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Implanted true-three-dimensional stereo rendering method facing to ERDAS Virtual GIS

A three-dimensional and three-dimensional rendering technology, applied in the field of implantable true three-dimensional stereo rendering, can solve the problems of limited stereo display technology, inability to achieve true three-dimensional display, and high cost.

Inactive Publication Date: 2009-09-23
福建省古峰工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the need for professional equipment, the high cost also limits the application of stereoscopic display technology, so the application of stereoscopic display cannot be promoted, and a large number of 3D programs are still displayed using single-channel technology, which lacks stereoscopic effect and loses the three-dimensional program. Stereoscopic display characteristics
At the same time, because stereoscopic display requires special hardware and special programming skills, a large number of programs have not considered the characteristics of stereoscopic display during development, and have not implemented the function of supporting stereoscopic display in the program. Stereoscopic display is not possible on the hardware
These programs occupy the vast majority of the current 3D display programs, and ERDASVirtual GIS has not broken through the above limitations. During the modeling process, users can only see a single-channel perspective 3D, and cannot achieve true 3D stereoscopic display. The best application effect

Method used

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  • Implanted true-three-dimensional stereo rendering method facing to ERDAS Virtual GIS
  • Implanted true-three-dimensional stereo rendering method facing to ERDAS Virtual GIS
  • Implanted true-three-dimensional stereo rendering method facing to ERDAS Virtual GIS

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Experimental program
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Effect test

Embodiment 1

[0058] Such as figure 2 and image 3 As shown, since ERDAS Virtual GIS uses OpenGL API as the three-dimensional rendering API in the modeling stage, this embodiment is based on OpenGL API as the implementation object, and the operating system platform is Windows XP for implementation.

[0059] The interception and monitoring of OpenGL API is developed based on Micorsoft Detours SDK. Detours is a set of development kits provided by Microsoft for API call interception under the Windows platform, which supports all Win32 platforms.

[0060] Such as figure 1 As shown, the implantable true three-dimensional rendering method for ERDAS Virtual GIS software comprises the following steps:

[0061] Step (1) monitor and render data interception for the OpenGL API used by ERDAS Virtual GIS;

[0062] Step (2) using the scene transformation matrix and the projection transformation matrix to reconstruct the rasterized three-dimensional data;

[0063] Step (3) Adaptive screen resolution...

Embodiment 2

[0084] An implantable true three-dimensional rendering method for ERDAS Virtual GIS software, including the interception of the following functions:

[0085] a. Create the function of the 3D display environment, monitor the function, add the system detection function calling the 3DOpenGL API to the monitoring function, obtain the stereoscopic display characteristics of the system, and change the stereoscopic in the originally set display environment according to the corresponding stereoscopic display characteristics Display mode, enable true 3D stereoscopic display support on hardware that supports stereoscopic display, and set flags for red-green stereoscopic display on hardware that does not support stereoscopic display.

[0086] b. Start a frame drawing function, monitor the function, add code to the monitoring function to obtain the viewport size of the current drawing frame, and create a temporary buffer for the stereo pair according to the rendered pixel format.

[0087]...

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Abstract

The invention discloses an implanted true-three-dimensional stereo rendering method facing to ERDAS Virtual GIS, which comprises the following steps: adopting an implanted rendering data intercepting technology between 3D API invocation and display card displaying adopted by the ERDAS Virtual GIS software, capturing original single channel color signals and depth signals, three-dimensional scene transformation matrix and projection transformation matrix; analyzing the information, reconstructing grid three-dimensional data; adaptively transforming the scene to two different viewpoint positions again based on the stereo vision principle to form a binocular vision stereo pair which can be displayed three-dimensionally, driving a display card to stereo-output the binocular vision stereo pair; and performing the true-three-dimensional stereo display and observation by using polarization, red and green, blinking glass, and the like. The invention can realize the true-three-dimensional stereo scene display under the condition of not changing the program and the operation mode of the prior ERDAS Virtual GIS software.

Description

technical field [0001] The invention relates to the technical field of three-dimensional visualization, in particular to an implantable true three-dimensional rendering method for ERDAS Virtual GIS software. Background technique [0002] With the development of computer technology, stereoscopic display has become a commonly used technical means in the fields of environment simulation, simulation training, planning and design, etc., and even began to combine with movies and computer games to produce stereoscopic movies and true 3D games to integrate into people's daily life. As an important spatial data, satellite imagery can produce realistic 3D effects when superimposed with DEM. ERDAS’s Virtual GIS can superimpose various 3D objects on the basis of remote sensing images. It is an important 3D GIS software. . [0003] It is a trend to realize stereoscopic vision in 3D applications. To observe a stereoscopic scene on a single display device, it is necessary to separate the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00G09G5/00
Inventor 闾国年温永宁盛业华吴明光
Owner 福建省古峰工贸有限公司
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