2013-08-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/686110摘要：本計劃研究的內容包括(1)數位相機之自動對焦的開發，(2) 數位攝影機之自動對焦的開發，(3)變焦追蹤的研究，(4)影像及影片去模糊系統的開發。目前數位相機及數位攝影機在日常生活中已非常普及。能否立刻補捉到清晰的影像及影片，主要決定於自動對焦系統的速度及性能。而其中之關鍵，我們認為就是對焦曲線之數學模型建立，這也是本研究計劃的重點。有了良好的數學模型，不論鏡頭是在離焦區或者在合焦區，都可以根據片斷的對焦值資料預測此瞬間的合焦位置，達成快速對焦之目的，並減少經驗性參數的使用。此外，針對攝影機，我們也將開發一套選擇對焦值之方法，使得攝影機之自動對焦可適用於各種景物。我們也將研發一套後處理的系統，解決自動對焦過程中偶爾產生的輕微離焦模糊現象。<br> Abstract: Digital cameras and camcorders are popular electronic devices that help us freeze the exciting or historic moment of our daily life in the form image and video. The speed and performance of the autofocus system of a digital camera or camcorder often determine whether a sharp image/video can be captured instantly. We believe the key to autofocus is on mathematical modeling of the focus profile. This is the main task of this proposal. A good model allows us to predict the in-focus lens position from partial focus data samples and hence achieve speedup. In addition, we plan to develop a method for reliable selection of focus data samples. It would enable us to capture sharp video sequences for any scene. We also plan to develop a post-processing algorithm to fix the occasional out-of-focus image/video frames resulted from the autofocus process. The proposed research includes 1) autofocus for digital still camera, 2) autofocus for digital camcorder, 3) zoom tracking, and 4) image/video deblur.自動對焦變焦追蹤除模糊數位相機Autofocuscontinuous autofocusdeblurdigital camera