ENCODING METHOD OF LOCAL HYBRID PATTERN METHOD AND APPARATUS OF HYBRID BACKGROUND MODELING USING THEREOF

摘要

The present invention relates to a method of encoding an edge pixel and a background modeling method and apparatus using the method. A method for dividing an image frame into a boundary region and an inner region includes extracting a candidate edge pixel from the image frame using a gradient magnitude calculated by applying an edge operator, Calculating an edge score of the neighboring pixel using a gradient magnitude and a gradient direction of neighboring pixels adjacent to the neighboring pixel, selecting n neighboring pixels in descending order of the edge score, determining whether an edge score of the n neighboring pixels satisfies a predetermined boundary region condition, and if the boundary region condition is satisfied as a result of the determination, setting the candidate edge pixel as a boundary region do. According to the present invention, the shape information formed by the edge pixels of the boundary area with the surrounding edge is encoded, thereby enhancing the discrimination power between the background and the foreground.