Multi-wedgelet Image Approximation Method Based on Boundary Scan

A technology of boundary scan and approximation method, which is applied in the field of image processing, can solve problems such as large errors, achieve high fitting accuracy and fitting speed, reduce errors, and enhance the effect of transformation

Active Publication Date: 2022-02-15
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] But only using straight lines to divide the image sub-blocks, when encoding the approximate image, although a small bit can be used to represent the approximation of the entire image, the error is large, or the peak signal to noise ratio (Peak Signal to NoiseRatio, PSNR ) is very large

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  • Multi-wedgelet Image Approximation Method Based on Boundary Scan
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  • Multi-wedgelet Image Approximation Method Based on Boundary Scan

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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0040]Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wit...

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Abstract

The invention discloses a multi-wedgelet image approximation method based on boundary scanning, which relates to the technical field of image processing. This method can be applied to the flexible division of coding units during video encoding. The division and intra-block prediction of image blocks based on multiple Wedgelets is a supplement to the existing image block prediction. The method includes: Step1. Image block. Step2. Statistical image block boundary point information. Step3. Multi-edge and multi-line fitting. Step4. Find the approximate block of the image block. Step5. Find an approximate image. The method disclosed in the present invention uses multiple shapes to fit images so as to quickly obtain its function of approximating images, and can improve image fitting precision.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a boundary-scan-based multi-wedgelet image approximation method. Background technique [0002] At present, for image fitting, the traditional Wedgelet transform algorithm is often used. The traditional Wedgelet transform divides an image sub-block into two wedges with a line segment, and each wedge is represented by a unique gray value. The position of the line and the two gray values ​​approximately describe the nature of the sub-block. [0003] But only using straight lines to divide the image sub-blocks, when encoding the approximate image, although a small bit can be used to represent the approximation of the entire image, the error is large, or the peak signal to noise ratio (Peak Signal to NoiseRatio, PSNR ) is very large. [0004] In order to reduce the approximation error, the traditional Wedgelet transform algorithm can no longer meet the requirements of high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V10/74G06K9/62
CPCG06V10/751
Inventor 段昶罗兴奕杨卓蒋琳娜
Owner SOUTHWEST PETROLEUM UNIV
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