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Image moire inhibition method and device

A moiré and image technology, applied in the field of image processing, can solve the problems of poor image quality, reduced image clarity, and blurred images.

Active Publication Date: 2018-10-02
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

But this method will also filter the non-moiré pixels in the image at the same time, which will make the image blurred, reduce the clarity of the image, and make the image quality poor
[0004] It can be seen that after the image moiré is suppressed by the current image moiré suppression method, the quality of the obtained image is poor

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Embodiment Construction

[0059] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0060] Currently, image moiré is suppressed by adding a low-pass filter in front of the device's lens. However, this method will also filter the non-moiré pixels in the image at the same time, which will make the image blurred, reduce the definition of the image, and make the image quality poor.

[0061] In view of this, an embodiment of the present invention provides a method and device for suppressing image moiré, wherein the suppression method uses a preset window to traverse the image to be processed, and during the traverse process, it is determined whether the image in the preset window contains moiré. Texture pixels. That is, by dividing the image into blocks, it is deter...

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Abstract

The invention discloses an image moire inhibition method and device, and provides a novel moire inhibition method so as to improve the image frame quality; the image moire inhibition method comprisesthe following steps: dividing a to-be-processed image into at least two image areas; using a preset window to traverse each of the at least two image areas, and determining whether an image in the preset window contains moire pixels or not in the traversal process; if yes, determining whether each image area is a moire area or not according to the quantity of the moire pixels; if any image area isa moire area, using the moire pixels contained in the moire area to remove moire, and determining the original pixel value; using the original pixel value to interpolate the moire pixels, thus eliminating the moire in each image area.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and equipment for suppressing image moiré. Background technique [0002] Moiré refers to the high-frequency interference fringes that appear on the photosensitive elements of the equipment on digital cameras or scanners. It is a kind of high-frequency irregular fringes that make the picture appear colored, which makes the final image False color exceptions are produced. [0003] At present, moiré in images is usually suppressed by adding a low-pass filter in front of the lens of the device. However, this method will also filter the non-moiré pixels in the image at the same time, which will make the image blurred, reduce the definition of the image, and make the image quality poor. [0004] It can be seen that after the image moiré is suppressed by the current image moiré suppression method, the quality of the obtained image is relatively poor. Contents of th...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/11
CPCG06T7/11G06T2207/30168G06T5/77
Inventor 钱勇郁军军方伟
Owner ZHEJIANG DAHUA TECH CO LTD
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