主動式快速物體外型重建技術研究

A Study of Active speedy shape reconstruction system

王信雄(Hsin-Hsiung Wang)

指導教授 ： 黃健生

中原大學/工學院/機械工程研究所/碩士(2001年)

https://doi.org/10.6840/cycu200100405

摘要

摘 要

本文主要目的在建立一套簡單、快速的主動式深度量測系統，重建物體表面資料，以利應用於逆向工程的前置作業。本系統由兩台CCD攝影機、一線雷射光束與一台個人電腦所構成，採用雷射光束(laser beam)為光源的主動式立體幾何法(active stereopsis)來量測物體的外形。

吾人利用兩台CCD攝影機擷取量測點的資料，經過三角幾何量測法計算出物體深度，並與實際深度作比較，同時也量測出物體三維座標，然後重建量測物體表面。

然後吾人利用此設計並校正過的深度量測系統量測階梯形木塊，可得到誤差約3.6%的結果。對於實際物體，選擇量測具有凹凸表面的滑鼠和寶麗龍碗，並比較其結果。

關鍵字

重建 ； 深度量測 ； 主動式

並列摘要

Abstract

This paper proposes a simple and fast active depth measure system that can be used in reversing engineering. The system comprises two CCD cameras and one laser beam as active stereopsis to measure the surface of object.

We use two CCD camera to get the stereo image pair, then calibrate the images, obtain the feature points by thresholding, and match the stereo points by averaging the gray level each row. Finally we calculate the depth by triangulation equation. Then the results of calculated depth are compared with measure results of the real depth. At the same time, we can get the shape of object.

The step object has been tested as synthetic image, and we got a good result. Meanwhile, we use polystyrene bowl and mouse as real images, we obtain good depth map by using this developing system.

並列關鍵字

depth measurement ； active ； reconstruction

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