隨著高齡化社會的到來，居家安全越來越受重視，在一般的看護中，以定點式錄影監控居多，當需要照顧的人發生意外時不能即時通知監護人員，造成人員損傷，因此本論文以開發獨立式老人居家安全即時監控式系統為目的，希望能夠減少人員的傷亡。數位訊號處理器(DSP：Digital Signal Processor)具有高效能、體積小以及適合獨立運作的優點，因此本系統將以德州儀器(Texas Instrument)之TMS320DM642 DSP模組為開發平台，並搭配具有旋轉以及變焦功能之PTZ(Pan/Tilt/Zoom)攝影機來實現，透過旋轉與縮放PTZ攝影機使人物位於畫面中。首先將擷取進來之影像透過背景影像相減法萃取出目標物影像，再由目標物二值化影像建立姿態骨架，再利用該骨架使用向量量化法進行姿態分析，接著系統可由目標物二值化影像得到之位置以及大小對PTZ攝影機下達相關指令，最後再透過網路將影像傳送至遠端電腦觀看，如此便能達到居家安全監控。

With the coming of advanced age society, the home cafety care becomes more and more important. In home cafety care, fixed video recording is the most wildly used, when people need to be take care were in accident, the guardianship personnel can not be informed immediately leads to injury of the people, the purpose of this thesis is to implement an real-time home cafety care for elderly using stand-alone surveillance system to reduces the personnel casualty. The Digital Signal Processor (DSP) has many benefits such as high performance, small size and standalone, for this reason, we use the TI’s TMS320DM642 DSP module as our research developing platform, and the camera which has the pan, tilt and zoom functions named PTZ camera, we can use the pan, tilt and the zoom function to make the target stay in the frame. At first, we use the background subtraction to extract the target image from input image. Secondly, estimate the posture skeleton from the binary image of the target, and than use the vector quantization to analysis the target’s posture. Thirdly, send the appropriate commands to PTZ camera according to the target’s position and size information. Finally, we can transmit the image to the remote computer, hereby develop a real-time home safety care surveillance system.

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