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Image enhancement method and image enhancement device

An image enhancement and image technology, applied in the direction of color signal processing circuit, etc.

Active Publication Date: 2021-03-02
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, edge enhancement tends to amplify the noise in the image

Method used

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  • Image enhancement method and image enhancement device
  • Image enhancement method and image enhancement device
  • Image enhancement method and image enhancement device

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Embodiment Construction

[0081] Embodiments of the present invention provide an image enhancement method and an image enhancement device, which are mainly aimed at sharpening image edges and simultaneously suppressing brightness noise and color noise, thereby reducing image distortion observed by human eyes. The image enhancement method and image enhancement device of the embodiment of the present invention include: image edge detection, infinite impulse response (IIR) noise suppression, low-pass filtering in the edge direction, thin edge detection, edge response strength calculation, and low-saturation Color suppression for crisp, clean images.

[0082] First, please refer to figure 1 , which shows a schematic diagram of an image enhancement device according to an embodiment of the present invention. Such as figure 1 As shown, the image enhancement device 100 receives an input image Im, and obtains a plurality of pixels P0-Pn of the input image Im in a YUV color space. Each pixel P0-Pn has a Y pix...

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Abstract

The present invention provides an image enhancement method and an image enhancement device, which can perform edge enhancement (that is, sharpen) the demosaiced image according to the regional characteristics of the input image, and can suppress brightness noise and color noise at the same time, and further Provides clear and clean images.

Description

technical field [0001] The invention provides an image enhancement method and an image enhancement device, and in particular relates to an image enhancement method and an image enhancement device for edge enhancement and noise suppression of an input image. Background technique [0002] A conventional color filter array image (Raw CFA Image) needs to be mosaiced to obtain a full-color image (color image). The above full-color images are not sharpened and do not conform to the natural images observed by human eyes. Therefore, after demosaicing, the blurred image will first be edge enhanced to obtain a sharper image that is more comfortable for the human eye. [0003] However, edge enhancement tends to amplify the noise in the image. Therefore, between the side effects of edge enhancement and noise amplification, an effective processing method is needed to simultaneously solve the above-mentioned problems. Contents of the invention [0004] The present invention provides ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64
Inventor 刘楷黄文聪
Owner REALTEK SEMICON CORP