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Image processing method and image processing device

An image processing and image technology, applied in the image processing device, based on the field of image processing of wireless impulse response, can solve the problems of color distortion, non-consideration, dragging, etc., and achieve the effect of suppressing image dragging and protecting the edge structure

Active Publication Date: 2019-07-30
REALTEK SEMICON CORP
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Problems solved by technology

However, taking the scanning order from upper left to lower right as an example, the IIR filter only takes pixels to the left, upper left, upper, and / or upper right of the target pixel as references, and does not consider pixels in other directions, so it is easy to cause Image dragging phenomenon in which pixel features on the left, upper left, upper, and / or upper right spread to other directions
This image dragging phenomenon is easy to cause color distortion, and if it occurs at the edge of the image, it will cause the edge of the image to be blurred

Method used

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  • Image processing method and image processing device

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Embodiment Construction

[0029] The technical terms in the following description refer to the customary terms in this technical field. If some terms are explained or defined in this manual, the explanations of these terms shall be based on the descriptions or definitions in this manual.

[0030] The disclosed content of the present invention includes an image processing method and an image processing device. Since some components included in the image processing device of the present invention may be known components individually, the details of the known components will be omitted in the following description without affecting the full disclosure and practicability of the invention of the device. .

[0031] figure 2 It is a functional block diagram of an embodiment of the image processing device of the present invention, and Fig. 3 corresponds to figure 2 Flowchart of the image processing method. The image processing device 200 includes a memory 210 , a weight calculation circuit 220 and a filte...

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Abstract

The invention discloses an image processing method and an image processing device, which are used for filtering an image. The image processing method comprises the following steps of (A) generating aweight for each reference pixel, wherein the image comprises a plurality of reference pixels, and the size of the weight is related to the similarity between a target pixel and the reference pixel corresponding to the weight; and (B) performing a wireless pulse response filtering operation according to the weights, the pixel value of the target pixel and the pixel values of the reference pixels toobtain a wireless pulse response filtering value of the target pixel.

Description

technical field [0001] The present invention relates to image processing, in particular to an image processing method and an image processing device based on an infinite impulse response (IIR). Background technique [0002] figure 1 is a schematic diagram of a window for image processing. The 5×5 window (including 25 pixels) in the figure is used to perform image processing on the central target pixel P(i,j), and other pixels in the window are reference pixels. Assume that when performing the spatial domain wireless impulse response (infinite impulse response, hereinafter referred to as IIR) filtering operation, the image is processed in the scan order (Raster scan) from upper left to lower right, so the pixels in the white part of the window are untouched The original pixel processed by IIR filtering, whose pixel value is the original pixel value PV ORI , the pixels in the gray part are pixels that have been previously processed by IIR filtering (abbreviated as IIR pixel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14H04N5/21
CPCH04N5/14H04N5/21
Inventor 刘楷黄文聪
Owner REALTEK SEMICON CORP
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