Drawing device and drawing method

Abstract

Provided is a drawing device in which when a filtering operation is performed, it is not necessary to consider the drawing sequence of a body of a figure and a shape of a shadow, and an increase in the number of arithmetic operations does not occur. The drawing device (600) comprises a rasterization result storage unit (603) which stores therein original image data including pixel position information of an original image; a rasterization unit (602) which generates the original image data and writes the same in the rasterization result storage unit (603); a to-be-filtered pixel judgment unit (604) which reads out the original image data and judges whether or not the filtering operation is necessary for each pixel, using the pixel position information; a filtering unit (606) which carries out the filtering operation in accordance with the judgment regarding the necessity of the filtering operation and generates filtering data; a drawing unit (607) which draws by combining the original image data of the pixels which constitute the original image, among the pixels which have been judged to be not filtered and the filtering data of the pixels which have been judged to be filtered.

Description

technical field [0001] The present invention relates to various graphics rendering technologies such as user IF rendering of digital consumer equipment, and more particularly, to a rendering device and rendering method for performing filter processing on an image of a rendering object. Background technique [0002] In recent years, there has been an increasing demand for high designability and high visibility of character drawing on devices. In addition, the so-called "drop shadow" method is a well-known method for drastically improving the design and visibility of letter drawing. [0003] Drop shadow refers to a method of drawing virtual shadows on the main body of graphics to give users the impression that graphics seem to appear. For example, Figure 1A as well as Figure 1B It is an example of an IF (Interface: Interface) screen in a TV. In this example, a menu is displayed superimposed on the video 105 on the TV screen in order for the user to select a playback funct...

AI Technical Summary

Problems solved by technology

[0033] As described above, the conventional rendering device 300 has a problem that the amount of computation becomes huge when performing filtering processing, and the rendering should be performed in consideration of the shadow shape and the drawing order of the figure main body.

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