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Establishment method of evaluation criterion parameters and method for evaluating image quality of display screen

A technology for establishing methods and evaluation standards, applied in the field of image processing, can solve problems such as difficult display screens to give objective and fair evaluation standards, and achieve the effect of helping design and development and improving objectivity

Active Publication Date: 2013-04-17
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0005] As can be seen from the above, due to the subjectivity of the subjects involved in the evaluation, it is difficult to give an objective and fair evaluation standard between the design, development and consumers of the display screen.

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  • Establishment method of evaluation criterion parameters and method for evaluating image quality of display screen
  • Establishment method of evaluation criterion parameters and method for evaluating image quality of display screen

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] see figure 1 , figure 1 is a schematic flowchart of the first embodiment of the method for establishing evaluation standard parameters in the present invention. The evaluation standard parameters are used to evaluate the image quality of the display screen. In the embodiment of the present invention, the phenomenon of bright spots (also known as mura) and uneven brightness (also known as hotspot) of the image can be directly observed by human eyes. I...

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Abstract

The invention discloses an establishment method of evaluation criterion parameters, wherein the evaluation criterion parameters are used for evaluation on the image quality of a display screen; and the image quality is inversely proportional to the severity of mura and hotspots of images. The establishment method comprises the following steps of photographing a group of various-severity test images to obtain a sample photo group; selecting standard photos from the sample photo group by eyes; performing Fourier transformation on the brightness of the photos in the sample photo group to obtain frequency distribution functions; convolving the frequency distribution functions and human-eye contrast sensitivity functions in a frequency domain to obtain convolution functions; normalizing the convolution functions to obtain evaluation parameters; and selecting the evaluation parameters of the standard photos from the evaluation parameters of all the photos in the sample photo group as the evaluation criterion parameters. The invention also discloses a method for evaluating the image quality of the display screen. With the adoption of the establishment method of the evaluation criterion parameters and the method for evaluating the image quality of the display screen, the evaluation criterion parameters which are more objective and more systematic can be obtained.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method for establishing evaluation standard parameters, and also relates to an evaluation method for display screen image quality using evaluation standard parameters. Background technique [0002] As a friendly interface for man-machine exchange of information, the display can output information accurately, intuitively and clearly. When the display screen is sold as an electronic product, the image quality of the display screen becomes one of the important determinants for consumers to purchase. The image quality is determined by related parameters such as brightness, color cast, and clarity. Therefore, evaluating the image quality of the display screen is an important content to be considered in the development and design of the display screen. Since the display information of the display screen is directly observed by human eyes, the evaluation criteria are different for dif...

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Application Information

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IPC IPC(8): H04N17/00
CPCG09G3/006G09G2360/145
Inventor 陈黎暄康志聪
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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