Method and device for realizing infinite blue box function, electronic device and storage medium

Abstract

The invention relates to a method and a device for realizing an infinite blue box function, an electronic device and a storage medium. The method comprises the following steps: obtaining blue box information; establishing a three-dimensional model according to the blue box information to obtain a blue box model; and performing rendering processing according to the blue box model to obtain a video image. According to the invention, the corresponding three-dimensional model is established according to the actual blue box, the blue box model is rendered to obtain the alpha signal of the blue box area, the alpha signal is output to the image matting synthesizer to achieve the shielding effect, the blue box area is determined in a modeling mode, the infinite blue box area can be established for the blue box in any shape to obtain the 360-degree non-goof effect, and the utilization rate of the blue box area can be increased.

Description

technical field [0001] The invention relates to a virtual studio, and more specifically refers to a method, a device, a computer device and a storage medium for realizing the infinite blue box function. Background technique [0002] As an important means of real-time TV program production, the virtual studio system based on blue box keying technology has been widely used in various TV program productions. The virtual studio system obtains the foreground image by the camera, and obtains the camera through the tracking system The motion parameters of the camera; the graphics workstation generates the background signal and mask signal of the 3D virtual scene in real time according to the motion parameters of the camera; video recording equipment. The virtual studio system can automatically track the camera position, pan, pitch, lens focus and zoom and other parameter changes, and change the 3D virtual scene in real time according to these parameters, so that the change of the ...

AI Technical Summary

Problems solved by technology

[0006] However, the first generation method of the above-mentioned infinite blue box function does not match the size of the real blue box, and can only generate a three-dimensional virtual containment volume according to the viewing range of the camera in the initial posture, so that the blue box outside the viewing range is also regarded as a blue box outside the area

The second generation method of the infinite blue box function generates a patch structure in the complement area of ​​the blue box according to the real size of the blue box to form a geometry. Each surface of the geometry is a plane, and each plane is used as a mask. The signal is the background signal; making this method only suitable for square blue boxes: u-shaped, left L-shaped blue box, right L-shaped blue box

For fan-shaped and irregular-shaped blue boxes, it cannot be matched. In addition, when the camera is panned at a large angle, such as 180 degrees, when it exceeds the area of ​​​​the patch, it will still cause the phenomenon of piercing

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