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Image filtering method and device

An image filtering and image technology, which is applied in the field of image processing, can solve the problems of large median filtering operation delay and low image filtering efficiency, and achieve the effect of reducing operation delay and improving image filtering efficiency

Active Publication Date: 2019-01-22
GUANGZHOU FASTPRINT CIRCUIT TECH +1
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Problems solved by technology

[0004] In the process of implementation, the inventors found that there are at least the following problems in the current technology: the traditional median filtering operation delay is large, resulting in low image filtering efficiency

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0046] The traditional median filtering technology obtains the median value by comparing the extracted data in pairs, but it needs to be calculated 72 times. Even if FPGA (Field Programmable Gate Array, Field Programmable Gate Array) is used for parallel calculation, the calculation speed can be accelerated. , and cannot avoid taking up too many computing resources.

[0047] There is another traditional median filtering technique. Taking a window of 3*3 size as an example, the process of sorting the extracted data to obtain the median value is as follows: first compare the...

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Abstract

The invention relates to an image filtering method and a device. The method comprises the following steps: acquiring the old serial number of the first image, the old serial number of the second image, the remaining area of the image and the new area of the image; acquiring a final sequence number corresponding to each image block of the remaining area of the image and a new sequence number corresponding to each image block of the new area of the image in the second template; and outputting data of the image block corresponding to the intermediate value sequence number. When the method is applied to the parallel operation, the operation can be completed in only one clock cycle, the operation delay is reduced, the image filtering efficiency is improved, the real-time filtering processing ofthe image is facilitated, and the real-time performance is high. In addition to obtain data with median sequence number, other sequence number data are also indirectly obtained, which improves the application range of the invention and has wide application range.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to an image filtering method and device. Background technique [0002] With the development of image processing technology, digital image processing technology has emerged. This technology transforms an image that exists in a natural form into a digital form suitable for electronic equipment processing through sampling and quantization processes, and generally stores it in the form of a matrix. In the process of image data transmission, it is inevitable to receive noise interference, which will distort the image. In order to facilitate the processing of image edge detection, image segmentation and pattern recognition, it is necessary to filter the image. [0003] As one of the traditional filtering techniques, the median filter technology uses a window of a certain size as a template to slide the template on the image in the form of a matrix, and each slide takes ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/20
CPCG06T5/20G06T2207/20021G06T2207/20032
Inventor 雷勇锋陈思豪谢海亮杜焕勇
Owner GUANGZHOU FASTPRINT CIRCUIT TECH
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