单眼与双眼对比和模糊对功能立体图谱范围的影响
Wei Hau Lew1, Daniel R Coates1
1University of Houston College of Optometry, Houston, TX, United States.
Vision research
|August 18, 2023
概括
图像质量显著影响刻板印象. 降低的对比度和增加的模糊性降低了差异灵敏度函数 (DSF) 的范围,特别是在单眼视觉中,影响了两种立体边界.
科学领域:
- 视觉科学 视觉科学 视觉科学
- 感知心理学 感知心理学
背景情况:
- 立体感,从双眼视觉感知深度的能力,依赖于底层立体值和上层融合极限.
- 以前的研究表明,减少对比度和模糊度会损害低立体值,特别是在单眼条件下,但它们对上限的影响不太清楚.
研究的目的:
- 调查对比度减小和光学模糊对差异感应函数 (DSF) 范围的影响.
- 为了确定这些图像退化如何影响立体声的下值和上值在立体声字母识别任务中.
主要方法:
- 利用一个立体字母识别任务与随机点立体图.
- 采用适应式楼梯来测量立体的下限和上限.
- 在不同的对比度 (100%,32%,10%) 和模糊 (+0.75DS,+1.25DS) 条件下测试了五个受试者,单眼和双眼.
- 一个交叉相关立体匹配算法被用于计算分析.
主要成果:
- 差异灵敏度函数 (DSF) 呈现出低通特性,导致在更高的空间频率下范围缩小.
- 较低的对比度和增加的模糊度提高了较低的立体声门,降低了合的上限,缩小了整体DSF范围.
- 这些效应在单眼观看条件下更加明显,尽管模糊引入了主体间的变化.
结论:
- 通过降低对比度和模糊度的图像退化,显著缩小了立体镜的功能范围.
- 核聚变的上限是容易降解的,这与之前的假设相反.
- 研究结果强调了图像质量对双眼视觉的重要性,并表明了对视觉显示技术的影响.
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