Patent ID: 8666152
Filing Date: 2014-03-04
Classification: G06K

Abstract:
1. A method for video frame spatio-color descriptor generation, the method comprising: determining a region of interest (ROI) within an active region of a video frame; partitioning pixels in the ROI into multiple color groups; subdividing the ROI into multiple subregions; constructing a multiple dimension spatio-color descriptor for the active region by accumulating in the ROI weighted pixel intensities in each color group of the multiple color groups within each subregion of the multiple subregions; determining median pixel values of chrominance components of a YUV color representation for each pixel of each subregion; determining the multiple color groups and partial weighting values within a limit range based on the median pixel values; and determining weighting values based on a multiplicative combination of the partial weighting values, wherein the weighting values are assigned to color bins associated with the multiple color groups and are used to calculate the weighted pixel intensities.