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Method and device for color key synthesis in virtual sports system

A virtual sports system and chroma key technology, applied in the field of TV program production, can solve problems such as it is difficult to achieve the combination of virtual and real

Inactive Publication Date: 2015-02-18
CHINA DIGITAL VIDEO BEIJING
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0003] In the prior art, chroma key synthesis usually simply superimposes the foreground image collected by the camera and the 3D virtual scene generated by the computer, that is, the display of the synthesized picture only has two layers of the foreground image and the 3D scene. However, in the live broadcast of the virtual sports system In the screen, it is often necessary to place a virtual 3D scene between two layers of foreground images. For example, it needs to be displayed that athletes and referees are on virtual objects, and these virtual objects are on grass or water. The existing technology is difficult to achieve the effect of this combination of virtual and real

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  • Method and device for color key synthesis in virtual sports system

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Embodiment Construction

[0027] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The embodiment of the present invention is mainly applied in the virtual sports technology further developed based on the virtual studio technology. Virtual sports technology is to superimpose static or animated 3D images on the screen of live sports competition programs. No matter whether the camera is moving or not, the graphics can be fixed at a certain position, making it visually feel that these 3D graphics are part of the live broadcast. The virtual sports system has a live event tracking function, which can display the actual distance, height and speed in grass, track and field, football field, snow, water or 3D space. Advertisements are displayed and new or animated TV commercials can be overlaid on top of actual c...

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Abstract

The invention discloses a method for color key synthesis in a virtual sports system, including the following steps: receiving foreground signals collected by a video camera and virtual three-dimensional graphic data generated; conducting hybrid output of the corresponding virtual three-dimensional graphic data and the corresponding foreground signals; taking hybrid output signals as the background of color keys; and conducting synthetic output by taking the corresponding foreground signals as the foreground of the color keys. The method and the device can meet the live broadcast requirement of current sports events and achieve better virtual and real combination.

Description

technical field [0001] The invention relates to the technical field of television program production, in particular to a color key synthesis method in a virtual sports system and a color key synthesis device in a virtual sports system. Background technique [0002] The virtual sports system is developed from the virtual studio technology, which belongs to a very important branch of the virtual studio technology. Virtual studio is a unique TV program production technology developed in recent years. Its essence is to digitally synthesize the virtual 3D model made by the computer and the moving images of the objects captured by the camera in real time, so that the object images and the virtual background can change synchronously, so as to achieve the fusion of the two to obtain a perfect composite picture. The virtual studio technology is based on the traditional chroma keying technology, making full use of computer 3D graphics technology and video synthesis technology, accord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/265H04N5/272H04N13/00
Inventor 马菲莹
Owner CHINA DIGITAL VIDEO BEIJING
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