基于感知意义的立体三维非对称编码

Sid Ahmed Fezza, M. Larabi, K. Faraoun
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引用次数: 4

摘要

非对称立体编码是一种很有前途的技术,可以减少立体3D传输所需的带宽。然而,一个很大的障碍与非对称编码的限制或不对称的明显阈值有关,因此3D观看体验不会改变。通过主观实验,最近的工作试图确定这种不对称阈值。然而,固定的阈值,高度依赖于实验设计,不允许适应图像质量和内容的变化。在本文中,我们提出了一种新的非均匀不对称立体编码,以动态方式调整每个图像区域的不对称程度,以确保双眼感知不变。这是通过利用几种hvs启发模型实现的;具体来说,我们使用双目可注意差异(BJND)结合视觉显著性图和深度信息来精确量化不对称阈值。仿真结果表明,与目前最先进的非对称编码方法相比,该方法可节省高达44%的比特率,并提供更好的3D视觉质量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Asymmetric coding of stereoscopic 3D based on perceptual significance
Asymmetric stereoscopic coding is a very promising technique to decrease the bandwidth required for stereoscopic 3D delivery. However, one large obstacle is linked to the limit of asymmetric coding or the just noticeable threshold of asymmetry, so that 3D viewing experience is not altered. By way of subjective experiments, recent works have attempted to identify this asymmetry threshold. However, fixed threshold, highly dependent on the experiment design, do not allow to adapt to quality and content variation of the image. In this paper, we propose a new non-uniform asymmetric stereoscopic coding adjusting in a dynamic manner the level of asymmetry for each image region to ensure unaltered binocular perception. This is achieved by exploiting several HVS-inspired models; specifically we used the Binocular Just Noticeable Difference (BJND) combined with visual saliency map and depth information to quantify precisely the asymmetry threshold. Simulation results show that the proposed method results in up to 44% of bitrate saving and provides better 3D visual quality compared to state-of-the-art asymmetric coding methods.
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