OpenSceneGraph-based three dimensional animation manufacturing method

Abstract

The present invention discloses an OpenSceneGraph-based three dimensional animation manufacturing method. The method simulates the non main body target animation in a scene by controlling the regular geometric motion along a horizontal direction and a vertical direction of a two-dimensional picture in a three dimensional scene, and concretely comprises an original picture preprocessing step, a subgraph creation step, an advertising board addition step, a scene data updating step and a scene drawing step. According to the present invention, the preprocessing is carried out on a picture to remove the background, thereby obtaining a target picture with a transparent channel; in each frame, the corresponding relation of the texture coordinates and the vertexes is changed, thereby realizing a texture animation effect; by utilizing an advertising board technology, the orientation of the picture is changed automatically at the visual angle change, so that the picture always faces a screen, and the visual authenticity is improved; by utilizing the scene data updating step, each frame of animation data is updated; by utilizing the drawing step, the scene data is obtained, and each frame of scene is drawn. The method provided by the present invention enables the work of modeling and designing the motion of a fine model to be reduced, and enables the manufacturing difficulty and the manufacturing cost of the three dimensional animation to be reduced.

Description

technical field [0001] The invention belongs to the technical field of scene graph simulation, and more specifically relates to a three-dimensional animation production method based on OpenSceneGraph. Background technique [0002] OpenSceneGraph (OSG) is an open-source high-performance 3D image rendering engine released free of charge based on the modified LGPL protocol (OSGPL). It is widely used in visual simulation, games, virtual reality, scientific visualization and modeling and other fields. It has become an industry standard OpenGL is the underlying platform, written using portable ANSIC++; it solves the problem of high development costs and unfavorable product promotion using commercial engines such as OpenGVS and Vega, which is more meaningful from a practical point of view, and the effect is no less than that of Commercial visual rendering software. [0003] Virtual scene technology is an important branch of virtual simulation scene technology, and its components m...

AI Technical Summary

Problems solved by technology

In some scenes, a part of the animation plays an important role in making the scene more realistic and beautiful, but this part of the animation effect is mainly for visual needs, and does not require precision; in this case, using skeletal animation will consumes a lot of resources

[0004] Taking the motion animation of seabed fish as an example, swimming fish and fluctuating seaweed are essential scene members. If skeletal animation is used to realize it, it is necessary to make a large number of 3D models and calculate the swimming of fish bodies. And a large number of fish swimming is not a simple translation, it also has the twisting of the fish body; but most of them are not the main target in the scene, but modify the whole scene to make it more realistic; in order to achieve The real animation effect uses skeletal animation, which has a huge computational workload and will consume a lot of resources

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