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首页> 外文期刊>Motion Imaging Journal, SMPTE >High Frame Rates and Human Vision: A View through the Window of Visibility
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High Frame Rates and Human Vision: A View through the Window of Visibility

机译：高帧率和人类视觉：透过可见窗观看

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摘要

There is new interest in higher frame rates for digital cinema. The frame rate and subsequent processing have a large impact on the presence of artifacts in the final presentation. The structure of these artifacts is revealed by transforming the sequence of frames into the spatiotemporal frequency domain. The visibility of these artifacts can be determined through application of a tool called the window of visibility. This is a simplified representation of human visual sensitivity to spatial and temporal frequencies. This paper describes the capture and display of movies in signal processing terms. It shows how the several steps in the process can by represented in space and time and in spatial and temporal frequency. It then introduces the window of visibility as a simplified version of the human visual contrast sensitivity function. It shows how the tool can be used to compute the lowest artifact-free frame rate under simplified circumstances. It also shows how it can be used to visualize the impact of various steps in processing the image sequence. Finally, the paper describes the influence of luminance, eccentricity, color, and eye movements on the size and shape of the window of visibility. In conclusion, the tool provides a useful aid to understanding the role of human visual sensitivity in the selection of frame rates and frame processing. The paper also provides an interactive demonstration that allows exploration of the trade-offs in movie capture and display.
机译：人们对数字电影的更高帧速率有了新的兴趣。帧速率和后续处理对最终呈现中伪像的存在有很大影响。这些伪像的结构是通过将帧序列转换到时空频域来揭示的。这些伪影的可见性可以通过应用称为可见性窗口的工具来确定。这是人类对空间和时间频率的视觉敏感性的简化表示。本文以信号处理术语描述了电影的捕获和显示。它显示了过程中的几个步骤如何以时空，时空频率表示。然后，它引入了可见性窗口，作为人类视觉对比敏感度功能的简化版本。它显示了该工具如何在简化的情况下用于计算最低的无伪像帧速率。它还显示了如何使用它来可视化处理图像序列中各个步骤的影响。最后，本文描述了亮度，偏心率，颜色和眼睛运动对可见窗口的大小和形状的影响。总之，该工具为理解人类视觉敏感性在帧速率选择和帧处理中的作用提供了有用的帮助。本文还提供了一个交互式演示，可以探讨电影捕获和显示之间的取舍。

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