數位相機自動曝光機制之研究

Chaoyang University of Technology Institutional Repository > 資訊學院 > 資訊管理系、資訊科技研究所 > 博碩士論文 > Item 310901800/26519

Please use this identifier to cite or link to this item: http://ir.lib.cyut.edu.tw:8080/handle/310901800/26519

Title:	數位相機自動曝光機制之研究 Auto Exposure for Digital Camera
Authors:	吳得豪 Wu, Te-Hao
Contributors:	資訊管理系碩士班李朱慧 Chu-Hui Lee
Keywords:	場景;最適當曝光值;離散餘弦轉換;測光系統 scene;exposure;discrete cosine transformation;metering system
Date:	2008-12-31
Issue Date:	2016-01-08 15:35:51 (UTC+8)
Abstract:	由於現今科技的進步以及數位相機(Digital Camera)技術的成熟，加上使用者對於數位相機的接受度的提升，令數位相機一舉成為人們最為喜愛的消費性電子產品之一。目前市面上的數位相機皆內建包含許多基本的預設情境模式，但尚未有一套機制能即時的對各種不同的場景情境自動提供最適當的曝光值，一般而言，目前的數位相機測光系統都是將畫面正中央當成是主要的測光重點，當所要拍攝的主要物件不在正中央測光區域時，往往就無法得到最理想的曝光數值，因此就必須依照使用者自己的經驗來做調整。有鑑於此，本論文透過離散餘弦轉換的分析技術，並且發展一套能適用在任何場景，有能力自動找出最適當曝光值的機制，讓使用者不需有曝光值設定的知識也可以輕易的拍出好作品。 Because of nowadays technology progress, mature of digital camera and arise of acceptation for digital camera by users, digital cameras become one of the population electronic products. All of digital cameras sell on the market that include many basic exposure models, but no system can real-time provide the best exposure value for various scenes yet. At present, most metering system of digital cameras are focused on center, therefore digital camera always can’t get the optimal exposure value when objects are not located on center. For this reason, our researches use the discrete cosine transformation technique to develop a system that can find out the optimal exposure value for different scenes, so even if users have no experience about exposure setting also can take good photos.
Appears in Collections:	[資訊管理系、資訊科技研究所] 博碩士論文

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