嵌入式多投影機拼接系統設計和實作

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姜智文(Jhih-wun Jiang) 查詢紙本館藏

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資訊工程學系

論文名稱

嵌入式多投影機拼接系統設計和實作
(Design and Implementation of An Embedded Multi-Projectors Stitching System)

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摘要(中)

在大型展覽活動場合常會看到多投影機拼接投影的應用，但一般的多投影拼接系統均需透過人工的方式來安裝和校正，在投影機數量很大的情況下，這種方式非常耗費人力時間，而且不具環境的適應性。本論文提出一個以攝影機為基礎的自動化建置多投影機拼接系統的方法，基於此一方法，我們設計並實作出一個嵌入式多投影機拼接系統。此一系統採用主從(master/slave)架構，master和slave的控制器皆以ARM Cortex-A8嵌入式處理器為核心，master控制器藉由攝影機取得多台投影機的投影資訊，進行個別投影機的幾何校正與兩台投影機的重疊區域亮度校正，slave控制器則負責每一台投影機的顯示控制。進而實現一個無接縫的多投影機自動拼接系統。實驗顯示，我們的系統具有良好的投影拼接品質和傑出的同步機制。

摘要(英)

The application of multi-projector is often seen in a large exhibition. In general, multi-projector display system should be manually installed and calibrated by human. It is time-consuming and non-adaptable for the environment variation.
We proposed a camera-based automatic multi-projector stitching method and implemented it into an embedded multi-projector display system. The system is consisted by a master controller and two or multiple slave controllers. The master controller captures the display images from all the projectors by camera and executes the geometric calibration and the brightness calibration for the overlap projection region between two projectors. The slave controllers serve for the display control of individual projector. Finally, a seamless multi-projector automatic stitching system is realized. Experiments show that our embedded multi-projector display system has good stitching quality as well as excellent synchronization mechanism.

關鍵字(中)

★ 多投影機
★ 主從式
★ 幾何校正
★ 亮度校正
★ 自動化
★ ARM Cortex A8

關鍵字(英)

論文目次

摘要 I
ABSTRACT II
目錄 III
圖目錄 V
表目錄 VIII
第一章緒論 1
1.1研究動機 1
1.2論文架構 2
第二章文獻探討 3
2.1以攝影機為基礎的多投影機拼接 3
2.2多投影機拼接方法 5
2.2.1幾何校正 5
2.1.2色彩校正 7
2.3多投影機同步 15
第三章多投影機拼接投影 17
3.1構想 17
3.1.1 系統流程圖 18
3.2 多投影機拼接方法 19
3.2.1影像前處理 19
3.2.2幾何校正 22
3.2.3透視轉換(Perspective Transform) 24
3.2.4重疊區域亮度校正 26
3.2.5 建立轉換對照表 27
3.2.6影像插補 28
第四章嵌入式多投影機拼接投影系統 29
4.1嵌入式硬體 29
4.1.1 BeagleBone實驗板 29
4.1.2 DVI-D模組 31
4.1.3 攝影機模組 32
4.1.4 乙太網路(Ethernet)模組 32
4.1.5 嵌入式硬體架構 33
4.2 嵌入式軟體 34
4.2.1 嵌入式軟體環境架設 34
4.2.2嵌入式軟體開發平台 35
4.2.3 系統整合 36
第五章系統整合驗證與實驗 39
5.1實驗環境 39
5.2多投影機拼接系統實作與驗證 41
5.2.1幾何校正 41
5.2.2重疊區域亮度校正 44
5.2.3同步投影實驗 48
5.3實驗結果討論 50
第六章結論與未來研究方向 51
6.1結論 51
6.2 未來研究方向 51
參考文獻 52

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指導教授

陳慶翰

審核日期

2013-7-2

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