臺灣大學: 電機工程學研究所陳永耀賀世傑Ho, Shih-ChiehShih-ChiehHo2013-03-272018-07-062013-03-272018-07-062010http://ntur.lib.ntu.edu.tw//handle/246246/254028數位相機已經在世界各地非常普及。 不論用何種照相機在照相或是錄影，大家有可能在光線充足的環境下照出過度飽和的照片。有時在重新照時可避免對準高反射或高發光物體，例如鏡子、燈泡或太陽。不然我們可將鏡頭的光圈調小一些以減少曝光量。然而已經錯過重要拍攝時機並可能無法再重拍。 本論文提出一個創新的光學系統概念可應用於減少飽和光線。新的光學系統是將數位光學反射鏡裝置（DMD）與電荷耦合元件( CCD )影像感測器兩者一併設計在一個閉迴路系統。 數位光學反射鏡裝置將整個成像畫面從鏡頭反射到電耦荷影像感測器，控制器會識別出過度飽和的畫素並以 x,y 座標標示。然後將所對應的數位光學反射鏡飽和畫素傾斜成非反射狀態。意思是說，此飽和畫素會被驅動成傾斜到非反射狀且不再會反射亮的影像到電荷耦合元件感測器。所以從下一張圖像原飽和的影像則不會再反射到電荷耦合元件感測器。 它是一張非飽和照片大家想要儲存在記憶卡。 此創新光學設計之優點，在於讓使用者獲得銳利照片時不必擔心對準高發光物體所產生過渡曝光情形。Digital Camera has become extremely worldwide. No matter what kind of camera been used for photographing or video recording, people may get saturated pictures in bright environment. Sometimes, it is possible to take another picture and try to avoid aiming to a high reflective or luminance object such as mirrors, lamps or Sun. Or we can turn down the camera lens’s aperture a little bit to reduce the exposure. However, the previous moment may be loss already or not retrievable. A new camera optical system control concept for saturation reduction is proposed in this thesis. This new camera optical system are assembled from Digital Mirror Device(DMD) and Charge Coupled Device(CCD) to be a closed-loop feedback system. DMD component is used to reflect the whole image from lens to CCD sensor, then a controller will identify the image content saturated pixels data in x,y coordinate. Then the corresponding saturated pixels DMD mirrors are driven to off-state. It means that the saturated pixels will be tilted to a bypass state and will not reflect those bright images to CCD sensor anymore. So, the original saturated image will not be reflected to CCD from the next picture. It is a non-saturation picture data that we would like to store into flash memory. The advantage of this new optical design allows user to take a sharp picture without the concern of getting a saturated picture when aim to a high intensity object.5153388 bytesapplication/pdfen-US微機電電荷耦合元件數位光學反射鏡裝置MEMSCCDDMDthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/254028/1/ntu-99-P94921002-1.pdf