3D Perspective Transformation Method for 2D Graphics

Abstract

The invention discloses a three-dimensional perspective transforming method of two-dimensional graphics, which comprises the following steps of: skeleton drawing; node mapping: mapping nodes on a two-dimensional molding graphic onto a skeleton according to the corresponding relation between the two-dimensional molding graphic and the skeleton as well as distances and orientation; skeleton adjustment: carrying out the three-shaft rotation of the skeleton by respectively passing around a rotating point and a rotating shaft, and carrying out three-dimensional adjustment; node back-projection: back-projecting the nodes into a three-dimensional space according to the orientation parameters of the nodes projected onto the skeleton by adopting a reverse calculating method, so as to obtain an adjusted three-dimensional modeling graphic object; and projection mapping of a three-dimensional modeling graphic: projecting the three-dimensional molding graphic of the three-dimensional space onto an appointed plane according to the position of a view point to obtain a two-dimensional perspective effect graphic. Through the mode, by adopting the three-dimensional perspective transforming method of the two-dimensional graphics provided by the invention, the efficiency of perspective adjustment in the producing process of two-dimensional cartoons is effectively improved, and the quality of the cartoons is effectively ensured while the cost is saved.

Description

Technical field [0001] The invention involves a graphic processing method, especially the three -dimensional transformation method of a two -dimensional graphic. Background technique [0002] The two -dimensional animation is a process of simulation and exaggeration to the real world, and it is inseparable from the form of three -dimensional expression.Among them, three -dimensional perspective is the basis of two -dimensional animation production, and it is the difficulty of most animated producers in the process of animation production. As the requirements of various industries have continued to improve computer -aided design, the two -dimensional data is used to simulate 3D dataObtaining three -dimensional information has been more and more research. [0003] At present, the shortcomings of the existing two -dimensional graphic three -dimensional vision adjustment schemes are mainly the following points: 1. The traditional hand -painted scheme rely on manually to complete the ...

AI Technical Summary

Problems solved by technology

[0003] At present, the defects of the existing 3D perspective adjustment schemes for 2D graphics mainly lie in the following points: 1. The traditional hand-painted schemes completely rely on the manual completion of the perspective process, and the drawing effects of different personnel are not the same, the workload is large, the efficiency is low, and Because it only relies on original painters with deep experience, its application is greatly limited

Therefore, in the process of animation production using the traditional process, in order to improve efficiency, the only way to reduce the perspective effect of animation modeling or scenes is to reduce the quality of animation, which is extremely unfavorable for the long-term development of 2D animation

2. Animo's technical solution solves the problem of adjusting the rotation perspective of graphics on the horizontal plane by hand-painting, but because many graphics cannot be projected onto an ellipsoid to obtain three-dimensional depth information, it cannot solve graphics or combinations parallel to the line of sight The three-dimensional perspective adjustment of graphics, such as the rotation of the feet, the waving of the arms, etc., cannot be completed through the perspective adjustment of Animo, and must be drawn manually

3. Because the two-dimensional graphics lack three-dimensional information, Animo's solution only obtains the overall depth information by projecting the two-dimensional graphics onto the ellipsoidal surface, which does not meet the actual three-dimensional data requirements. When adjusting, there will be deformation, distortion, etc., and even the phenomenon of graphic separation (for example, the eyes are outside the face area after adjustment), so it does not meet the actual animation work requirements.

Images