Dichoptic tone mapping methods aim to leverage stereoscopic displays to increase visual detail and contrast in images and videos. These methods, which have been called both binocular tone mapping and dichoptic contrast enhancement , selectively emphasize contrast differently in the two eyes’ views. The visual system integrates these contrast differences into a unified percept, which is theorized to contain more contrast overall than each eye’s view on its own. As stereoscopic displays become increasingly common for augmented and virtual reality (AR/VR), dichoptic tone mapping is an appealing technique for imaging pipelines. We sought to examine whether a standard photographic technique, exposure bracketing, could be modified to enhance contrast similarly to dichoptic tone mapping. While assessing the efficacy of this technique with user studies, we also re-evaluated existing dichoptic tone mapping methods. Across several user studies; however, we did not find evidence that either dichoptic tone mapping or dichoptic exposures consistently increased subjective image preferences. We also did not observe improvements in subjective or objective measures of detail visibility. We did find evidence that dichoptic methods enhanced subjective 3D impressions. Here, we present these results and evaluate the potential contributions and current limitations of dichoptic methods for applications in stereoscopic displays.

中文翻译：

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双色映射的再研究

Dichoptic色调映射方法旨在利用立体显示器来增加图像和视频的视觉细节和对比度。这些方法被称为双目色调映射和双视对比度增强, 在两只眼睛的视图中选择性地强调不同的对比度。视觉系统将这些对比度差异整合到一个统一的感知中，理论上它包含比每只眼睛本身的视图更多的整体对比度。随着立体显示在增强现实和虚拟现实 (AR/VR) 中变得越来越普遍，二分光色调映射是成像管道的一种有吸引力的技术。我们试图检查是否可以修改标准摄影技术，曝光包围，以增强对比度，类似于二分光色调映射。在通过用户研究评估该技术的有效性的同时，我们还重新评估了现有的二分光色调映射方法。通过多项用户研究；然而，我们没有发现证据表明二分光色调映射或二分光曝光持续增加主观图像偏好。我们也没有观察到细节可见性的主观或客观测量的改进。我们确实发现了二分法方法增强主观 3D 印象的证据。在这里，我们展示了这些结果，并评估了双光方法在立体显示器中的潜在贡献和当前限制。