Abstract
Stereoscopic displays provide viewers with a truly fascinating viewing experience. However, current stereoscopic displays suffer from crosstalk that is detrimental to image quality, depth quality, and visual comfort. In order to reduce the perceived crosstalk in stereoscopic displays, this paper proposes a crosstalk reduction method that combines disparity adjustment and crosstalk cancellation. The main idea of the proposed method is to displace the visible crosstalk using the disparity adjustment in a way that less amounts of intensity leakage occur on perceptually important regions in a scene. To this purpose, we estimate a crosstalk visibility index map for the scene that represents pixel-by-pixel importance values associated with the amount of perceived crosstalk and negative-after-effects of the crosstalk cancellation. Based on the crosstalk visibility index, we introduce a new disparity adjustment method that reduces the annoying crosstalk in processed images, which is followed by the crosstalk cancellation. The effectiveness of the proposed method has been successfully evaluated by subjective assessments of image quality and viewing preference. Experimental results demonstrate that the proposed method effectively improves the image quality and overall viewing quality of stereoscopic videos.
Highlights
Stereoscopic 3D (S3D) display is a very powerful technology that provides the viewer with a truly unique visual experience
The rest of this paper is organized as follows: In Section 2, we present the overall process of the proposed crosstalk reduction method, which consists of an estimation of the crosstalk visibility index, disparity adjustment using the crosstalk visibility index, and crosstalk cancellation processes
In order to quantify the visibility of system crosstalk in a scene and displace the crosstalk regions according to the crosstalk visibility, the proposed crosstalk reduction method mainly consists of three consecutive processes: crosstalk visibility index estimation, disparity adjustment using the crosstalk visibility index, and crosstalk cancellation
Summary
Stereoscopic 3D (S3D) display is a very powerful technology that provides the viewer with a truly unique visual experience. Any partial compensation of the system crosstalk may mitigate the loss of image quality caused by the intensity mapping while still lowering the visibility of system crosstalk to a certain acceptable level Balancing such a tradeoff is not always feasible given a diversity of scene content characteristics. Humans have a limited ability to distinguish the difference in intensities, well known as Weber’s law [18] This implies that, given the level of system crosstalk, perceptual significance of the uncorrectable regions can be different according to the scene content characteristics. The proposed disparity adjustment aims at displacing the perceivable crosstalk regions in a scene in a way that less amounts of intensity leakage occur on the perceptually important regions To this purpose, disparity shifting is used to adjust the extent of uncorrectable regions, which have dominant effect on the overall crosstalk visibility.
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