博碩士論文 945302019 詳細資訊

姓名 郭文賢(Wen-hsien Kuo)  查詢紙本館藏   畢業系所 資訊工程學系在職專班
論文名稱 智慧型百萬像素網路攝影機影音串流處理與即時警報訊息傳遞機制之研究
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摘要(中) 隨著電腦科學進步和社會對安全環境的迫切需要,以電腦視覺為基礎的智慧型監控系統,成為近年來熱門的研究主題。此系統為因應在許多不同的領域上,如影像辨識系統、即時警報系統或整合型圖控系統等,高畫面品質及加入智慧型監控處理機制已為未來不可抵擋的趨勢。但高畫質伴隨著高資料量,在網路頻寬尚未達到理想寬度時,降低資料傳輸量以及影音串流處理成為新一代的課題:影像壓縮技術由MJEG、MPEG4到現今的H.264,多種壓縮格式提供使用者更完善的應用環境。MJEG有較高畫面品質但其壓縮率相較於其他影像壓縮格式顯得略高,故適合區域型監控應用、儲存不失真影像呈堂證供應用和區域監控設備影像辨識應用。MPEG4優缺點介於MJEG及H.264之間,屬於過渡型的影像壓縮格式。H.264畫面品質雖沒有MJEG高,但有著高壓縮率的優勢,故適合應用廣域型監控應用、提高硬碟儲存空間和提高影像串流資料的流通性。
現今系統除了要強調高畫面品質同時需要即時網路傳輸,但往往高畫質所需資料量相對較高,制定多媒體影音格式目標在於提供高畫質低資料量,一直是很熱門的話題和研究。逐漸崛起影音格式H.264 利用很多不同以往的編碼和預測方式,可容易達到高品質且高壓縮位元率的目的。除此之外,實務上對於影像串流機制,如何在高資料量的環境下嵌入即時訊息告知終端,以及如何即時有效率的方式傳輸高資料量畫面,一直是許多監控廠商無法突破的困境。本篇論文針對百萬像素H.264影像串流提出一種方法,有效解決此問題,實驗部分是實作於嵌入式系統中,完成方法的驗證。
摘要(英) The purpose of this study is to design a network camera system to be used in securing user’s environment and safety. The designed system possesses some important characteristics, such as real time, high accuracy, automatic, networking, and digitization. Moreover, the system is simply composed of network camera and personal computer. The intention of this research is to utilize the network camera as a monitoring device to expand the scope of traditional monitor.
Until recently, video security and surveillance were accomplished using Closed Circuit Television or CCTV which included analog cameras, coaxial cable and video tape recorders. Video security and surveillance started entering the digital age with the advent of CCD sensors which digitized image capture in the camera. However, transmission was still analog via coax to analog VCR’’s.
Network camera is a stand-alone device which allows a user to view live and full motion video from anywhere on a computer network. In addition, it can simply allow user to use standard web-browser even over the internet. In general, the entire system has now been digitized with the introduction of network cameras incorporating on board processors and web server software. These network cameras can be connected directly to existing IP networks to eliminate the need of separate and expensive coaxial cable networks. Images can be viewed through the cameras and managed from anywhere via a web browser. With the adding of hard disk on the network, videos can be recorded.
The main theme of this research is to discuss how the video streaming works under internet environment and consider the remote side to issue alarm message in real time. We have implemented the proposed system practically and the implemented system works as expected.
關鍵字(中) ★ 影音串流
★ 即時警報訊息
★ 網路攝影機
關鍵字(英) ★ RTSP
★ streaming live
★ H.264
論文目次 Abstract II
摘要 III
誌謝 IV
附圖目錄 VI
表格目錄 VII
附錄目錄 VIII
第一章 緒論 1
1.1 研究動機 1
1.2 相關研究 3
1.3 實驗環境與系統架構 4
1.4 論文架構 6
第二章 文獻探討 7
2.1 網路傳輸 7
2.2 H.264簡介 11
第三章 網路攝影機應用平台簡介 18
3.1 系統簡介 18
3.2 系統規格 19
3.3 系統軟體規劃 19
第四章 影像串流傳輸方法 20
4.1 即時影像串流傳輸機制 20
4.2 網路流量控制機制 25
4.3 影像串流完整性處理機制 29
4.4 即時警報訊息傳遞機制 32
第五章 實驗設計與分析 34
5.1 即時封包傳遞TCP與UDP比較與分析 34
5.2 網路流量控制比較與分析 37
5.3 影像串流完整性比較與分析 41
5.4 即時警報訊息傳遞比較與分析 43
第六章 結論與未來研究方向 45
6.1 結論 45
6.2 未來研究方向 45
參考文獻 47
附錄 49
附錄A GM-8180網路攝影機規格 49
參考文獻 [1]H. Schulzrinne, “RTP Profile for Audio and Video Conferences with Minimal Control,” RFC 1890, Internet Engineering Task Force, January 1996.
[2]H. Schulzrinne, S. Casner, R. Frederick, and V. Jacobson, “RTP: A Transport Protocol for Real-Time Applications,” RFC 1889, Internet Engineering Task Force, January 1996.
[3]Stephan Wenger, “H.264/AVC Over IP,” IEEE Transactions on circuits and systems for video technology, vol. 13, p. 7, July 2003.
[4]畢厚杰,”新一代視頻壓縮標碼標準-H.264/AVC,”人民郵電出版社,vol. 6,pp. 84-100,September 2007.
[5]“ITU-T Rec. H.264/ISO/IEC 14 496-10 AVC,” Draft ITU-T Recommendation and Final Draft International Standard of Joint Video Specification , Mar. 2003.
[6]A. Tamhankar and K. R. Rao, “An overview of H.264/MPEG-4 Part 10,” The 4th EURASIP Conference focused on Video/Image Processing and Multimedia Communications, vol. 1, pp. 1-51 July 2003.
[7]A. Chang, O. C. An, and Y. M. Yeung, “A novel approach to fast multi-frame selection for H.264 video coding,” Proceedings of 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, vol. 3, pp. 413-416, April 2003.
[9]Ostermann, J. Bormans, J. List, P. Marpe, D. Narroschke, M. Pereira, F.Stockhammer and T. Wedi, “Video coding with H.264/AVC: tools, performance, and complexity,” IEEE Trans. Circuits and Systems Magazine IEEE, vol. 4, Issue 1, First Quarter pp.7-28 , 2004.
[10]T. Wiegand, G. J. Sullivan, G. Bjøntegaard, and A. Luthra, “Overview of the H.264/AVC video coding standard,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 13, no. 7, pp. 560-576, July 2003.
[12]“GM8180_EVB_UserGuide_v1.3,”Faraday technology corporation, September 2007.
[13]曾現鈞, “H.264 先進視訊編碼概述.ppt,”國立台北科技大學.
[14]T. Wiegand, G. J. Sullivan, G. Bjøntegaard, and A. Luthra, “Overview of the H.264/AVC video coding standard, ”IEEE Transactions on Circuits and Systems for Video Technology, vol. 13, no. 7, pp. 560-576, July 2003.
指導教授 范國清(Kuo-Chin Fan) 審核日期 2008-7-17
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