Figure five sense organ deformation method based on image local precise deformation

A facial features and local technology, applied in the field of computer graphics and image processing, can solve the problems of not strictness, disappearance, contour deformation, etc., to achieve the effect of suppressing aliasing, reducing operation complexity, and simple and fast operation.

Active Publication Date: 2014-05-28
SUN YAT SEN UNIV
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However, this method is not strictly local deformation. The outline of the original image will be deformed to a cert

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  • Figure five sense organ deformation method based on image local precise deformation
  • Figure five sense organ deformation method based on image local precise deformation
  • Figure five sense organ deformation method based on image local precise deformation

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[0046] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0047] The method of the invention includes two parts: automatic generation and positioning of control points and precise local deformation of the image. figure 1 Shown.

[0048] (1) Automatic generation and positioning of control points

[0049] The present invention collects a large number of facial images, analyzes and calculates the fuzzy position and shape of the facial features, combined with the contour of the control area drawn by the user and the selected facial features, the system can automatically generate facial features deformation control points, and supports the user to fine-tune to make the control points More in line with the contours of the facial features to be deformed.

[0050] Through the collection of a large number of images and experimental data, the system presets a variety of deformation templates for the five senses-eyes, eyeb...

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Abstract

The invention discloses a figure five sense organ deformation method based on image local precise deformation. According to the method, various five sense organ types and five sense organ deformation templates are preset, deformation control points can be automatically generated, target positions of the control points are calculated, and various common deformation effects are achieved. In the deformation process of a facial image, an existing affine transformation deformation function based on an MLS is improved, and a localization processing technique capable of achieving precise image deformation is put forward; on the basis that deformation is controlled through the control points, attenuation calculation is carried out on an MLS deformation mapping result by means of setting of a control area, and on the premise that local smooth deformation is guaranteed, aliasing of image boundaries is prohibited. According to the method, figure five sense organ precision deformation can be achieved, the deformation result is smooth and highly vivid, an operation process is intelligent, complexity of use operations is reduced, and the method can be widely used for advertisement, animation and other fields.

Description

technical field [0001] The invention relates to the technical field of computer graphics and image processing, and is a point-based local accurate deformation method. Background technique [0002] Character facial features deformation is a very important application in the field of image deformation, and it is widely used in advertising, film, animation and other fields. During the deformation process of the character's facial features, the operator adds points, lines and other control handles, and modifies the position and direction of the handles, so that the character's facial features can be deformed in an intuitive way. [0003] The facial features deformation method of characters is mainly based on image deformation. In the past, the work on image deformation mainly focused on the research of different control methods. At present, the main methods are: grid-based, domain-based and point-based image deformation techniques. [0004] Sederberg and Parry (literature refer...

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Application Information

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IPC IPC(8): G06T3/00
Inventor 杜晓荣平淑文武汇岳张永
Owner SUN YAT SEN UNIV
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