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Image processing method and system

A technology of image processing and image data, applied in the field of image processing, can solve the problems of high-frequency noise amplification, low-quality reconstructed images, etc.

Inactive Publication Date: 2014-07-16
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this type of image sharpening scheme, high-frequency noise as a high-frequency signal is always amplified, which results in a low-quality reconstructed image

Method used

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  • Image processing method and system
  • Image processing method and system
  • Image processing method and system

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Embodiment Construction

[0025] The examples of the present disclosure will now be described more fully with reference to the accompanying drawings. The following description is merely exemplary in nature, and is not intended to limit the present disclosure, application, or use.

[0026] Example embodiments are provided so that this disclosure will be thorough and will fully convey its scope to those skilled in the art. Numerous specific details such as examples of specific components, devices, and methods are described to provide a detailed understanding of the embodiments of the present disclosure. It will be obvious to those skilled in the art that no specific details need to be used, and the example embodiments can be implemented in many different forms, and none of them should be construed as limiting the scope of the present disclosure. In some example embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.

[0027] Such as figure 1 As show...

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Abstract

The invention relates to an image processing method and system. The image processing method comprises the steps of receiving image data, processing the image data through a spot noise filter to remove high-frequency noise in the image data, processing the image data through a two-sided filter to remove low-frequency noise in the image data, processing the image data through a low pass filter to obtain low-frequency image data from the image data, subtracting the low-frequency image data from the image data to obtain high-frequency image data, amplifying the high-frequency image data through an amplifier to obtain amplified high-frequency image data, and adding the amplified high-frequency image data with the low-frequency image data to obtain sharpened image data. By means of the image processing method and system, noise in images can be effectively removed, and high-quality reconstructed images are obtained.

Description

Technical field [0001] The present disclosure relates to the technical field of image processing, and in particular to a method and system for sharpening an image. Background technique [0002] This section provides background information related to the present disclosure, which is not necessarily prior art. [0003] Image sharpening is one of the most impressive transformations that can be applied to an image because it seems to bring image details that did not exist before. However, what image sharpening actually does is to emphasize the edges in the image and make them easier to distinguish by the eyes. Although the visual effect is to make the image look sharper, it does not actually produce new details. [0004] The first step in sharpening an image is to slightly blur the image. Next, the original image and its blurred version are compared one pixel at a time. If the pixel is brighter than the blurred version, the pixel is further brightened. If the pixel is darker than th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/208H04N5/21
Inventor 郑艳
Owner FUJITSU LTD
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