Plotting device and plotting method

A technology for drawing units and displaying information, applied in processor architecture/configuration, image data processing, cathode ray tube indicators, etc., which can solve problems such as limited number of polygons and difficult display

Inactive Publication Date: 2008-01-30
SHINSEDAI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when displaying a three-dimensional image using a line buffer, it is difficult to display a high-quality image that satisfies viewers due to the limited number of polygons that can be drawn due to the rendering capabilities of conventional image generation devices.

Method used

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  • Plotting device and plotting method
  • Plotting device and plotting method
  • Plotting device and plotting method

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Embodiment approach

[0075] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference signs. "·" in mathematical formula means multiplication.

[0076] First, the principle of rendering processing used for three-dimensional image display according to the embodiment of the present invention will be described. In the present embodiment, sorting (also referred to as "Y sorting" in some cases) processing is performed by a Y sorting unit (hereinafter referred to as "YSU") 19 described later as preprocessing of the rendering process. The objects to be sorted are the elements of the sequence of structures. A structure sequence is a polygon structure sequence (hereinafter referred to as a "polygon structure sequence"), which is a polygonal graphic element representing the shape of each surface of a three-dimensional solid projected on a two-dimensional space, and a parallel rectan...

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Abstract

A YSU (19) sorts structure instances #0 to #7 in order that the polygons #0 to #7 corresponding thereto are arranged in ascending order of the minimum Y-coordinates thereof. An RPU (9) sequentially reads the structure instances #0 to #7 sorted by the YSU (19), and performs the drawing process of corresponding polygons on the basis of the structure instances as read.

Description

technical field [0001] The present invention relates to a rendering device capable of displaying high-quality three-dimensional images without using a frame buffer (Frame Buffer) and related technologies. Background technique [0002] Conventionally, when displaying a three-dimensional image, a frame buffer capable of rendering image data of one frame or more and a video memory are generally installed on an image generating device (Japanese Patent Laid-Open No. 6-348861, Japanese Patent Laid-Open No. 7-282270) . [0003] However, in order to implement a frame buffer or the like in an image generating device, a memory having a capacity capable of storing at least one entire image is essential, and the cost becomes high. In order to display a high-quality three-dimensional image, if the double buffer method is adopted, a memory capable of storing at least two frame buffers is required, which further increases the cost. [0004] On the other hand, when displaying two-dimensio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00G06T15/40G09G5/00G09G5/36G09G5/377G09G5/38G09G5/395G09G5/397G09G5/399
CPCG06T11/40G06T15/10G06T1/20
Inventor 加藤周平佐野高一宇佐美幸一
Owner SHINSEDAI KK
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