標題: | 以光學位移微擾調制方法強化系統之影像解析度 Resolution Increase of Image Detecting System by Optical Position Perturbation Modulation Method |
作者: | 石宇森 Yu-Sen Shih 呂宗熙 Tzong-Shi Liu 工學院精密與自動化工程學程 |
關鍵字: | 光楔;解析度;位移;畫素;電荷耦合器;影像處理;稜鏡掃描器;微擾;wedge;resolution;shift;pixel;CCD;image processing;prism scanner;perturbation |
公開日期: | 2002 |
摘要: | 本研究以發展低成本的方法,旨在強化影像系統的解析度,此法係旋轉一對光學楔形透鏡來改變光學成像路徑,使物體的成像位置產生極微小的位移變化,而此極微小的位移變化相當於將影像感測器的畫素切割變小,畫素數目增加,影像解析度便提昇。將一對光學楔形透鏡置於低解析度電荷耦合器照相機之鏡頭前,由照相機擷取數張不同成像位置的影像,再將這些影像加以處理,便可得到新的優質影像,使系統的影像解析度提昇至1280 x 960畫素。 The purpose of this study is to develop a method for increasing the resolution of an image system with low cost. This method can generate a very slight shift of image, the optical path is varied by rotation of a pair of optical wedges. The very slight shift is equivalent to reducing pixel size. The more pixels there are, the higher the resolution is. This study installs a pair of optical wedges in front of a low resolution CCD camera lens. Several images of different imaging positions are taken. Digital image processing yields a high quality image. The resolution of this system can achieve 1280 x 960 pixels. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT911146005 http://hdl.handle.net/11536/71235 |
顯示於類別: | 畢業論文 |