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Method for measuring visual perception quality of two-dimensional optical stimulation quantity

A technology of visual perception and measurement methods, applied in the interdisciplinary field of psychophysics and computer science, to achieve the effect of intelligent optimization of imaging

Pending Publication Date: 2022-01-04
CHONGQING MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no testing technique for the psychophysical quantity such as the visual perception quality of two-dimensional stimuli, so it is very necessary and timely to propose a testing technique for the visual perception quality of two-dimensional stimuli

Method used

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  • Method for measuring visual perception quality of two-dimensional optical stimulation quantity
  • Method for measuring visual perception quality of two-dimensional optical stimulation quantity
  • Method for measuring visual perception quality of two-dimensional optical stimulation quantity

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no. 1 example

[0111] The first embodiment: a series of sub-images with different average brightness obtained under 6 different illuminances of the object called Office (abbreviated Of object), including 6 color images with different illuminance and 6 grayscale images with different illuminance, See details figure 2 .

[0112] Since the present invention involves image recognition calculations, color pictures need to be demonstrated during the calculation process, so color pictures are used in the accompanying drawings. If corrections are required, please postpone the revision until the substantive review stage.

[0113] The above 6 images with different illuminance were used as the two-dimensional optical stimulus, and the above steps were used for calculation and demonstration, and the data shown in Table 1 were obtained. Combining with Table 1, it can be seen that its visual quality first increases and then decreases with the increase of average brightness, which has a convex characteri...

no. 2 example

[0121] The second embodiment: use the object called Patio (abbreviated as P object), its 6 series of sub-images with different average brightness obtained under different illuminances, including 6 color images and 6 grayscale images, the series of sub-images as two Dimensional stimulus amount, see the specific image series for details image 3 .

[0122] Combining with Table 2, it can be seen that the visual quality of the series of images first increases and then decreases with the increase of the average brightness, which has a convex characteristic. Its average brightness, visual perception quality PQ(AL), normalized visual perception quality NPQ(AL), and normalized visual perception quality distance DNPQ(AL) are listed in rows 2, 3 and 4 of Table 2, respectively. AL is also included in the table OPT predictive value and its visual perceptual quality PQ(AL OPT ), normalized visual perceptual quality NPQ(AL OPT ), normalized visual perceptual quality distance DNPQ(AL OP...

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Abstract

The invention discloses a method for measuring the visual perception quality of a two-dimensional optical stimulation quantity. The method comprises the following steps: on the basis of constructing a visual perception quality PQ (AL) expression, further defining an expression of normalized two-dimensional optical stimulation quantity image perception quality NPQ (AL) and a normalized visual perception quality distance DNPQ (AL), and detecting the visual perception quality of the image by means of the average brightness data of the image. The method has the advantages that the quantitative relation between the physical quantity and the psychological quantity is established, and accurate quantification of the psychological quantity is achieved. The method can be used for evaluating image quality and screening required images. An image with optimal quality can be obtained and intelligent optimal imaging can be achieved.

Description

technical field [0001] The invention relates to the interdisciplinary field of psychophysics and computer science, in particular to a method for measuring the visual perception quality of two-dimensional optical stimulation. Background technique [0002] Human feeling is a kind of mental activity, and it is difficult to quantify mental activity. The methods for measuring the psychological perception of physical quantities include the Weber_Fechner logarithmic method, and the power function method of Stevens et al. But human feeling is also the way for human beings to acquire knowledge and respond to the external environment. Without human hearing there would be no acoustics, only mechanical waves. Sound waves are part of the mechanical waves that the human auditory system can perceive. Likewise, without human vision, there would be no optics, only electromagnetic waves. Light waves are part of the electromagnetic waves that the human visual system can perceive. Human he...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/13G06T7/90
CPCG06T7/13G06T7/90G06T5/92
Inventor 谢正祥王志芳王体春刘玉红陈龙聪
Owner CHONGQING MEDICAL UNIVERSITY