臺灣博碩士論文加值系統

在傳統的影像放大技術中，普遍存在的最大問題就是影像放大後，會使得影像中物體的邊緣有鋸齒狀，而且還會有影像模糊的問題存在。這兩個主要的問題必須予以解決，才能使放大後的影像，仍保有一定的品質。而本論文的提出，主要的就是希望在放大影像的同時，還能保持影像的清晰度與對比度。因此在本篇論文中，將會利用一種多階段的變形雙線性影像放大方法來解決上述因放大時所產生的鋸齒狀與模糊不清的問題。

This paper proposed a multi-stages modified bilinear method for enhancing image resolutions. In tradition of enhancing image resolutions techniques, there will invariably exist two serious problems presented in the final magnification result. One problem is the edge will has jaggy after magnifying image, and the other problem is the image will blur after magnifying image. To resolve those problems and make the image has a good quality after magnifying image; we proposed a multi-stages modified bilinear method for enhancing image resolutions. The experimental results show the proposed method has excellent performance in subjective visual sense and quantitative measurement.

第一章、前言1
1.1 背景1
1.2 動機與目的2
1.3 相關研究3
1.4 論文架構9
第二章、傳統的內插方法與系統流程10
2.1 前言10
2.2 內插的方法10
2.2.1 最近鄰居內插法(Nearest-neighborhood interpolation) 11
2.2.2 雙線性內插法(Bilinear interpolation)12
2.2.3 雙立方內插法(Bicubic interpolation)14
2.3 系統流程16
第三章、詳細的影像放大方法18
3.1 前言18
3.2 彩色系統的轉換(Color system translation)18
3.3 影像的幾何轉換(Geometric translation)19
3.4 多階段的變形雙線性內插法20
第四章、實驗結果與討論26
4.1 前言26
4.2 實驗設備26
4.3 客觀的評估方法26
4.4 主觀的視覺評估33
第五章、結論與未來工作50
參考文獻51

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