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Applications of vector space methods to the colorimetric problems of scanning filter selection and gamut mismatch compensation.

机译：向量空间方法在扫描滤波器选择和色域失配补偿的比色问题中的应用。

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摘要

This thesis consists of 3 independent chapters.; Chapter 1 is theoretical. It introduces the reader to colorimetry through the use of vector space concepts. Its first use is as a tutorial for the engineer/mathematician who is interested in basic principles of color science. Its alternate use is to introduce modern methods of analysis to those persons familiar with colorimetry.; Chapter 2 considers the problem of designing scanning filters for a color measurement device. The device is meant to characterize both luminous and reflective surfaces under either of 2 standard illuminants. It uses an internal set of light emitting diodes as illumination sources but gives accurate surface characterizations for both EE and D65 conditions. An optimization method is presented which minimizes the perception of color shifts due to non-ideal filters, while maintaining filter smoothness and robustness to noise.; Chapter 3 addresses the gamut mapping problem. The gamut of a device is a volume representing the colors which the device is capable of producing. We present a framework for specifying image and device gamuts, and develop a methodology for lightness-saturation mapping which tends to retain lightness and contrast of achromatic pixels while preserving hue and saturation of chromatic pixels. The mapping results in a marked improvement of display image quality over methods commonly used for displaying photo-CD images.
机译：本文由3个独立的章节组成。第1章是理论性的。它通过使用向量空间概念向读者介绍比色法。它的第一个用途是作为对颜色科学的基本原理感兴趣的工程师/数学家的教程。它的替代用途是向熟悉比色法的人介绍现代分析方法。第2章考虑了为颜色测量设备设计扫描滤镜的问题。该设备旨在同时表征两种标准光源下的发光表面和反射表面。它使用一组内部的发光二极管作为照明源，但针对EE和D65条件均提供了准确的表面特性。提出了一种优化方法，该方法使由于不理想的滤光片引起的色移感知最小化，同时保持滤光片的平滑度和对噪声的鲁棒性。第3章讨论色域映射问题。设备的色域是代表设备能够产生的颜色的体积。我们提出了一种用于指定图像和设备色域的框架，并开发了亮度-饱和度映射的方法，该方法倾向于保留非彩色像素的亮度和对比度，同时保留彩色像素的色相和饱和度。与通常用于显示照片CD图像的方法相比，该映射导致显示图像质量的显着改善。

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  • 作者

    Wolski, Mark Jonathan.;

  • 作者单位

    Purdue University.;

  • 授予单位 Purdue University.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 1994
  • 页码 97 p.
  • 总页数 97
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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