaining a plurality of resampled image frames by resampling the captured image frames according to regional characteristics of the resampled image frames, comprising:
- resampling the ROI in each of the capture image frames to obtain the resampled image frames;
- dynamically adjusting a sensitivity for motion detection according to the regional characteristics of the resampled image frames;
- performing motion detection on the resampled image frames according to the sensitivity;
- and
- controlling the lighting fixture according to a result of the motion detection.
3-4 (canceled)
An apparatus of controlling a lighting fixture based on motion detection, comprising:
- an image resampling unit, arranged to receive a plurality of captured image frames and obtain a plurality of resampled image frame by resampling the captured image frames according to regional characteristics of the resampled image frames, wherein the image resampling unit is further arranged to determine a region of interest (ROI) in each of the captured image frames and resample the ROI in each of the captured image frames to obtain the resampled image frames;
- and the image resampling unit removes an area from each of the captured image frames when determining the ROI, where the area corresponds to a part of a scene that is not illuminated by the lighting fixture;
- a motion detection unit, coupled to the image resampling unit, arranged to dynamically adjust a sensitivity for motion detection according to the regional characteristics of the resampled image frames and perform motion detection on the resampled image frames according to the sensitivity;
- and
- a lighting control unit is coupled to the motion detection unit and arranged to control the lighting fixture according to a result of the motion detection.
12-13. (canceled)
A lighting fixture controlled based on motion detection, comprising:
- a light source;
- an image resampling unit, arranged to receive a plurality of captured image frames and obtain a plurality of resampled image frames by resampling the captured image frames according to regional characteristics of the resampled image frames, wherein the image resampling unit is further arranged to determine a region of interest (ROI) in each of the captured image frames and resample the ROI in each of the captured image frames to obtain the resampled image frames;
- and the image resampling unit removes an area from each of the captured image frames when determining the ROI, where the area corresponds to a part of a scene that is not illuminated by the lighting fixture;
- a motion detection unit, coupled to the image resampling unit, arranged to dynamically adjust a sensitivity for motion detection according to the regional characteristics of the resampled image frames and perform motion detection on the resampled image frames according to the sensitivity;
- and
- a lighting control unit is coupled to the motion detection unit and arranged to control brightness of the light source according to a result of the motion detection.
Dependencies are inferred from the claim text.