[[alternative]]Research on the Image Sensing System

碩士機電工程學系[[abstract]]本論文利用影像技術來發展測距系統，並詳細分析與研究。本論文的影像測距系統整合了影像處理及半導體雷射兩種技術，來進行測距的技術。它是一種非接觸式的光電檢測技術，利用半導體的雷射光，以及影像感測器等現代光電元件為基礎，透過被檢測的物體所反射回來的光點來進行檢測。也就是半導體雷射所產生光點透過影像擷取處理的方式來分析雷射光點與影像中心值的距離，經過進一步計算後。最後取得點畫素距離及實際距離的關係，最後再依畫素及距離的關係，將所量測的光點與影像中心距離經計算後，成為距離顯示出來。 本研究主要以影像感測器做為影像取得的光偵測器，並利用Labview這一套軟體來做影像的擷取、分析及計算等處理，而成為一個完整的光電距離感測系統。而研究過程中利用不同波長的半導體雷射及不同的影像解析度所取得的影像做準確度的分析來進行探討，並分析可能造成的本研究的測距系統失誤的外在因素及探討在不同波長的雷射光電元件與不同的影像解析度下，那一個最能達到理想的測距準確度，成為標準的測距模式。本論文成功地運用影像感測器，達成測量距離的應用，並發展出一套，背景干擾低及高靈敏度的影像測距技術。[[abstract]]In recent years, the components to construct computer vision systems have also become affordable and widely available. This thesis mainly focuses on the image sensor for a research of range finder system. We integrated the image processing and laser targeting two technologies for this distance measurement system. It is a kind of non-contact measurement to evaluate the distance. We used an Image sensor to detect a Laser point then a Labview program is used to get photo, analyze and calculate the image data. The applications of triangulation are under proper mathematical manipulation to derive a distance and image sensor photo relationship. We can find an analytic formula that we can transform the image sensor data to a correct distance. For this image sensor range finder system, factors which will cause mistakes and errors are checked and analyzed. In this research, we tried to change different wavelengths of Laser and different pixel of Image sensors. At the same time, we also used different material of target, different illumination of intensity and minimum size of target to look for any factor that will affect this image sensor range finder system. The proposed image distance system is under test and analyzed which has been proven to be practical and efficient