Apparatus and method for carring out stereoscopic drawing by data conversion from plane polygon to polyhedral

A drawing method and polyhedron technology, applied in the field of three-dimensional drawing, can solve problems such as large amount of calculation and slow drawing speed

Inactive Publication Date: 2002-05-22
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, operations such as the above-mentioned object coordinate rotation pro

Method used

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  • Apparatus and method for carring out stereoscopic drawing by data conversion from plane polygon to polyhedral
  • Apparatus and method for carring out stereoscopic drawing by data conversion from plane polygon to polyhedral
  • Apparatus and method for carring out stereoscopic drawing by data conversion from plane polygon to polyhedral

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Embodiment approach 1

[0020] figure 1 is a schematic block diagram of the structure of the stereographic drawing device according to Embodiment 1 of the present invention. The stereographic drawing device includes: a 2D / 3D conversion device 2 capable of converting plane (2D) polygonal data 1 into polyhedral (3D) data 3, and a drawing unit for drawing according to the polyhedral data 3 generated by the 2D / 3D conversion device 2 4.

[0021] The plane polygon data 1 is defined by an X coordinate value and a Y coordinate value, and does not have a Z value indicating depth. The 2D / 3D conversion device 2 substitutes the Y coordinate value of the plane polygon data 1 for the Z coordinate value of the polyhedral data 3 representing depth, and replaces the Y coordinate value of the polyhedral data 3 with "0". At the same time, the X-coordinate value of the planar polygon data 1 is used as the X-coordinate value of the polyhedron data 3 without change.

[0022] figure 2 yes figure 1 An explanatory bl...

Embodiment approach 2

[0031] Figure 4 is a schematic block diagram of the structure of the stereographic drawing device according to Embodiment 2 of the present invention. The three-dimensional drawing device includes: a data reading unit 10 for reading polyhedral data from a recording medium 9 ; and a drawing unit 4 for drawing the polyhedral data read by the data reading unit 10 . In addition, the drawing unit 4 is completely the same as that described in Embodiment 1, and thus will not be further described in detail.

[0032] The 2D / 3D conversion unit 2 converts the planar polygon data 1 into polyhedron data 3 and records the data 3 on the recording medium 9 . The recording medium 9 includes CD-ROM (Compact Disc-Read Only Memory), magneto-optical disk, memory card and other media. The data reading unit 10 is a mechanism for reading polyhedron data from the recording medium 9, for example, if the recording medium 9 is a CD-ROM, it corresponds to a CD-ROM drive. Needless to say, the recording ...

Embodiment approach 3

[0035] Figure 5is a schematic block diagram of the structure of the stereographic drawing device according to Embodiment 3 of the present invention. The three-dimensional drawing device comprises: a data reading unit 10, which is used to read the plane polygon data 1 from the recording medium 9; a 2D / 3D conversion unit 2, which is used to convert the plane polygon data 1 read by the data reading unit 10 into The polyhedron data 3 ; the drawing unit 4 is used to draw the polyhedron according to the polyhedron data 3 . In addition, the drawing unit 4 of the present embodiment is completely the same as the description of the first embodiment, so no further detailed description is given.

[0036] The 2D / 3D conversion unit 2 converts the planar polygon data 1 read by the data reading unit 10 into polyhedron data 3 , and outputs the data 3 to the drawing unit 4 . The recording medium 9 includes media such as CD-ROM, magneto-optical disk, and memory card. The data reading unit 10...

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Abstract

The 2D/3D converting unit converts two-dimensional (2D) polygon data to three-dimensional (3D) polygon data by substituting an X-coordinate value of the 2D polygon data for an X-coordinate value of the 3D polygon data, a Y-coordinate value of the 2D polygon data for a Z-coordinate value of the 3D polygon data, and a prescribed value for a Y-coordinate value of the 3D polygon data. The drawing unit draws three-dimensional graphics according to the 3D polygon data generated by the 2D/3D converting unit. Since the 2D/3D converting unit generates the 3D polygon data from the 2D polygon data solely by simple substitutions of the coordinate values, complicated operations are unnecessary for generation of the 3D polygon data. Thus, the three-dimensional graphics drawing apparatus is able to draw the three-dimensional graphics at high speed.

Description

technical field [0001] The present invention relates to three-dimensional drawing technology, specifically, the content of the present invention relates to: a device and method for three-dimensional drawing through data conversion from plane polygons to polyhedrons, and a recording medium for polyhedron data. Background technique [0002] Recently, in order to output realistic and fine-grained images on automotive driving systems and other similar systems, stereographic drawing devices capable of high-speed processing of stereoscopic images have been increasingly used. On traditional planar drawing equipment, planar graphic data without depth Z value information is used. Therefore, when a stereographic drawing device draws a three-dimensional figure using the planar figure data adopted by a conventional planar drawing device, when performing a bird's-eye view Figure 1 Before the oblique projection like this, operations such as coordinate rotation of the object to be drawn m...

Claims

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Application Information

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IPC IPC(8): G06T11/60G06T15/00G06T17/00G06T17/10
CPCG06T17/10
Inventor 森胁升平
Owner MITSUBISHI ELECTRIC CORP
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