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Adaptive deinterlacing method and device

A de-interlacing and self-adaptive technology, applied in instruments, televisions, image data processing, etc., can solve problems such as high hardware implementation complexity, inaccurate motion vectors, and poor motion compensation effects

Active Publication Date: 2016-12-28
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the motion compensation algorithm requires that the estimated motion vector must be accurate and reliable. For the field of scene change, the reference frame loses its original meaning, the calculated motion vector is not accurate, and the motion compensation effect is poor.
At the same time, when this type of algorithm deinterlaces the current field graphics, it generally needs to refer to the previous and next field images adjacent to the current field image, and needs to store three field images in advance and perform calculations on the three field graphics. Therefore, There are also defects such as a large amount of calculation, a large amount of image information to be cached, and a correspondingly large complexity of hardware implementation.

Method used

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  • Adaptive deinterlacing method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Such as figure 1 As shown, the adaptive de-interlacing method in this embodiment includes,

[0094] Judging whether a scene change has occurred in two adjacent interlaced images;

[0095] If a scene change occurs in two adjacent interlaced images, the first algorithm is used to perform interpolation compensation for the interlaced images;

[0096] If there is no scene change in the adjacent two interlaced images, the second algorithm is used to perform interpolation compensation for the interlaced images;

[0097] Wherein, the first algorithm is to perform interpolation compensation for the interlaced image through the boundary adaptive intra-field interpolation algorithm;

[0098] The second algorithm is to divide the interlaced image into a plurality of pixel blocks to be interpolated, and estimate the best matching block pixel of the pixel block to be interpolated in the previous field image of the interlaced image where the pixel block to be interpolated is locate...

Embodiment 2

[0130] The self-adaptive de-interlacing method of this embodiment is basically the same as the method steps of the above-mentioned embodiment 1. Compared with the previous interlaced image, the interlaced image in this embodiment has also undergone a scene change, and the first algorithm is also used for the interlaced image. Perform interpolation compensation. In this embodiment, different from the previous embodiment, in the process of selecting the reference point of the pixel to be interpolated, on the upper and lower scanning lines adjacent to the pixel to be interpolated, the Relevant pixel points in five directions are selected on the point to be interpolated, and these five directions are the vertical direction of the point to be interpolated and the four directions symmetrically set on both sides of the vertical direction and forming an acute angle of 30° and 60° with the vertical direction

[0131] The self-adaptive de-interlacing method of this embodiment firstly ju...

Embodiment 3

[0137] Such as figure 1 As shown, the adaptive de-interlacing method in this embodiment includes,

[0138] Judging whether a scene change has occurred in two adjacent interlaced images;

[0139] If a scene change occurs in two adjacent interlaced images, the first algorithm is used to perform interpolation compensation for the interlaced images;

[0140] If there is no scene change in the adjacent two interlaced images, the second algorithm is used to perform interpolation compensation for the interlaced images;

[0141] Wherein, the first algorithm is to perform interpolation compensation for the interlaced image through the boundary adaptive intra-field interpolation algorithm;

[0142] The second algorithm is to divide the interlaced image into a plurality of pixel blocks to be interpolated, and estimate the best matching block pixel of the pixel block to be interpolated in the previous field image of the interlaced image where the pixel block to be interpolated is locate...

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Abstract

The invention discloses a self-adaptive de-interlacing method and device. The self-adaptive de-interlacing method and device are simple in algorithm and good in de-interlacing effect. According to the self-adaptive de-interlacing method, based on the fact whether scene change occurs on two adjacent frames of images, de-interlacing compensation is carried out on the images respectively through a non-motion compensation method and a motion compensation method. The self-adaptive de-interlacing method and device reduce the complexity of a de-interlacing algorithm and the complexity of a hardware structure to some extend on the premise of guaranteeing the quality of the images.

Description

technical field [0001] The invention relates to the technical field of image signal processing, in particular to an adaptive deinterlacing method and device. Background technique [0002] In the traditional analog broadcasting TV system, the scanning of the TV screen adopts the interlaced scanning method. However, with the introduction of high-definition flat panel display products, the problems of interlaced scanning such as crawling and flickering in these displays are becoming more and more prominent. In order to solve these problems, it is necessary to convert the interlaced signal into a progressive signal to meet people's visual needs. De-interlacing technology is a method of converting interlaced image information into progressive image information. Existing deinterlacing algorithms mainly include non-motion compensation algorithms and motion compensation algorithms. [0003] The non-motion compensation algorithm is a popular de-interlacing algorithm in the early st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14H04N19/10G06T7/20
Inventor 刘卫东赵静于岗
Owner HISENSE VISUAL TECH CO LTD