Display method and display device for three-dimensional graphic elements in two-dimensional graph-text editing and playing system

Abstract

The invention discloses a display method and a display device for three-dimensional graphic elements in a two-dimensional graph-text editing and playing system. The method comprises the following steps of: performing visual editing aiming at the three-dimensional graphic elements; calculating the position information of the three-dimensional graphic elements in a two-dimensional scene; and rendering the three-dimensional graphic elements. In the embodiment of the invention, a GPU (graphic processing unit) acceleration engine is utilized, so that a general display card is incompetent of rapid rendering for the three-dimensional graphic elements; and simultaneously, a cache scheme is adopted, so as to solve the influence on the real-time performance of editing and playing caused by the slow memory interaction speed of the general display card.

Description

technical field [0001] The invention relates to TV program production and broadcasting technology in the field of radio and television, in particular to a method and device for displaying three-dimensional graphic elements in a two-dimensional graphic-text editing and broadcasting system. Background technique [0002] With the continuous improvement of user needs in the broadcasting and television industry, the requirements for the effect of graphic subtitles are getting higher and higher. Many manufacturers in the market have provided 3D graphic editing and broadcasting systems, such as "True 3D subtitle machine". The technical requirements are : Based on the three-dimensional space, it can perform operations on three-dimensional primitives, such as rotation, zooming, and translation, and supports the display mode of three-dimensional depth effects. The type of graphics card hardware that can be quickly copied by the system memory is used to obtain the rendering results of ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of user needs in the broadcasting and television industry, the requirements for the effect of graphic subtitles are getting higher and higher. Many manufacturers in the market have provided 3D graphic editing and broadcasting systems, such as "True 3D subtitle machine". The technical requirements are : Based on the three-dimensional space, it can perform operations on three-dimensional primitives, such as rotation, zooming, and translation, and supports the display mode of three-dimensional depth effects. The type of graphics card hardware that can be quickly copied by the system memory to obtain the rendering results of multiple primitives in the entire scene, so the requirements for the graphics card are relatively high, and the selection of product accessories will be limited by the hardware market

However, due to factors such as product prices, user habits, and program style design, there are still a large number of users who use 2D graphics and text editing and broadcasting systems to complete their daily work, and at the same time, there is a certain demand for 3D graphic elements

Such users are limited by the product hardware (mainly the graphics card), the speed of copying from the graphics card memory to the computer system memory is very slow, and cannot support real-time editing and broadcasting of true 3D full scenes, so a new technology is urgently needed to solve the above problems

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