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Image reconstruction method and image decoding device

An image reconstruction and image technology, applied in the multimedia field, can solve problems such as poor reconstruction effect

Active Publication Date: 2020-11-10
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application provides an image reconstruction method and image decoding equipment to solve the problem of poor reconstruction effect of existing image reconstruction methods

Method used

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  • Image reconstruction method and image decoding device
  • Image reconstruction method and image decoding device
  • Image reconstruction method and image decoding device

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Embodiment Construction

[0037] The technical solutions in this application will be described in detail below with reference to the accompanying drawings in this application.

[0038] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also Plural expressions are included unless the context clearly indicates otherwise. It should also be understood that although the terms first, second, etc. may be used in the following embodiments to describe a certain type of object, the object should not be limited to these terms. These terms are only used to distinguish specific objects of that class. For example, the terms first, second, etc. may be used in the following embodiments to describe predicted pixel values, but the ...

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Abstract

The invention discloses an image reconstruction method and an image decoding device. The image reconstruction method comprises the steps of determining a to-be-reconstructed image; calculating a firstprediction pixel value of each pixel according to the similar pixel block group of each pixel in the to-be-reconstructed image; reconstructing the to-be-reconstructed image according to the first prediction pixel value of each pixel to obtain a first adjustment image; and generating a second adjustment image according to the first adjustment image. According to the technical scheme, the pixel value of each pixel in the to-be-reconstructed image is determined according to the global similarity of the image, so that the more accurate pixel value of each pixel can be obtained, the reconstructedimage can accurately present a part with a relatively large original image gradient, and the reconstruction effect is optimized.

Description

technical field [0001] The present application relates to the field of multimedia, in particular to an image reconstruction method and an image decoding device. Background technique [0002] Compared with other signals, the data volume of image data is relatively large. Based on this, before transmitting the image data, the sending device compresses the image data to obtain compressed image data. After receiving the compressed image data, the receiving device performs image reconstruction according to the compressed image data. One image reconstruction method presupposes that the image is piecewise smooth. Based on this, the receiving device can calculate the pixel value of its adjacent pixel according to the pixel value of a pixel, and minimize the gradient (pixel value difference) between the pixel value of the adjacent pixel and the pixel value of this pixel. [0003] It can be seen that the reconstructed image obtained by the existing image reconstruction method will ...

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Application Information

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IPC IPC(8): H04N19/42H04N19/44H04N19/182
CPCH04N19/42H04N19/44H04N19/182
Inventor 镡云孙永强雒云
Owner HUAWEI TECH CO LTD
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