Rapid shake detection using a cascade of quad-tree motion detectors

摘要

#$%^&*AU2013260753A120150611.pdf#####- 35 ABSTRACT RAPID SHAKE DETECTION USING A CASCADE OF QUAD-TREE MOTION DETECTORS A method of determining stability of a camera (127) comprises capturing an image (320) with the camera and then (A) determining (331) a magnitude of motion for each region of a current sub-division (NxN) of the image. A step of (B) then determines a number of the magnitudes of motion not larger than a magnitude threshold (Ti) associated with the current sub-division, and where the determined number (N) is greater than or equal to a region threshold associated with the number of regions in the current sub-division, (i) determining the camera to be stable (334), or otherwise (ii) dividing the current subdivision of the image into a further sub-division and repeating steps (A) and (B) upon the further sub-division. A069472 1 P092012 aneci Indin