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Method and device for removing moire patterns

A moiré and image technology, applied in the field of image processing, can solve the problem of loss of image details, etc., to achieve the effect of reducing loss and removing moiré

Pending Publication Date: 2020-07-03
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, there are some moiré removal methods in the industry. Most of these methods use feature maps of different resolutions obtained by downsampling the image, and respectively remove moiré patterns from the feature maps of different resolutions. This technique will lose the image originality. some details

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  • Method and device for removing moire patterns
  • Method and device for removing moire patterns
  • Method and device for removing moire patterns

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Embodiment Construction

[0048] The technical solution in this application will be described below with reference to the accompanying drawings.

[0049] When shooting objects with dense textures such as clothing, buildings, or screens with a digital camera, moiré patterns often occur, such as figure 1 as shown, figure 1 On the left is the moiré pattern produced when shooting clothes, figure 1 The moiré pattern produced when photographing the building on the right.

[0050] At present, there are some methods for moiré removal in the industry. These methods remove moiré in the RGB domain, and do not distinguish moiré from the useful texture of the image; and most of these methods use the image obtained by downsampling the image. For feature maps of different resolutions, moiré is removed for feature maps of different resolutions. This technique will lose the original details of the image to a certain extent, such as high-frequency details.

[0051] Therefore, cleanly removing moiré while protecting t...

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Abstract

The invention provides a method and a device for removing moire patterns, and relates to the field of artificial intelligence and computer vision. The method comprises the steps of performing wavelettransform on a to-be-processed image to obtain a first wavelet image; removing moire patterns from the first wavelet image to obtain a second wavelet image; and performing wavelet inverse transformation on the second wavelet image to obtain a restored image of the to-be-processed image. According to the method, the moire patterns on the to-be-processed image are decomposed to the wavelet images with different frequencies through wavelet transform, and then moire pattern removal processing is performed on each wavelet image, so that the moire patterns with different frequencies can be removed,and therefore, compared with the prior art, the moire patterns can be removed more effectively, and the loss of original details of the image can be reduced.

Description

technical field [0001] The present application relates to the field of image processing, in particular to a method and device for removing moiré. Background technique [0002] Moiré tends to occur when photographing densely textured objects such as clothing, buildings, roofs, or screens with a digital camera. [0003] Currently, there are some moiré removal methods in the industry. Most of these methods use the feature maps of different resolutions obtained by downsampling the image, and respectively remove the moiré patterns from the feature maps of different resolutions. This technique will lose the image originality. There are details. [0004] Therefore, effectively removing moiré patterns while reducing the loss of original image details is the main bottleneck in this current research direction. Contents of the invention [0005] The present application provides a method and device for removing moiré, which can effectively remove moiré and reduce the loss of origina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/10G06K9/00G06K9/32G06N3/04G06N3/08
CPCG06T5/10G06N3/08G06T2207/10004G06T2207/10024G06T2207/20064G06T2207/20081G06T2207/20084G06V20/10G06V20/635G06V30/10G06N3/045G06T5/77G06V10/52G06V10/82G06V20/62G06N3/0464G06T5/70G06T5/60
Inventor 刘林岳俊刘健庄袁善欣
Owner HUAWEI TECH CO LTD
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