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Apparatus and method to remove jagging artifact

A tooth-shaped, natural technology, applied in the direction of character and pattern recognition, color TV parts, TV system parts, etc., can solve the problems of image quality deterioration, wrong determination, and inability to find jagged unnatural areas, etc.

Inactive Publication Date: 2005-12-14
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, traditional image quality processing devices use thresholds to identify areas where jagged artifacts have occurred
For this reason, the device may fail to detect areas where jagged artifacts have occurred, or may incorrectly determine
Also, performing vertical filtering on areas where jaggies are already present does not significantly remove jaggies, thus deteriorating image quality

Method used

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  • Apparatus and method to remove jagging artifact
  • Apparatus and method to remove jagging artifact
  • Apparatus and method to remove jagging artifact

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Embodiment Construction

[0034] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments are described below, in order to explain the present invention, while referring to the figures.

[0035] image 3 A schematic block diagram of a device for eliminating tooth unnaturalness according to an embodiment of the present invention is shown. refer to image 3 , the device 300 for eliminating tooth-like unnaturalness includes a calculation unit 310 , a weight determination unit 320 , and a low-pass filter 330 .

[0036] The calculation unit 310 defines a window of a predetermined size based on current pixels in an input current frame or field, and calculates at least one feature value and at least one feature vector to determine features of the window based on pixel values ​​in the window. Such as image 3 As shown, the window includes at least t...

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Abstract

In the device and method for eliminating tooth-like unnaturalness, the calculation unit defines a window of a predetermined size based on the input current frame or current pixel in the field, and calculates at least one eigenvalue and at least one eigenvector to determine the window Characteristics. The weight determination unit determines a characteristic of the window based on the calculated characteristic value, and then determines a filter weight to be applied to filtering based on the determined characteristic. A low pass filter filters the window based on the calculated eigenvectors and the determined filter weights. Thus, it is possible to eliminate tooth-like unnaturalness occurring in regions such as edges at the time of image conversion.

Description

technical field [0001] The present invention generally relates to an apparatus and method for eliminating jagging artifacts, and more particularly, to an apparatus and method for eliminating jagging artifacts (such as stair stepping) generated upon image conversion. Background technique [0002] Such as figure 1 As shown in , unnatural jaggedness is a phenomenon in which each oblique line of an image does not look like a straight line but like a step, which deteriorates the image quality. Staircasing results from de-interlacing, scaling, etc., and is variously referred to as staircasing, diagonal noise, and the like. [0003] Meanwhile, a conventional image quality processing device for eliminating jaggy unnaturalness (which is a kind of tooth-like unnaturalness) is disclosed in U.S. Patent No. 5,625,421, which in figure 2 is shown in . [0004] refer to figure 2 , the conventional image quality processing device includes a detection unit 210 and a vertical filter 220 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/20G06K9/00G06K9/40G06T5/00H04N5/14H04N5/205H04N5/21H04N5/44H04N7/01
CPCH04N5/21H04N7/012G06T5/20G06T2207/20012G06T5/70H04N5/14
Inventor 权宁辰梁承埈
Owner SAMSUNG ELECTRONICS CO LTD