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Visual comfort prediction based on saliency adaptation and visual comfort enhancement method based on nonlinear mapping

A non-linear mapping and self-adaptive technology, used in television, electrical components, stereo systems, etc., can solve problems such as inconspicuousness, achieve good correlation, reduce complexity, and avoid parallax adjustment.

Inactive Publication Date: 2016-09-28
XIDIAN UNIV
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Problems solved by technology

However, when the disparity range of the original image exceeds the determined visual comfort zone, the effect of reducing visual discomfort by this method will not be obvious

Method used

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  • Visual comfort prediction based on saliency adaptation and visual comfort enhancement method based on nonlinear mapping
  • Visual comfort prediction based on saliency adaptation and visual comfort enhancement method based on nonlinear mapping
  • Visual comfort prediction based on saliency adaptation and visual comfort enhancement method based on nonlinear mapping

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Embodiment Construction

[0046] refer to figure 1 , the implementation steps of the present invention are as follows:

[0047] Step 1. Significant estimation

[0048] 1a) Read in the left view image I of a 2D color image l , using the GBVS saliency map extraction method to obtain the corresponding color saliency map S I ;

[0049] 1b) read in the left viewpoint image I of the 2D color image l and the right view image I r , using the DERS estimation method to obtain the corresponding disparity saliency map S D ;

[0050] Step 2. Synthesize a salient adaptive disparity map

[0051] 2a) First to S I Perform normalization processing to convert its pixel value into a double-precision value in the range of [0,1] to indicate its significance. If the pixel value of a certain point is closer to 0, it indicates that the point is less significant; if the pixel value of a certain point is closer to 1, it indicates that the point is more significant. Normalization formula: where S I (x, y) represents ...

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Abstract

The invention belongs to the technical field of 3D display, and particularly discloses a visual comfort prediction and non-linear mapping visual comfort enhancement method based on saliency self-adaptability. The method includes the implementation steps that firstly, a color saliency map and a parallax saliency map of images are extracted; secondly, the color saliency map is normalized, a normalization value serves as a weight and is multiplied by the parallax saliency map, and then a saliency self-adaptability parallax map is acquired; thirdly, saliency discomfort regions are extracted through threshold segmentation; fourthly, parallax characteristics are extracted, visual comfort is estimated based on SVR, VC values are calculated, and visualization operation is conducted; fifthly, non-linear mapping is conducted on the saliency self-adaptability parallax map; sixthly, through the DIBR technology, the mapped parallax map and an original right view serve as input, and virtual images are synthesized. The predicted visual comfort is higher in relevance compared with visual comfort acquired through subjective evaluation, excessive parallax is reduced, saliency information of the images is kept, the visual comfort of the three-dimensional images is improved, and the method can be widely used for 3D display.

Description

technical field [0001] The invention belongs to the technical field of 3D stereoscopic display, and relates to a method for predicting and enhancing visual comfort, which can be used in stereoscopic display with high requirements for comfort, in particular to a visual comfort prediction and non-linear mapping method based on significant self-adaptation Visual comfort enhancement method. Background technique [0002] With the rapid development of 3D stereoscopic display technology, people can personally experience the double impact of 3D on vision and perception. But there are some crucial problems in the process of stereo viewing, such as: visual discomfort, visual fatigue and so on. For the widespread use of stereoscopic display technology, it is necessary to create a comfortable and safe viewing environment for viewers. There are many factors that cause visual discomfort, including excessive parallax, mismatch of left and right images, conflict of depth information, etc....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00H04N13/00
Inventor 郑喆坤刘红民王帅崔玉金重圭尹仁龙权炳贤
Owner XIDIAN UNIV
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