Patent ID: 8798320
Filing Date: 2014-08-05
Classification: G06K,G06T

Abstract:
1. A method of processing a sequence of images of a scene, the method comprising: tracking a region of interest in the sequence of images using a Self Adaptive Discriminant filter; selecting a particular image in the sequence; selecting a set of images from the sequence, the set of images containing one or more images that precede the particular image in the sequence of images; and for each pixel in the region of interest in the particular image, determining a value for one or more parameters; said parameters comprising red-intensity, green-intensity and blue-intensity of a pixel; for each pixel in the region of interest of each image in the set of images, determining a value for the one or more parameters; and comparing a function of the determined values for the region of interest in the particular image to a further function of the determined values for the regions of interest in the images in the set of images said comparing of a function of the determined values for the region of interest in the particular image to a further function of the determined values for the regions of interest in the images in the set of images, comprises: for the particular image, determining a histogram of the determined values for the region of interest in that image; for each of the images in the set of images, determining a histogram of the determined values for the region of interest in that image; determining a histogram that is a function of the histograms determined for each of the images in the set of images; and determining a value of a parameter that is indicative of a difference between the histogram determined for the particular image and the histogram that is a function of the histograms determined for each of the images in the set of images.