Picture data processing system for processing picture data representing foreground and background

摘要

A moving picture data compressing unit compresses picture data representing a moving picture in which a foreground moves in front of a predetermined background. A header adding unit adds a header to the compressed moving picture data obtained through the moving picture data compression unit, the header comprising a color code indicating the color of the predetermined background. A header removing unit removes the header from the compressed moving picture data and the header removing unit then extracts the color code indicating the color of the predetermined background from the header. A moving picture data expanding unit expands the compressed moving picture data, the header added to this data having been removed by the header removing unit. An identification data generating unit receives the moving picture data expanded by the moving picture data expanding means, compares the moving picture data with the color code extracted from the header removed from the moving picture data by the header removing unit, and generates identification data which indicates whether each pixel represented by the moving picture data is a pixel of the foreground or a pixel of the predetermined background.