Abstract: Setting input unit 12 receives from a user an input concerning setting of conditions for selecting goods for topics of display, and registers the inputted setting information in a setting information storage 22. Goods selector 14 selects goods for topics of display on the basis of sales information recorded in a sales information storage 24 and the setting information stored in the setting information storage 22. Display share distributor 16 respectively distributes shares of display differently to the selected goods. Screen data output unit 18 configures screen data to be displayed on a display device 32 in accordance with distribution of the shares of display, and outputs the screen data to the display device 32.

Abstract: Upon chromakey processing, 4×4 transformation matrix is provided through which a backing color selected is transformed to the original point and monochrome color is transformed to vertically distribute at a spot away from the original point along an axis. Matrix multiplication comprising only addition and multiplication is applied to a foreground image data signal to generate a masked output image and a color-processed foreground output image without requiring complex arithmetic operations.

Abstract: Upon chromakey processing, 4×4 transformation matrix is provided through which a backing color selected is transformed to the original point and monochrome color is transformed to vertically distribute at a spot away from the original point along an axis. Matrix multiplication comprising only addition and multiplication is applied to a foreground image data signal to generate a masked output image and a color-processed foreground output image without requiring complex arithmetic operations.

Abstract: Inner and outer hexoctahedrons respectively showing complete background and complete background are defined by combining triangular pyramids centered on a background representative color on RGB space. Key value is calculated by changing identification function parameters depending upon which of triangular pyramids constituting the hexoctahedron each pixel of the image belongs to. As a result, an improved foreground image for composite is obtained.