臺灣博碩士論文加值系統

近年來，科技的進步使得機電系統結合光學技術之3D資訊的擷取能夠更進一步的發展。為了改進先前結構光學技術使用簡單的單色樣型及無法適時調整解析度之缺點以及光線掃描時機械動作之震動影響量測精確性之缺點，本文使用彩色單槍投影機結合三角量測法來量測目標區域之物體，根據物體表面的色彩與複雜度，在不引入機械動作之情況下，調整投射彩色結構光線樣型與解析度，藉由設定深度變異數臨界值之疊代步驟更換投射樣型色彩與解析度，形成一封閉迴路之3D物體量測系統，以便取得更適於表示3D物體幾何資訊之資料。在本研究中，首先，取得相機焦距f參數並評估三角量測法各參數對於計算物體3D座標的影響性，建立樣型像素角度對照表，並使用內插法以擴展對照表角度之使用範圍。在實驗範例中，使用校色板與魔術方塊說明彩色物體對於檢測相機成像辨識度之影響，並由檢測相機取得的成像畫面判讀投影點之像素位置，結合三角量測法即可計算出投影點3D座標，配合電動轉盤使物體旋轉以建立量測物體3D模型，其中改變投射色彩與解析度使得在獲取物體表面資訊時更加明確與細緻，以達到快速獲取高解析度之精確3D表面資訊之目的。

In recent years, the progress in integrated technology has caused the improvement of 3D data acquisition system using the optical, mechanical and electrical components. In order to further improve the previous structured light technology using simple patterns and limited resolution as well as to avoid the vibration problem caused by the mechanical action during the measuring process, a computer controlled color projector is used to measure the region of interest of the 3D objects in this research. Based on the colors and complexity of the object surface, the color and resolution of the projected structured light patterns are adaptively adjusted without the introduction of mechanical action. A threshold value for depth variance is set in the iteration steps to change the color and resolution of the projected patterns, and form a closed loop 3D objects measurement system. First of all, we obtain camera focal length f parameter and assess parameter influence in the triangular measure method for calculating the coordinates of 3D objects, establish the angle-pixel table, and then use interpolation method to expand the effective range of the table. In the experimental examples, we use the color checker and magic box to show the ambiguous situations of colors existing in the camera images, and determine the position of pixels in the projected image. The coordinates of 3D objects can be calculated from projected images by using triangular measure method. The complete 360˚ depth data of 3D objects can be obtained using a turn table, in which the color and resolution of surface information of the object become more and more clearly and finely, so as to achieve the precise high-resolution 3D surface information of objects.

摘要
ABSTRACT
目錄
圖目錄
表目錄
第一章 緒論
1.1 前言
1.2 研究目的
1.3 研究方法
1.4 論文架構
第二章 結構光學與三角量測法
2.1 結構光學
2.2 三角量測法
2.2.1 2D三角量測法
2.2.2 3D三角量測法
第三章 系統建立與調整
3.1 系統建構與建立
3.2 焦距f量測
3.3 各參數影響性
3.4 角度α值量測
第四章 色彩辨識與解析度調整
4.1 校色板色彩辨識
4.2 魔術方塊色彩辨識
4.3 解析度調整
4.4 座標資訊應用
第五章 實驗結果與討論
5.1 深度距離實驗
5.2 建立3D模型
5.3 結論與未來研究方向
參考文獻

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