Method and device for improving image quality

An image quality and image technology, applied in the field of image processing, can solve problems such as visual mutation, single adjustment of image saturation, complex logic, etc., and achieve the effect of bright and dark images, saturated and realistic colors, and noise reduction

Active Publication Date: 2008-12-17
VIMICRO ELECTRONICS CORP
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Problems solved by technology

In actual operation, the logic of judging image quality by image exposure time or luminance gain coefficient is complicated, and the physical meaning is not clear; at the same time, image switching will cause visual mutations, making it difficult for people to accept
Furthermore, if the saturation of the image is only

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  • Method and device for improving image quality
  • Method and device for improving image quality
  • Method and device for improving image quality

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Embodiment Construction

[0044] In order to make the purpose of the present invention more clear, it will now be described in conjunction with the accompanying drawings and specific embodiments. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0045] As the environment changes, the exposure of the image also changes constantly, so that the quality of the image cannot reach an ideal state. Therefore, the present invention proposes according to the exposure of the acquired image; when the exposure of the image is greater than the first predetermined threshold, reduce the image saturation, and perform one or more of the following steps: reduce the image sharpness, Reduce the image contrast, reduce the color enhancement function and turn on the noise reduction function; when the exposure of the image is less than the second predetermined threshold, increase the image saturati...

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Abstract

The invention provides a image quality improving apparatus which comprises: an exposure acquiring module for acquiring the exposure of image; a saturation regulating module for increasing or decreasing the image saturation according to the exposure; acutance regulating module for increasing, decreasing or eliminating the image or doing the anti-acutance according to the exposure; a contrast regulating module, for increasing or decreasing the image contrast according to the exposure; a color enhancement regulating module, for increasing or decreasing the image color intensity, or eliminating the color enhancing function according to the exposure; and a noise reduction module for opening, closing or reducing the image noise reduction function. Processed by the apparatus, the image becomes color saturated, verisimilar, clear and low noised.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for improving image quality. Background technique [0002] Image quality is very important to image readers. Good image quality can clearly display the content carried by the image, which is helpful for image readers to obtain the information carried by the image and make timely responses. However, the quality of the image in reality is not satisfactory. Usually, the color saturation of the image is not enough, the image looks blurred, and the light and shade are not clear. [0003] The existing technology adjusts the saturation of the image according to the exposure time of the image or the brightness gain coefficient, so that the image switches from color to black and white, or from black and white to color. In actual operation, the logic of judging image quality by image exposure time or luminance gain coefficient is complicated, and the physical ...

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Application Information

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IPC IPC(8): H04N5/243H04N5/235
Inventor 沈操王浩
Owner VIMICRO ELECTRONICS CORP
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