Measuring method of normalization contrast ranges affecting comfort levels of three-dimensional pictures
A technology of stereoscopic image and measurement method, which is applied in the direction of stereoscopic system, image communication, television, etc., can solve problems such as inability to meet, unstable and inaccurate measurement method, and achieve the effect of high accuracy and stability
Active Publication Date: 2014-11-19
TIANJIN UNIV
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[0007] At present, there is no uniform standard for judging the comfort level of stereoscopic images. Most of the research at home and abroad is to study the various factors that affect the comfort level of stereoscopic images from the qualitative aspect. There is no quantitative research on the impact of contrast on the comfort level of stereoscopic images. Therefore, it is impossible to accurately determine the influence of contrast factors on the comfort of stereoscopic images, making the measurement method unstable and imprecise, and unable to meet the needs of practical applications
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[0045] 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.
[0046] In order to study the influence of contrast factors on the comfort of binocular stereo images from a quantitative perspective, and improve the stability and accuracy of the measurement method, the embodiment of the present invention provides a measurement of the normalized contrast range that affects the comfort of stereo images method, see Figure 16 , the method includes the following steps:
[0047] 101: Segment the source stereoscopic image to generate the source left and right views, perform color space conversion RGB→YCbCr on the source left and right views, and extract the brightness index Y respectively to obtain the grayscale images of the source left and right views;
[0048] The RGB color model is a unit cube in a th...
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The invention discloses a measuring method of normalization contrast ranges affecting comfort levels of three-dimensional pictures and relates to the fields of comfort level evaluation of the three-dimensional pictures and processing of the three-dimensional pictures. A large quantity of experimental data are obtained through a subjective evaluation experiment based on human vision system characteristics and stereoimaging technology principles, a normalization contrast matching picture of the three-dimensional pictures and a normalization contrast difference picture of the three-dimensional pictures are obtained through a least square piecewise linearity fitting method and can be used for evaluating whether the given three-dimensional pictures are comfortable or not, finally universality of the two pictures is further tested through example illustration, and influences of contrast elements on the comfort levels of the binocular three-dimensional pictures are studied from a quantitative angle.
Description
technical field [0001] The invention relates to the fields of stereoscopic image comfort evaluation and stereoscopic image processing, in particular to a method for measuring a normalized contrast range that affects stereoscopic image comfort. Background technique [0002] With the maturity of planar image compression, transmission and display technology, stereoscopic imaging technology has gradually become a research hotspot at home and abroad. This technology mainly includes the generation, transmission, compression, and display of stereoscopic images. Since stereoscopic images can provide spatial depth information of natural scenery, reproduce real scenes, and make viewers feel personally on the scene, stereoscopic imaging technology will definitely It will become the development trend of information technology and image display technology in the future. However, watching stereoscopic images for a long time will cause different degrees of human visual discomfort (such as...
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IPC IPC(8): H04N17/02H04N9/64H04N13/00H04N15/00
Inventor 李素梅刘畅侯春萍
Owner TIANJIN UNIV