Method for measuring brightness range influencing comfort degree of stereoscopic image

A technology of stereoscopic images and measurement methods, which is applied in stereoscopic systems, image communications, televisions, etc., and can solve problems such as unstable, unsatisfactory, and inaccurate measurement methods

Active Publication Date: 2014-05-07
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 objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0060] Among all the factors, the human eye is more sensitive to the changes of image brightness. Therefore, firstly, the influence of brightness factors on the comfort of binocular stereo images is studied from a quantitative perspective.

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

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

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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 3D image comfort evaluation and 3D image processing, in particular to a method for measuring the brightness range that affects the comfort of the stereo image. Background technique [0002] At present, there is a lack of scientific systems and industry-uniform standards for the measurement and determination of the comfort of stereo images / videos, and domestic and foreign experts and scholars have limited research on the factors affecting the comfort of stereo images / videos. [0003] In foreign countries, Frank L. Kooi systematically and qualitatively studied various factors that affect the comfort of binocular stereoscopic images through experiments, such as brightness, chroma, contrast, crosstalk, and parallax. The experimental results show that as long as the two stereoscopic images are not If the matching degree exceeds a certain threshold, its visual comfort will be seriously reduced [1] . Pieter J.H. Seuntiens condu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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