Image Descriptors for Displays
Image Descriptors for Displays
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显示图像描述符
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
R. W. Cohen
中科院分区：
文献类型：
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作者：
J. Mezrich;C. R. Carlson;R. W. Cohen
翻译后摘要：本报告总结了我们的实验和理论结果的感知显示的信息。本研究涉及四个问题：（1）颜色对模式识别的影响。(2)对图像场景中亮度和色度信息的统计估计的测量，（3）由显示调制转换中的变化引起的图像清晰度的感知变化之间的关系，以及（4）开发统一的显示描述符以模拟亮度和色度信息两者的感知。在这份报告中，我们提出了一系列实验的结果，建立了我们的清晰度描述符，视觉能力，和显示图像的主观清晰度之间的关系。图像清晰度的最小可察觉差异（jnd）作为显示带宽的函数进行测量。在高空间频率下，这些测量结果与显示清晰度是由图像的均方根梯度内容（与视觉容量的平方根成比例的量）介导的断言非常一致。在白色图像中加入色度信息对图像清晰度的感知没有明显的影响。最后，主观清晰度的测量结果为图片图像和单过渡亮度边缘被证明是无法区分的。我们认为，这一结果支持的论点，即边缘过渡是重要的，在确定图像清晰度的画面场景。
Abstract : This report summarizes our experimental and theoretical results on the perception of displayed information. This research is concerned with four issues: (1) the effect of color on pattern recognition. (2) the measurement of statistical estimates for luminance and chrominance information in pictorial scenes, (3) the relationship between perceived changes in image sharpness resulting from changes in display modulation transfer, and (4) the development of a unified display descriptor to model the perception of both luminance and chrominance information. In this report we present the results of a series of experiments that established the relationship between our sharpness descriptor, the visual capacity, and the subjective sharpness of displayed images. The just-noticeable difference (jnd) in image sharpness was measured as a function of display bandwidth. At high spatial frequencies these measurements were found to be in excellent agreement with the assertion that display sharpness is mediated by the perceived rms gradient content of an image: a quantity proportional to the square root of the visual capacity. The addition of chrominance information to a black-and-white image was not found to appreciably affect the perception of image sharpness. Finally, the measured results on the subjective sharpness for both pictorial images and single-transition luminance edges proved to be indistinguishable. We feel that this result supports the contention that edge transitions are important in determining image sharpness in pictorial scenes.