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Method for measuring dynamic definition of display equipment

A technology for display equipment and measurement methods, applied in television, electrical components, image communication, etc., can solve the problems of no measurement index, difficult interpretation, and inability to fully represent the dynamic definition index of display devices, so as to achieve less misjudgment and higher accuracy High, easy to observe and judge the effect

Active Publication Date: 2012-02-01
MUDAN SHIYUAN ELECTRONICS BEIJING
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Problems solved by technology

But in terms of dynamic sharpness, there is no suitable measurement index; at present, only the China Electronic Video Industry Association has proposed an association standard for the measurement method of dynamic image sharpness of plasma digital TV. The definition of dynamic image clarity at the initial stage of research on dynamic image clarity, that is, when a dynamic image is displayed at a certain speed, the clarity of TV image details that the human eye can perceive, expressed in TV lines
However, it has been found through practice that this definition cannot fully characterize the dynamic definition index of the display device. figure 1 The test chart shown in the figure is measured, and it is difficult to interpret due to the movement of the entire image

Method used

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  • Method for measuring dynamic definition of display equipment
  • Method for measuring dynamic definition of display equipment
  • Method for measuring dynamic definition of display equipment

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Embodiment Construction

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0030] According to the definition of sharpness in terms of digital TV receiving equipment in SJ11324, image sharpness is defined as the degree of clarity of TV image details that can be perceived by human eyes, expressed in TV lines.

[0031] In the present invention, the corresponding dynamic sharpness is defined as follows: dynamic image sharpness is when the image moves at a certain speed, the human eye can detect the highest level of detail that is not lower than the detectable details when the image is still, expressed by TV lines .

[0032] According to this definition, if figure 2 As shown, the following measurement method is designed to measure the sharpness of dynamic images:

[0033] First, set the upp...

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Abstract

The invention relates to a method for measuring the dynamic definition of display equipment. The method comprises the following steps of: in various static definitions, respectively generating a static parallel line family and a moving parallel line family under the same static definition, observing the static parallel line family and the moving parallel line family, judging whether an electric vision line displayed by the moving parallel line family is bigger than or equal to an electric vision line displayed by the static parallel line family, and recording results; in all results, ranking the static definitions when the electric vision line displayed by the moving parallel line family is bigger than or equal to the electric vision line displayed by the static parallel line family, wherein the highest value of the static definitions is a dynamic definition. With the method, the static parallel line family and the moving parallel line family are more easy to observe and judge, wrong judgment cannot easily occur, and the measurement accuracy of the dynamic definition of the display equipment is high.

Description

technical field [0001] The invention relates to the field of image display, in particular to a method for measuring the dynamic definition of a display device. Background technique [0002] In the display application of video or television images, the display definition of the display device is a key index to evaluate the performance of the display device. With the wide application of new display devices such as LCD, PDP, etc., its static definition has been able to reach the level of 1080 lines. But in terms of dynamic sharpness, there is no suitable measurement index; at present, only the China Electronic Video Industry Association has proposed an association standard for the measurement method of dynamic image sharpness of plasma digital TV. The definition of dynamic image clarity in the initial research on dynamic image clarity refers to the clarity of TV image details that can be perceived by human eyes when a dynamic image is displayed at a certain speed, expressed in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
Inventor 徐康兴武晓光
Owner MUDAN SHIYUAN ELECTRONICS BEIJING
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