本論文提出一個以Android為開發平台搭配上自動繪圖機的最佳化路徑演算法，實現一個即拍即傳的繪圖概念。主要以Android為開發語言，並配合OpenCV。主要提供三種圖片獲取方式：相機、內建圖片、從檔案選擇，將取得的圖片作適當的區域選擇，更改圖片大小使之符合繪圖機之範圍，緊接著去除雜訊，再經過邊緣偵測、細線化等處理，最後透過座標運算，得出相鄰的座標點，取出線段座標，並存成文字檔，透過wifi連接自動繪圖機，並使用php控制自動繪圖機的檔案更新與繪圖動作。
自動繪圖機由Raspberry pi與馬達所構成，透過Raspberry pi來操作馬達，以達到X、Y軸移動，達成繪圖之目的。

In recent years, smart phones are widely used in the world. There are three basic systems used in smart phones, which are Android, iOS, and Windows. Among them, Android system market share is the highest. It applies the open source for all users to access the system source code, so it is widely used in a variety of embedded consumer electronic products, which include wearable devices, smart phones, and smart appliance operating systems.
This paper aims to introduce the path optimization algorithm for automatic plotter based on Android development platform, to accomplish the purpose of taking pictures and transmitting data instantly. There are three sources of images: cameras, sample images and files. Users can set the image range, and obtain the coordinate information of images through the complicated image processing.
Finally, the coordinate information are sent to the plotter, and then the plotter will print the image. The automatic plotter consists of the Raspberry pi and two motors. The Raspberry pi processes the accessed data and controls the plotter to complete the picture.

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