以影像為基礎的定位系統

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簡正昇(Cheng-Sheng Chien) 查詢紙本館藏

畢業系所

資訊工程學系在職專班

論文名稱

以影像為基礎的定位系統
(A visual-based positioning system)

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摘要(中)

我們參考了以影像做定位的一些研究，並在近幾年智慧型手機普及的基礎上，實作了一套以Android手機為運行環境，透過手機內建的相機進行即時影像分析，並融合手機中感測元件做姿態分析，完成實際可運行的定位系統，此系統的特色是不需要使用任何輔助裝置，可單獨在手機運行，環境建制費用極低，且可非常容易部署至一般消費者的智慧型手機上，實驗結果證明我們的定位系統在小範圍以及中範圍應用中提供優於GPS的定位精確度；在大範圍應用中，我們的系統也能夠提供足夠的精確度做為適地性服務及擴增實境領域的定位。

摘要(英)

We implemented a visual-based positioning system on the Android-based smartphone. This system uses only build-in camera and sensors in an Android phone. The system works with no other assisted equipments, so it is low-cost and very easy to deploy to consumers with a mobile device. In addition, we conducted small, median, and large-scale field experiments to examine the accuracy and stability of our system. The results indicate that our visual-based positioning system is able to provide a much better accuracy in small and median-scale experiments compared with the global positioning system. In large-scale experiments, the system is able to provide enough accuracy for applications such as virtual augmentations and location-based services.

關鍵字(中)

★ 定位系統
★ 影像處理
★ 智慧型手機
★ 擴增實境
★ 適地性服務

關鍵字(英)

★ positioning
★ LBS
★ android
★ Augmented Reality

論文目次

1 Introduction 1
2 Related Work 2
2.1 Existing Visual-based Positioning Systems 2
2.2 Filter Algorithms 3
2.2.1 Simple Moving Average Filter 3
2.2.2 Complementary Filter 3
3 Implementation 5
3.1 Notations 5
3.2 Measurable Reference Point (MRP) 5
3.3 Angle Measurement 6
3.4 Distance Measurement 7
3.4.1 Basic Case 8
3.4.2 MRP Shifted on Object Plane 8
3.4.3 Unparalleled Relationship 11
3.5 Coordinate System Transformation 12
3.6 Hardware 15
3.7 Software 15
3.8 Magnetic Noise Issue 16
3.9 Gyroscope Offset Issue 18
3.10 Startup Gyroscope Initial Values 18
4 Performance 19
4.1 Small-scale field experiments 19
4.2 Median-scale field experiments 22
4.3 Large-scale field experiments 24
5 Conclusions 27
Reference 29

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指導教授

孫敏德(Min-Te Sun)

審核日期

2013-8-23

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