Device and method for pre-depositing information for producing 3-D image self-shading shadow

Abstract

A sphere simulating body is generated in advance, and shading area values and angle values of individual peaks of a 3D object are calculated according to the framework, thus further generating an access value map and a composite radian map. When a self shading shadow of the object is being generated, the latest positions of individual sphere in the sphere simulating body are directly updated, and the information in the map is retrieved again so as to generate a 3D image. As the access value map and the composite radian map are stored in advance, real-time calculation burden can be greatly reduced when the self shading shadow of the dynamical object are needed to be generated.

Description

technical field [0001] The present invention relates to a device and method for pre-calculating and storing information required for generating self-shading shadows of 3D images, and capturing these information to save real-time computing time when generating 3D images. Background technique [0002] With the improvement of multimedia technology and image processing technology, the animation industry has progressed from processing traditional flat images to processing 3D images, making animation more visually realistic. In order to achieve realistic effects, the generation of shadows is an extremely important part. [0003] In order to generate shadows caused by occlusion of certain parts of objects in the animation, there are many known solutions. For example, it is processed by the global illumination algorithm, but it cannot achieve real-time effects. [0004] Ambient occlusion (ambient occlusion) technology provides the information of the model's own occlusion, and perf...

AI Technical Summary

Problems solved by technology

Although the concept of ambient light occlusion technology is simple, it still needs to calculate the visibility of all endpoints on the object in all directions. The amount of calculation required is still very large, and it is also difficult to achieve real-time effects.

[0005] Since the relative position of each part of the dynamic object is constantly changing with time, the shadows produced by it are also constantly changing. The above-mentioned known techniques for generating self-shadowing shadows all have problems that cannot be processed in real time, so they are not Not suitable for shadowing dynamic objects

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