臺灣博碩士論文加值系統

近年來因為資通訊的蓬勃發展，以及數位化廣泛的應用，使得人們希望能夠透過資訊數位化的方式，提昇資訊可利用性，改善運作效率，並取得更低的營運成本。而在這其中，數位影像監控系統便是相當熱門的議題。
本研究採用德州儀器公司DaVinci系列之TMS320DM6437數位訊號處理器作為運算核心，以其高效能、低功率的優勢進行開發。再以德州儀器公司所提供的H.264影像編碼範例程式作為系統架構，加入移動估測（Motion Estimation）、權重遮罩（Weighted Mask）以及時間戳記（Timestamp）的功能。而研究最終，將能夠更加準確的感應到畫面中明亮度變化，並經由偵測的結果來決定H.264影像編碼與否，進而減少CPU負載、儲存空間的消耗。還能利用時間戳記的方式，來增加追蹤事件的便利性。

In recent years, due to the vigorous development of information and communication theories, as well as a wide range of applications on digital devices, people desire to enhance the capability and efficiency, and achieve lower operating costs of systems by using digital information. Thus, among digital device applications, digital video surveillance systems have nowadays become a popular topic.
In this study, we used Texas Instruments DaVinci series TMS320DM6437 digital signal processor as a computing core, with its high performance, low power consumption advantages for development. The motion estimation, weighted mask and timestamp functions will be added in the H.264 video encoding system architecture provided by Texas Instruments Company to increase versatility. The surveillance system eventually will be able to more accurately detect luminance difference of interested area in the video, using the detected result as a criterion for H.264 video encoding, thereby reducing CPU load and the expenditure of storage space. In addition, the usage of the timestamp method will increase the convenience of event tracking.

誌謝......................................................................................................................... i
摘要........................................................................................................................ ii
Abstract .................................................................................................................iii
目錄....................................................................................................................... iv
圖目錄................................................................................................................... vi
表目錄.................................................................................................................. vii
第一章緒論.......................................................................................................... 1
1.1研究動機與背景...................................................................................... 1
1.2研究目的.................................................................................................. 3
1.3章節說明.................................................................................................. 4
第二章背景知識.................................................................................................. 5
2.1數位訊號處理器...................................................................................... 5
2.2數位影像監控技術.................................................................................. 7
2.3數位影像壓縮技術.................................................................................. 8
第三章研究方法.................................................................................................. 9
3.1系統架構.................................................................................................. 9
3.2硬體開發平台........................................................................................ 12
3.3軟體開發平台........................................................................................ 16
3.4伺服器服務端實驗架構........................................................................ 21
3.5使用者控制端實驗架構........................................................................ 28
3.6移動估測................................................................................................ 34
3.7權重遮罩................................................................................................ 37
第四章實驗結果與分析.................................................................................... 41
4.1伺服器服務端........................................................................................ 42
4.2使用者控制端........................................................................................ 46
4.3效能分析與探討.................................................................................... 52
第五章結論........................................................................................................ 56
參考文獻.............................................................................................................. 57
附錄A 原始碼app_block_video_input.c .......................................................... 59
附錄B 原始碼app_block_video_output.c ........................................................ 63
附錄C 原始碼app_block_video_encode.c ....................................................... 66
附錄D 原始碼app_block_file_output.c............................................................ 69
附錄E 原始碼app_global.h............................................................................... 71
附錄F 原始碼app_main.c ................................................................................. 76
附錄G 原始碼app_rpcs.c.................................................................................. 79
附錄H 原始碼Main.js函式layoutWidgets ..................................................... 82
附錄I 原始碼Main.js函式eventFxnBtnPlay .................................................. 85

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