Three-dimensional perspective transforming method of two-dimensional 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 relates to a graphics processing method, in particular to a three-dimensional perspective transformation method for two-dimensional graphics. Background technique [0002] Two-dimensional animation is a process of simulating and exaggerating the real world, which cannot be separated from three-dimensional forms of expression. Among them, three-dimensional perspective is the basis of two-dimensional animation production, and it is a difficult point for most animators in the process of animation production. With the continuous improvement of computer-aided design requirements in various industries, two-dimensional data is used to simulate three-dimensional data. , to obtain 3D information has been more and more researched. [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 ...

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.

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