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Virtual camera and real camera switching system and method

A technology for virtual cameras and video cameras, applied in the field of digital video and television special effects processing, can solve the problems of inability to shoot virtual scenes, limited field of view, etc., and achieve the effect of making up for limitations, widening the field of view, and improving the degree of freedom

Active Publication Date: 2015-02-11
BEIJING DAYANG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its physical limitations, the possible field of view of the real camera is limited, and it is impossible to capture all parts of the virtual scene

Method used

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  • Virtual camera and real camera switching system and method

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Experimental program
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Embodiment 1

[0028] This embodiment is a system for switching between a virtual camera and a real camera, such as figure 1 shown. This embodiment includes: a real camera connected to a synthetic rendering server, the real camera is connected to a chroma keyer, the synthetic rendering server is connected to a virtual camera controller, and the synthetic rendering server is provided with a real camera A virtual camera connected to a virtual camera controller, the virtual camera is connected to a compositing device, the compositing device is connected to the chroma keyer, and a foreground connected to the compositing device is also provided in the composite rendering server Generation means, background generation means, and output means.

[0029] The composite rendering server is used to render the virtual foreground, virtual background, etc. in the virtual scene into pictures according to the state of the virtual camera, and superimpose and synthesize with the pictures taken by the real cam...

Embodiment 2

[0036] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment about the virtual camera controller. The peripheral device controlled by the virtual camera controller in this embodiment is one of a keyboard, a mouse, a touch screen or a joystick.

[0037] The most convenient way to operate the virtual camera and the real camera is to use the joystick, but in some operations, various virtual keys on the screen can be used to control the virtual camera, such as: the host operates on the touch screen at the scene. Similarly, using the mouse can achieve more convenient display of virtual objects in some cases, such as directly jumping to a specific viewing angle, or letting the camera move along a preset path.

Embodiment 3

[0039] This embodiment is an improvement of the first embodiment, and it is a refinement of the implementation of the virtual camera in the first embodiment. There can be one or more virtual cameras, one of which is the current main virtual camera, and the main virtual camera can be virtualized The designation and change of the camera controller can also be designated and changed by the virtual camera parameter generating device, and the parameters of the main virtual camera are sent to the compositing device for image rendering and compositing.

[0040] In this embodiment, multiple virtual cameras are preset in the virtual space. On the one hand, it can be more smoothly connected with multiple real cameras that may be set in the studio; on the other hand, each virtual camera can use lens parameters with different characteristics, such as There can be wide-angle lenses, ordinary lenses, macro lenses, etc. Each lens has a different rendering effect on the virtual scene, which fu...

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Abstract

The invention relates to a virtual camera and real camera switching system and method. The system comprises a real camera, wherein the real camera is connected with a chroma key device, a synthesis rendering server is connected with a virtual camera controller, a virtual camera parameter generating device connected with the real camera and the virtual camera controller is arranged inside the synthesis rendering server, a virtual camera and the virtual camera parameter generating device are connected with a synthesis device, the synthesis device is connected with the chroma key device, and a foreground generating device, a background generating device and an output device which are connected with the synthesis device are further arranged inside the synthesis rendering server. According to the method, virtual foregrounds, virtual backgrounds and virtual persons are fabricated in field and are fast synthesized, the switching of a field real scene and a virtual scene is realized through the operation of the virtual camera controller to the scene, the limitation of the real camera when the real camera shoots a virtual object is compensated, and the program expressive force of a virtual studio is greatly improved.

Description

technical field [0001] The present invention relates to a system and a method for switching between a virtual camera and a real camera. It is a system and method for computer video image processing, and a system and method for digital video TV special effects processing. Background technique [0002] The virtual studio includes a series of equipment, mainly to implant virtual objects into the real scene captured by the camera to improve the performance of the program. A general virtual studio will include one or more of the following devices: positionable camera equipment, blue box, chroma keyer, virtual rendering server and other equipment. The position of the real camera is obtained through a positionable camera, and the virtual object is placed in the real camera space to realize the effect of synchronous movement of the virtual object and the real camera. The blue box and the chroma keyer can remove unnecessary pictures and only keep specific picture elements, making t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/222H04N5/262H04N5/232
Inventor 骆萧萧张朋云王付生黄一辰
Owner BEIJING DAYANG TECH DEV
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