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Virtual and real lighting fusion method based on fish-eye lens

A technology of fisheye lens and fusion method, which is applied in 3D image processing, image data processing, instruments, etc., can solve a large number of offline computing problems, and achieve the effect of improving real-time performance, efficiency and accuracy

Active Publication Date: 2015-07-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Although this type of method can achieve more effective illumination estimation through online calculations, its disadvantage is that it requires a large amount of offline calculations.

Method used

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  • Virtual and real lighting fusion method based on fish-eye lens
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  • Virtual and real lighting fusion method based on fish-eye lens

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Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] A method for fusion of virtual and real light based on a fisheye lens in the present invention, such as figure 2 shown, including the following steps:

[0026] Step 1, in the real scene, place a fisheye lens camera at the position where the virtual object will be placed in the future; wherein, the hemispherical shooting space of the camera includes all light sources in the real scene; as figure 1 As shown, the center of the fisheye lens is the origin O, passing through the origin O and along the direction of the fisheye lens is the Z axis; the plane XOY passing through the origin and perpendicular to the Z axis is the plane where the image plane of the fisheye lens is located;

[0027] In the present invention, in order to ensure the accuracy of light source estimation in the real scene and reduce the amount of computation, the global world coordi...

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Abstract

The invention discloses a virtual and real lighting fusion method based on a fish-eye lens. The method mainly includes the following steps that firstly, a fish-eye lens camera is placed in the position of a virtual object in scene space and the real-time dynamic lighting environment in the scene is photographed through the fish-eye lens camera; then, the light source direction in a real scene is calculated through fish-eye lens images via image processing, the fish-eye lens images are converted into YUV space, and the light source intensity is calculated according to a light source intensity calculation formula; finally, calculated light source information is used, the virtual object is rendered faster by the adoption of a GPU, real-time augmented reality application with real scene lighting is achieved, and rapid and efficient scene lighting acquisition is achieved.

Description

technical field [0001] The invention relates to the technical field of computer image processing and augmented reality, in particular to a method for fusion of virtual and real light based on a fisheye lens. Background technique [0002] Augmented reality technology superimposes and displays computer-generated information such as virtual three-dimensional objects, videos, texts, and pictures into real scenes in real time, and realizes natural human-computer interaction through virtual-real fusion. The industry has broad application prospects. The highly realistic augmented reality effect is mainly reflected in three aspects: consistent geometry, consistent lighting and consistent time. Geometric consistency means that the virtual object generated by the computer should maintain an accurate and stable positional relationship with the real object; lighting consistency means that the virtual object should have a correct lighting matching relationship with the real environment;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00G06T15/50
Inventor 刘越刘万奎闫达远常军翁冬冬
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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