Ravikumar Sowmya, Akeley Kurt, Banks Martin S
Vision Science Program, University of California Berkeley, California 94720, USA.
Opt Express. 2011 Oct 10;19(21):20940-52. doi: 10.1364/OE.19.020940.
Focus cues are incorrect in conventional stereoscopic displays. This causes a dissociation of vergence and accommodation, which leads to visual fatigue and perceptual distortions. Multi-plane displays can minimize these problems by creating nearly correct focus cues. But to create the appearance of continuous depth in a multi-plane display, one needs to use depth-weighted blending: i.e., distribute light intensity between adjacent planes. Akeley et al. [ACM Trans. Graph. 23, 804 (2004)] and Liu and Hua [Opt. Express 18, 11562 (2009)] described rather different rules for depth-weighted blending. We examined the effectiveness of those and other rules using a model of a typical human eye and biologically plausible metrics for image quality. We find that the linear blending rule proposed by Akeley and colleagues [ACM Trans. Graph. 23, 804 (2004)] is the best solution for natural stimuli.
在传统立体显示中，聚焦线索是不正确的。这会导致双眼视轴辐辏与调节的分离，进而引发视觉疲劳和感知失真。多平面显示器可以通过创建近乎正确的聚焦线索来将这些问题最小化。但是，要在多平面显示器中营造出连续深度的外观，就需要使用深度加权混合：即在相邻平面之间分配光强。阿克利等人[《美国计算机协会图形学汇刊》23, 804 (2004)]以及刘和华[《光学快报》18, 11562 (2009)]描述了截然不同的深度加权混合规则。我们使用典型人眼模型和具有生物学合理性的图像质量指标，研究了这些规则以及其他规则的有效性。我们发现，阿克利及其同事[《美国计算机协会图形学汇刊》23, 804 (2004)]提出的线性混合规则是针对自然刺激的最佳解决方案。
