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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/83509


    Title: 螢幕精準色彩校正模式之研究;Study of Accurate Calibration Procedure on Color Display
    Authors: 李靈;Lee, Ling
    Contributors: 光電科學與工程學系
    Keywords: 螢幕校正;色彩;顯色;色差;傳統混色法;線性疊加混色法;光譜分析混色法;主成份分析;Accurate Calibration;Monitor;Color Difference;Traditional;Superposition analysis;Principal component analysis (PCA)
    Date: 2020-08-19
    Issue Date: 2020-09-02 15:44:51 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本論文探討如何改進顯示器的顯色精準度,尋求一有效的校正模
    式,期能大幅改進顯示器的顯示效能。首先,針對現行顯示器的顯色
    效果,進行實際量測、並分析其光度與色度的變化情形,從而建立其
    量化模型,藉由操控用灰階值與顯示器效能表現之間的光度、色度精
    確關係模型,提供顯示器光度與色度精確校正之應用。現行的校正方
    式,僅考慮光色分離的方式,利用三原色混色的原理做固定三原色的
    不同光度混色,最後再輔以線性轉換,試圖用以解決混色預測效果與
    實際呈色的差異,最後仍存在明顯不等的色差,使得每部顯示器無法
    完全達到相同的顯色表現。本研究提出線性疊加混色模型與光譜主成
    份混色模型,除了有效建立精準的光色混色模型,同時也藉由數據分
    析與模型建立的過程,推測出現行三原色混色模型疏失之處,從而提
    出顯示器架構所引進的三原色互相漏光透色之機制,造成當前顯示校
    正程序的高複雜度,也因此找到合理的精準預測模型,大幅而有效地
    降低各色階之色差,達成顯示器顯色之精確校正的目的。於此,相對
    於線性疊加混色模型,光譜主成份混色模型可提供較高的光色精準度,
    但其程序較為複雜。;The purpose of this thesis is to explore for an effective calibration
    process to highly improve the performance of displays. In such a way, the
    calibrated displays can present high quality contents with high accuracy
    both in photometric and in chromatic evaluation. Firstly, we have executed
    photometric and chromatic measurements on the performance of displays.
    After analyzing the measured data, several photometric and chromatic
    models between the controlling gray levels and display outputs of
    luminance and chromaticity have been established for each one of the
    primary color channels. With these photometric and chromatic models, the
    high accuracy calibration on a display is approached both in the
    photometric and the chromatic performance. Currently, the calibration
    process for a display is based on the color mixing among three fixed color
    primaries. By a linear transformation, the color difference between the
    color mixing prediction and the realistic performance of a display is
    expected to be diminished. However, we found a display does not work in
    such a simple way. That is why every display has its own exclusive
    performance even for the same contents. Here, we propose two effective models for the color mixing in displays. One is the linear superposition
    mixing model, and the other is the spectral principal component mixing
    model. Both of these two ways can effectively solve the unneglectable
    color shiting problems in displays. Accordingly, the leaking primary color
    can be well evaluated such as to have accurate calibration. The spectral
    principal component mixing model provides with much better accuracy
    than the linear superposition mixing model, while with more complicated
    procedures.
    Appears in Collections:[光電科學研究所] 博碩士論文

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