Foreground depth of field position identification device and method for virtual studio system

Abstract

The present invention provides a recognition device and a method for the foreground depth position in a virtual broadcast studio system. The device comprises an assistant video camera arranged in a suitable position of the broadcast studio blue box and a real time image processing device, the assistant video camera output the image captured front the foreground of the blue box, the real time image processing device collects the image in a field frequency speed and processes the image, the characteristic data of the image is abstracted and then calculated and transferred, the location coordinate parameter of the foreground anchorperson or and object can be received, the device output the location coordinate parameter of the foreground to the three-dimensional color equipment of the virtual broadcast studio, the three-dimensional virtual scene and the depth position relationship of the real foreground can be matched with no seam after an equation matrix calculating, and the real foreground is merged into a suitable position of the three-dimensional virtual scene space, and reflects a correct occlusion relationship of the three-dimensional virtual scene.

Description

technical field [0001] The present invention relates to the foreground depth-of-field position recognition technology in a virtual studio system, and specifically relates to the use of an auxiliary camera in a virtual studio system to carry out non-contact tracking and positioning of the foreground, that is, a program host or an object, to determine the foreground depth of field and positional relationship recognition Devices and methods. Background technique [0002] After nearly ten years of development, the virtual studio technology has made great progress, and now it is gradually entering the application stage, but as one of the key technologies in the virtual studio system (host or object in the blue box) the moving position parameters As for the measurement and depth of field position recognition technology from the presenter to the camera, only a foreign manufacturer has introduced a presenter depth of field position recognition system based on infrared recognition, a...

AI Technical Summary

Problems solved by technology

The advantage of this solution is that it is non-contact tracking and easy to use; the disadvantage is very obvious, and it has restrictions on the host-need to install an infrared emission source on the host, so the dress, movement of the host (cannot turn around, otherwise The infrared emission source will be captured by the foreground camera and affect the quality of the program, and due to the existence of the thickness of the human body, it will affect the measurement accuracy of the depth of field when turning around), etc.; in order to ensure that the infrared camera can accurately capture the infrared source, the number of cameras, There are many requirements for the installation position and posture, the size of the blue box studio, the position of the host, the way of movement and posture, etc., because any object can emit infrared rays of different bands at any temperature, and the equivalent of infrared rays varies with the temperature It is also different from the wave band, so the system is greatly affected by ambient light and heat light sources. In addition, there are many heat light sources in the studio, so the system is unstable and the accuracy will also be affected.

[0004] In view of the above reasons, coupled with the high cost, it is actually difficult to apply the host depth of field position recognition system using infrared recognition, which also seriously restricts the function and market promotion of the virtual studio system

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