The invention relates to computer vision, in particular detection and classification of objects captured in a video stream of images. The invention provides a memory efficient method of storing images that have been pre-processed for use in object detection. The method is based on using histograms of orientation. The invention also includes methods for training and using weak classifiers that use this pre-processing of images. A first weak classifier uses the total count of two orientation values in a histogram as an index to a two dimensional confidence table to determine a confidence value. The second weak classifier projects one or more total counts of orientation values in a histogram into a scalar value that is then used in a one dimensional confidence map to determine a confidence value. Aspects of the invention include methods, computer systems and software.
申请公布号
WO2010138988(A1)
申请公布日期
2010.12.09
申请号
WO2009AU00699
申请日期
2009.06.03
申请人
NATIONAL ICT AUSTRALIA LIMITED;OVERETT, GARY;PETERSSON, LARS;ANDERSSON, LARS;PETTERSSON, NIKLAS