Contrast enhancement of multi-displays using human contrast sensitivity
Contrast enhancement of multi-displays using human contrast sensitivity
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使用人类对比敏感度增强多显示器的对比度
DOI：
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发表时间：
2005
期刊：
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通讯作者：
A. Majumder
中科院分区：
文献类型：
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作者：
A. Majumder
对人眼对比敏感度的研究表明，我们对低强度水平下的亮度差异比高强度水平下的亮度差异更敏感。我们有效地应用这一事实，以实现亮度无缝多投影显示。通常由部分重叠的投影仪的矩形阵列制成的多显示器显示亮度的严重空间变化。现有方法通过将每个像素的亮度响应与具有最有限对比度的像素匹配来实现整个显示器的亮度均匀性，从而导致显示器对比度的严重压缩。在本文中，我们提出了一种方法，它允许由人类对比敏感度函数引导的亮度的受约束的变化，使得人眼无法察觉。这实现了无缝的多显示器，对比度显著提高，使显示器实际上可用。
Study of contrast sensitivity of the human eye shows that we are more sensitive to brightness differences at low intensity levels than at high intensity levels. We apply this fact effectively to achieve brightness seamless-ness in multi-projector displays. Multi-displays, popularly made of a rectangular array of partially overlapping projectors, show severe spatial variation in brightness. Existing methods achieve brightness uniformity across the display by matching the brightness response of every pixel to the pixel with the most limited contrast leading to severe compression in the contrast of the display. In this paper, we propose a method that allows a constrained variation in brightness guided by the human contrast sensitivity function such that it is imperceptible to the human eye. This achieves a seamless multi-display with a dramatic improvement in the contrast making the display practically usable.