OpenGL model transformation-based method and system for acquiring three-dimensional coordinate

A technology of three-dimensional coordinates and three-dimensional models, which is applied in image data processing, instruments, etc., to facilitate editing, speed up processing, and shorten production cycles.

Inactive Publication Date: 2012-10-10
CHINA DIGITAL VIDEO BEIJING
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Problems solved by technology

[0004] Aiming at the existing problems and limitations of the method for establishing a three-dimensional coordinate axis manipulator in the prior art, the technical problem to be solved in the present invention is: solve the problem of an efficient mechanism for calculating the length of a three-dimensional coordinate axis based on OpenGL space transformation technology

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  • OpenGL model transformation-based method and system for acquiring three-dimensional coordinate

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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] Embodiment 1 of the present invention provides a method for obtaining three-dimensional coordinates of OpenGL model transformation, such as figure 1 shown, including the following steps:

[0028] Step S101: receiving anchor point coordinates;

[0029] Receive the anchor point coordinates in the model coordinate system; in this step, collect the anchor point coordinates in the graphics in the model coordinate system used by the user for modelin...

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Abstract

The invention discloses an openGL model transformation-based method and system for acquiring a three-dimensional coordinate. The method comprises the following steps: receiving an anchor coordinate in a coordinate system of an openGL model; according to the anchor coordinate, determining a model three-dimensional coordinate with the anchor as an original point; transforming the model three-dimensional coordinate into a view three-dimensional coordinate under a view coordinate system; receiving a view window size; according to the view window size, determining the three-dimensional coordinate axis length of the view three-dimensional coordinate; and on the basis of the three-dimensional coordinate axis length, displaying the view coordinate to obtain a three-dimensional coordinate in a world coordinate system. Therefore, a problem of high efficient mechanism of three-dimensional coordinate axis length calculation based on an openGL spatial transformation technology, so that it is convenient to edit the three-dimensional model and accelerate a speed of processing on the whole model; and moreover, the manufacturing period of the three-dimensional model can be shortened and usability of the model is improved.

Description

technical field [0001] The invention relates to the field of post-video special effect processing and synthesis software, in particular to the field of radio and television, and in particular to a three-dimensional coordinate acquisition method and system for OpenGL model transformation. Background technique [0002] In order to achieve realistic image synthesis effects in post-video special effects processing and synthesis software, users are often provided with a means of synthesizing images in three-dimensional space, which is generally called a three-dimensional synthesizer. Users can add any number of 3D objects in the 3D synthesizer, such as planes, cubes, spheres, and 3D objects imported from 3D model files, etc., and add material properties, lighting, and effects to these 3D objects. The texture composed of the image can synthesize a realistic three-dimensional scene graph. The key point of the 3D synthesizer is that users can use the mouse to interactively edit 3D ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T19/00
Inventor 许小飞见良
Owner CHINA DIGITAL VIDEO BEIJING
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