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科技與工程學院
電機工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73890
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search.filters.author.Lien-Yang Chen
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search.filters.author.陳聯暘
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search.filters.subject.digital camera
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search.filters.subject.dynamic range reduction
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search.filters.subject.histogram equalization
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search.filters.subject.Tone reproduction
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search.filters.subject.動態範圍壓縮
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2007
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數位相機之色調重現演算法設計
(
2007
)
陳聯暘
;
Lien-Yang Chen
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色調重現是藉由調整或映射高動態範圍影像,保存原始所看到影像的亮度以及更好的對比度,以獲得真實影像的色調呈現。本論文提出一個影像色調調整的方法,並且整合到我們所開發的穩健的彩色影像處理流程中。藉由影像的巨集邊緣資訊,將巨集邊緣統計分佈圖等化重新分佈,等化分佈的過程中尋求每張圖的色調曲線特性。經由實驗證明,我們提出的色調重現演算法能適應各種場景及環境光源,改善影像的對比及色彩的鮮明度。 除了在PC模擬之外,我們也將演算法移植到嵌入式系統發展版上。針對系統板的特性及加速執行運算速度,改變變數的宣告型態成為整數以及利用查表法技巧。實驗結果證明提出的演算法能適應於一般的嵌入式系統中,並且執行消耗的功率低於個人電腦執行的消耗功率。
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