US 6,646,650 B2Granted

Image generating apparatus and image generating program

AssigneeNintendo Co., Ltd.

InventorKeizo Ohta

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Abstract

An image generating apparatus and program capable of realistically displaying an image of a submerged land portion in consideration of water characteristics is provided. In rendering processing, when an object to be rendered is a water surface object, from color data (VR, VG, VB) of an object such as a land already written in the frame buffer, new color data (VR′, VG′, VB′) is generated according to color parameters (αr, αg, αb) predetermined based on the water characteristics. The color parameters are so determined that the ratio of reducing a red color component value VR becomes larger than the ratios of reducing a green color component value VG and a blue color component value VB (αr<αg, αb). Then, by adding the color data (WR, WG, WB) of the water surface object and the new color data at a predetermined ratio with translucent processing, final color data (NR, NG, NB) is generated. Thus, an image realistically representing the submerged land portion can be generated.

Claims7

Dependent claims

An image generating apparatus that generates, in a frame buffer, an image representing an object placed in water as viewed from a water surface in virtual space, said apparatus comprising:

an image storage for storing a water surface image for representing the water surface, and an object image for representing an object existing in said virtual space;
a first renderer for rendering, in said frame buffer, said object image read from said image storage means;
a color information reader for reading, from said frame buffer, pixel-by-pixel color information of said object image corresponding to an area where said water surface image is rendered;
a color information changer for reducing color component values included in the pixel-by-pixel color information read from said color information reader so that a ratio of reducing a red color component value becomes larger than a ratio of reducing a blue color component value and a ratio of reducing a green color component value;
a color information generator for generating new pixel-by-pixel color information by mixing the pixel-by-pixel color information with each of said color component values reduced and pixel-by-pixel color information of said water surface image at a predetermined ratio with translucent processing;
and
a second renderer for re-rendering the new pixel-by-pixel color information generated in said color information generator in said frame buffer.

4 more elements

Dependencies are inferred from the claim text.