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Fuzzy motion measurement method for liquid crystal display

A motion blur, liquid crystal display technology, used in static indicators, instruments, etc., can solve problems such as the inability to objectively reflect the display quality of natural images, and achieve the effect of sufficient information, comprehensive information, and more information.

Inactive Publication Date: 2009-07-08
SOUTHEAST UNIV
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Problems solved by technology

[0004] Quantitative description of motion blur is an important part of objective evaluation of image quality. At present, there are LCRT evaluation methods based on response time, MPRC evaluation methods based on moving image response curves, and BEW evaluation methods based on blur width, but these methods are based on simple images. Or it is only based on the response between two gray levels, so it cannot objectively reflect the overall display quality of natural images

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  • Fuzzy motion measurement method for liquid crystal display
  • Fuzzy motion measurement method for liquid crystal display
  • Fuzzy motion measurement method for liquid crystal display

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Embodiment Construction

[0025] Such as figure 1 As shown, a liquid crystal display motion blur measurement method includes the following steps:

[0026] (1) Let the gray level of the nth pixel of the one-dimensional pattern be G(n), n∈1, 2, ... N, and the corresponding brightness distribution curve is L(x), when the motion speed is V pixels / frame , the gray levels at every V-1 pixel position constitute a sequence, and the V gray-scale test sequences are calculated using the following formula:

[0027] G (i) (nt)=G(N-i-n t V), i=0, 1, ... V-1

[0028] Among them: n—pixel number, N—horizontal resolution of the display screen, n t — the nth t Frame, i—number of the grayscale test sequence; (2) according to the grayscale test sequence G (i) (n t ), use the photoelectric conversion and acquisition system to measure the corresponding liquid crystal response curve L (i) (t), obtain V liquid crystal response curves, wherein: L—brightness, t—time;

[0029] (3) Utilize the liquid crystal response curv...

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Abstract

The invention discloses a method for measuring the motion blurring of liquid crystal displays, and belongs to the field of liquid crystal image quality measurement. The method comprises the following steps: calculating gray scale test input sequences; measuring liquid crystal response curves; calculating perceived brightness distribution curves; calculating dynamic modulation transfer functions; and finally, repeating the steps, so as to obtain the characteristic curves of the dynamic modulation transfer functions. By measuring the liquid crystal response curves based on finite and special input gray scale signal sequences, the invention realizes the analog calculations of the patterns with the brightness which is changed according to the sine rule with the space and can perceive results when moving on the LCD; and by comparing target patterns with perception effect, the invention can reflect the display quality of the motion image of the liquid crystal displays objectively. Based on display contents of the general image, the invention utilizes the response characteristics between multiple gray scales, and is closer to the display conditions of natural images, thereby enabling the measured information to be more overall.

Description

technical field [0001] The invention relates to a liquid crystal display motion blur measurement method in a display device image quality measurement method, and belongs to the field of liquid crystal image quality measurement. Background technique [0002] For general video image content, image changes are complex and diverse. In order to comprehensively consider image quality, it is often necessary to consider the response characteristics under multi-grayscale input sequences, because this can be closer to the display conditions of natural images. In addition, fundamentally speaking, a display device is an information system, and motion blur is a manifestation of its signal transmission characteristics. In the electrical signal system, the system function or transfer function is often used to express its frequency response characteristics; in the optical system, the optical transfer function is often used to analyze the imaging characteristics of the optical system. In fa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 张宇宁李晓华宋文杨晓伟
Owner SOUTHEAST UNIV
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