METHOD, DEVICE, AND SYSTEM FOR PRE-PROCESSING VIDEO STREAM FOR SUBSEQUENT MOTION DETECTION PROCESSING

摘要

PROBLEM TO BE SOLVED: To pre-process a video stream for subsequent motion detection processing.SOLUTION: The method comprises: receiving a video stream of images, where each image in the video stream is represented by a first plurality of bits; comparing, for each image in the video stream, the image to at least one previous image in the video stream so as to identify pixels where the image differs from the at least one previous image in the video stream; enhancing the video stream of images by enhancing the image in those pixels where the image differs from the at least one previous image in the video stream; and converting the enhanced images so as to produce a converted video stream of images for subsequent motion detection processing, where each image in the converted video stream is represented by a second plurality of bits being lower than the first plurality of bits.SELECTED DRAWING: Figure 3