Method for deforming smart graph-driven grid image

A technology of image deformation and graphics, applied in image data processing, animation production, instruments, etc., can solve problems such as image deformation and achieve smooth deformation effect

Inactive Publication Date: 2010-11-17
SUN YAT SEN UNIV
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Problems solved by technology

[0005] The present invention proposes a method of using smart graphics as a driving template, mapping the global deformation parameters of the image onto a two-dimensional grid, driving the deformat

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  • Method for deforming smart graph-driven grid image
  • Method for deforming smart graph-driven grid image
  • Method for deforming smart graph-driven grid image

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Embodiment Construction

[0021] Combine below figure 1 , figure 2 and image 3 The present invention is further described.

[0022] The method of the invention transforms the deformation problem of the image into the deformation problem of the corresponding grid M. This method first takes an image I(x) as input, and constructs a quadrilateral mesh M corresponding to the deformed region D with a pixel interval d. For the convenience of processing, the grid is composed of several squares with side length d. The smaller d is selected, the closer M is to the shape of D, but it also increases the calculation amount accordingly. Since the method of the present invention is oriented to the field of animation production, the details of the shape of D are not critical, so a larger value can be selected for d, as long as it properly reflects the required details. The meshing process regards D as an image map on the mesh M, and records the corresponding mapping coordinates of each mesh vertex. Since the v...

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Abstract

The invention relates to a method for deforming a smart graph-driven grid image. In the method, global deformation parameters of the image are mapped to a two-dimensional grid to drive the grid to deform; the grid drives an embedded image of the grid to deform so as to solve the problems of non-accurate image deformations similar to cartoon animation deformations; and a user can quickly acquire an image deformation result through the interaction control of a control point on a smart graph. The method adopts a smart graph-based deformation driving template which has the characteristics of an embedded deformation rule and multi-component coordinative deformation, and can automatically generate appropriate grid driving parameters according to the global deformation parameters so as to generate a grid effect in real time. Besides, by performing cross regulation on different deformation weight coefficients, the method can control the deformation intensity. The method can acquire a two-dimensional grid deformation result of the embedded deformation rule at an interactive real-time speed, and can conveniently and quickly generate a deformation effect of a two-dimensional cartoon animation image by further solving the coordinate mapping and the gray mapping of an image pixel under grid driving.

Description

technical field [0001] The invention relates to digital image deformation technology, in particular to animation modeling creation technology for interactively deforming images depicting two-dimensional animation characters. Background technique [0002] In the current mainstream method of creating cartoon and animation characters, creators need to invest a lot of repetitive work to draw different facial expressions of the same animation characters. The use of deformation technology in computer graphics and image processing can provide a new solution for the expression drawing of animation characters. Applying deformation technology to the original animation shape to change it into an animation character shape with new facial expressions can greatly improve the creation efficiency of cartoon animation works and reduce a lot of repetitive drawing work for creators. For cartoon animation images saved in the form of images, using simple interactive methods to control their def...

Claims

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Application Information

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IPC IPC(8): G06T13/00
Inventor 杜晓荣张永龙立明温佩贤
Owner SUN YAT SEN UNIV
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