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A method and device for improving image quality

An image quality and image technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems that the image effect reduces the viewing experience of the human eye, and the display image effect is distorted.

Inactive Publication Date: 2018-08-28
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventors found at least the following problems in the prior art: although the brightness compensation of the image by increasing the screen brightness can also improve the display quality of the device under ambient light, simply increasing the brightness will easily lead to distortion of the display effect. At the same time, the high brightness and distorted picture effect reduce the viewing experience of the human eye

Method used

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  • A method and device for improving image quality
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  • A method and device for improving image quality

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Embodiment 1

[0134] The present invention provides a method for improving image quality, such as figure 1 As shown, the method for improving image quality includes:

[0135] 101. Perform color space conversion on an original image to obtain a converted image, and extract a brightness component in the converted image as an input image.

[0136] 102. Detect the current ambient light intensity.

[0137] 103. If the current ambient light intensity is less than a preset threshold, perform contrast enhancement processing on the input image based on a histogram correction method of logarithmic mapping to obtain a first output image.

[0138] 104. If the current ambient light intensity is not less than a preset threshold, construct constraints including image brightness, image quality, and image compensation, and process the input image based on the constraints to obtain a second output image.

[0139] In practice, in order to solve the problem in the prior art that the display effect of non-sel...

Embodiment 2

[0276] The present invention provides a device 2 for improving image quality, the device 2 for improving image quality, such as figure 2 shown, including:

[0277] The conversion unit 21 is configured to perform color space conversion on the original image to obtain a converted image, and extract a luminance component in the converted image as an input image.

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Abstract

The invention discloses a method and device for improving image quality, which belongs to the field of image display. The invention converts the original image into a color space, detects the current ambient light intensity, and performs contrast enhancement processing on the image when the current ambient light intensity is less than the preset threshold to obtain a first output image. When the image is less than the preset threshold, a constraint condition is constructed on the image, and multiple processes are performed on the image based on the solution to the constraint condition to obtain a second output image. Compared with the existing technology, the first output image or the second output image obtained according to the present invention has higher image quality, can solve the defect of poor display effect of the display device under ambient light, and at the same time adds losses during the processing process. Compensation, contrast, and brightness adjustments ensure the fidelity of the displayed image and improve the viewing experience of the human eye.

Description

technical field [0001] The invention belongs to the field of image display, in particular to a method and device for improving image quality. Background technique [0002] Display technology is a window for human-computer connection and information display, and is widely used in various fields such as industry, military, transportation, entertainment, education, aerospace, and medical treatment. The image quality of display devices, especially mobile display devices (such as mobile phones, notebook computers, car video, etc.), is deeply affected by the ambient light. When the display device is placed outdoors with strong ambient light, the picture will become darker, the color will become lighter, and the readability will be poor, which is what we usually call "reflective" phenomenon. This phenomenon caused by ambient light brings great inconvenience to our daily life. [0003] The solutions in the prior art are mainly divided into two types: (1) reducing the reflectivity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T2207/10024G06T2207/10004G06T5/00
Inventor 郑喆坤王露杜元甲王舒瑶
Owner XIDIAN UNIV
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