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Method for measuring brightness range influencing comfort degree of stereoscopic image

A technology of stereo image and measurement method, which is applied in stereo systems, image communication, television and other directions, can solve problems such as inability to meet, inaccurate, and unstable measurement methods.

Active Publication Date: 2012-06-13
TIANJIN UNIV
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Problems solved by technology

[0006] Research at home and abroad is to study the factors that affect the comfort of stereoscopic images from the qualitative aspect. There is no literature on quantitative research on these influencing factors, which makes the measurement method unstable and inaccurate, and cannot meet the needs of practical applications.

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  • Method for measuring brightness range influencing comfort degree of stereoscopic image
  • Method for measuring brightness range influencing comfort degree of stereoscopic image
  • Method for measuring brightness range influencing comfort degree of stereoscopic image

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Embodiment Construction

[0059] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0060] Among all the factors, human eyes are more sensitive to the change of image brightness. Therefore, the influence of brightness factors on binocular stereo image comfort is firstly studied from a quantitative point of view.

[0061] 101: Obtain the first-level step size, the second-level step size, and the third-level step size according to the maximum value and the minimum value of the brightness parameter of the source stereo image;

[0062] The limit method in the subjective evaluation method means that the experimenter first changes a certain variable in the form of a stepwise monotonous increase (rise) or decrease (decrease), and then asks the subjects to judge the change point, which is the critical point (threshold point),...

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Abstract

The invention discloses a method for measuring a brightness range influencing the comfort degree of a stereoscopic image. The method comprises the following steps of: performing brightness processing on unqualified views on the boundary of a stereoscopic grayscale image with a first qualified comfort degree according to a secondary step length to obtain a plurality of secondary stereoscopic grayscale images; performing the brightness processing on unqualified views on the boundary of the stereoscopic grayscale image with a second qualified comfort degree according to a tertiary step length to obtain a plurality of tertiary stereoscopic grayscale images; processing the tertiary stereoscopic grayscale images according to a preset rule to obtain tertiary stereoscopic grayscale views of which a statistical average value is more than or equal to 4, and defining the tertiary stereoscopic grayscale views as stereoscopic grayscale images with a third qualified comfort degree; performing fitting by using a piecewise linear least squares fitting method to obtain a stereoscopic image comfortable brightness matching map and a stereoscopic image comfortable brightness difference map; and computing an average value of the two maps to obtain a brightness comprehensive piecewise linear and brightness difference comprehensive piecewise linear fitting straight line. Researches on the influence of a brightness factor on the comfort degree of a binocular stereoscopic image are made quantitatively.

Description

technical field [0001] The invention relates to the field of stereoscopic image comfort evaluation and 3D image processing, in particular to a method for measuring the brightness range that affects the stereoscopic image comfort. Background technique [0002] At present, there is a lack of a scientific system and industry-unified standards for the measurement and determination of stereoscopic image / video comfort, and domestic and foreign experts and scholars have limited research on factors affecting stereoscopic image / video comfort. [0003] In foreign countries, Frank L. Kooi systematically and qualitatively studied various factors that affect the comfort of binocular stereo images through experiments, such as brightness, chroma, contrast, crosstalk, parallax, etc. The experimental results show that as long as the two views of the stereo image If the matching degree exceeds a certain threshold, its visual comfort will be seriously reduced [1] . Pieter J.H.Seuntiens carri...

Claims

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Application Information

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IPC IPC(8): H04N13/00H04N15/00H04N17/00
Inventor 李素梅臧艳军刘畅侯春萍
Owner TIANJIN UNIV
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