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Image filtering method and device

An image filtering and image technology, applied in the field of image processing, can solve the problems of destroying the details of the image, not effectively improving the image quality, and blurring the image

Active Publication Date: 2015-11-25
ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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Problems solved by technology

[0004] However, the existing image filtering method may destroy the details of the image and make the image blurred. Therefore, the average filtering method cannot effectively improve the image quality.

Method used

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0055] In the embodiment of the present application, firstly, it is determined that among the pixels adjacent to the first pixel to be processed in the image to be processed, the pixel whose pixel value satisfies the preset condition is the second pixel to be processed, and the first pixel to be processed is determined In the direction of the connection between the processing pixel and the second pixel to be processed, the first pixel adjacent to the first pixel to be processed, and ...

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Abstract

The invention provides an image filtering method and device. The method comprises steps: a second pixel point to be processed with a pixel value meeting preset conditions in pixel points adjacent to a first pixel point to be processed in an image to be processed is determined; a first pixel point adjacent to the first pixel point to be processed and a second pixel point adjacent to the second pixel point to be processed in the line connection direction of the first pixel point to be processed and the second pixel point to be processed are determined; according to a first threshold condition, a second threshold condition and a pixel difference of the first pixel point to be processed and the second pixel point to be processed, the pixel value of the first pixel point to be processed and the pixel value of the second pixel point to be processed are replaced according to the pixel values of the adjacent pixel points in the vertical direction of the line connection direction of the first pixel point to be processed and the second pixel point to be processed. The filtering effect is raised and the image quality is raised.

Description

technical field [0001] The present application relates to the technical field of image processing, and more specifically relates to an image filtering method and device. Background technique [0002] The image may be disturbed by noise during the process of acquisition and transmission, which will affect the quality of the image. Image filtering refers to the suppression of image noise under the condition of retaining image details, which is an important means to reduce image noise and enhance image quality. [0003] An existing image filtering method is to use the mean filtering method, that is, when a pixel point in the image is a noise point, the pixel value of the noise point is used with the pixel value of each pixel point in the neighborhood of the noise point The mean value of the value is replaced. [0004] However, the existing image filtering method may destroy the details of the image and make the image blurred. Therefore, the average filtering method cannot eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 冷永春胡胜发
Owner ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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