Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Linear constrained image distortion method based on local coordinates

A technology of local coordinates and image deformation, used in image data processing, animation production, instruments, etc., to achieve a good bending effect

Inactive Publication Date: 2008-10-01
SUN YAT SEN UNIV
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, general non-rigid body transformations (such as bending, irregular deformation, etc.) cannot be simply expressed as vertex linear operations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Linear constrained image distortion method based on local coordinates
  • Linear constrained image distortion method based on local coordinates
  • Linear constrained image distortion method based on local coordinates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] The method of the present invention converts the deformation problem of graphics into the corresponding grid M 0 deformation problem. This method first takes an image I(x) as input, and constructs a deformed region with a pixel interval d D ⊆ I The corresponding quadrilateral domain mesh M 0 . For the convenience of processing, the grid is composed of several squares with side length d. The smaller d is selected, the M 0 The closer it is to the shape of D, but the calculation amount is correspondingly increased. Since the method of the present invention is aimed at 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. This meshing process treats D as a mesh M 0 and record the corresponding te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a linear image deformation method based on a local coordinate. The method comprises transforming an image into a corresponding four-side-territory grid, presenting the geometrical characteristics of the grid by affine and angle linearity restriction, constructing a boundary restriction condition based on a user-appointed control culmination, solving a linear equations set, rapidly computing the deformed image. According to the method, the deformation effect with translation sensibility can be obtained by an interaction speed, the proportion of affine deformation can be controlled by adjusting the weights of two kind of linearity restriction, complex deformation effects, such as good bend, translation sensibility, anisotropy zoom, etc., are realized.

Description

technical field [0001] The present invention relates to the deformation technology of two-dimensional image, in particular to the animation production technology for deforming the two-dimensional image depicted with animation image. Background technique [0002] A large number of artistic images, such as cartoon characters, are stored in the form of images. If you can control their deformation in a simple way and quickly generate various new actions and expressions, you can significantly improve the efficiency of animation production and reduce the difficulty of production. This demand has the following characteristics: firstly, the deformation of this animation image is an inaccurate deformation, and it is not necessary to use methods such as physical simulation to obtain accurate results, as long as the basic geometric characteristics are maintained; secondly, users hope to control the deformation results through simple means; In addition, the algorithm should have high r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06T13/00G06T13/80
Inventor 罗笑南李峥苏卓
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com