Subdivision method-based image amplifying method

An image and magnification technology, applied in the field of image processing, which can solve problems such as blurring of high-resolution images

CN101833748BInactive Publication Date: 2013-01-02SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-01-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a subdivision method-based image amplifying method and belongs to the technical field of images. In the image amplifying method, the characteristic of rapidly inserting novel data of the subdivision method is applied to image amplification. Amplified image data is calculated by a Ferguson surface patch. The method of the invention comprises the following steps of: (1) inputting a low resolution image I and an amplification factor n; (2) determining a required subdivision frequency k according to the amplification factor n; (3) sorting and marking a pixel; (4) calculating a gradient and a twisting vector at the position of the pixel according to different sorting marks of the pixel; (5) carrying out refinement on the image data by utilizing improved interpolatory subdivision; and (6) resampling the refined data according to the required data resolution and outputting the sampled image. The image amplifying method of the invention can fulfill the aim of maintaining the edge of the image to make the image clearer.
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Description

technical field

[0001] The invention relates to the technical field of image processing, in particular to an image enlargement method based on a subdivision method. Background technique

[0002] In today's information age, with the development of computer technology, digital cameras, network video and high-definition digital television, digital images have increasingly become an important channel for people to obtain information. Especially with the popularization of high-definition digital TV signals in China, a large number of ordinary TV program sources need to be upgraded to high-definition digital TV programs, which increases the urgent demand for digital image / video amplification technology.

[0003] The so-called image magnification refers to a basic operation to obtain high-definition images by increasing the resolution of the image. and so on have a wide range of applications.

[0004] Traditional image enlargement methods are mostly based on continuous function a...

Examples

Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] The invention provides an image enlargement method based on a subdivision method, which can achieve the purpose of image edge preservation and make the image clearer.

[0048] The technical solutions of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] The subdivision method is an important mesh surface processing tool in computer graphics. It generates a high-resolution fine me...