| dc.contributor.advisor | 廖文宏 | zh_TW |
| dc.contributor.advisor | Liao,Wen-Hung | en_US |
| dc.contributor.author (Authors) | 許富量 | zh_TW |
| dc.contributor.author (Authors) | Hsu,Fu-Liang | en_US |
| dc.creator (作者) | 許富量 | zh_TW |
| dc.creator (作者) | Hsu,Fu-Liang | en_US |
| dc.date (日期) | 2004 | en_US |
| dc.date.accessioned | 17-Sep-2009 14:09:04 (UTC+8) | - |
| dc.date.available | 17-Sep-2009 14:09:04 (UTC+8) | - |
| dc.date.issued (上傳時間) | 17-Sep-2009 14:09:04 (UTC+8) | - |
| dc.identifier (Other Identifiers) | G0927530341 | en_US |
| dc.identifier.uri (URI) | https://nccur.lib.nccu.edu.tw/handle/140.119/32729 | - |
| dc.description (描述) | 碩士 | zh_TW |
| dc.description (描述) | 國立政治大學 | zh_TW |
| dc.description (描述) | 資訊科學學系 | zh_TW |
| dc.description (描述) | 92753034 | zh_TW |
| dc.description (描述) | 93 | zh_TW |
| dc.description.abstract (摘要) | NPR(Non-photorealistic Rendering)主要目的是透過不同的演算法，由電腦自動產生各種不同繪畫風格的影像，目前的NPR系統礙於演算法的計算速度，多數都僅針對靜止的單一圖片進行處理，故本研究試圖對二維空間中已發展的NPR演算法做延伸，在空間領域以及MPEG壓縮領域上分別提出不同的加速效能方式。在空間方面針對不同的範圍套用NPR演算法，如臉部、膚色區塊等有意義的部份；而在MPEG壓縮格式上，透過MPEG中的I,P,B-frame不同的特性，視影像中的差異度做不同的套用方式，以求改進NPR演算法效能，達到即時產生NPR特效的影片或動畫，進一步應用於多媒體娛樂以及人機互動機制。 | zh_TW |
| dc.description.abstract (摘要) | Recently, various non-photorealistic rendering (NPR) techniques have been developed for computers to generate images of different artistic styles automatically. Due to the complexity of the algorithms, however, most NPR methods are limited to the processing of static images. It is the objective of this thesis to extend and improve existing NPR techniques to enable near real-time processing of video.The enhancement can be achieved in both spatial and compressed domains. In the spatial domain, computational complexity is reduced by applying NPR only to selective regions in the images, e.g., face or skin area. In the MPEG compressed domain, by exploiting the relationship among I, P, and B frames, different strategies can be developed to increase the efficiency of the NPR algorithm. Experimental results have demonstrated the efficacy of the proposed methods and validated the near real-time creation of NPR video effects. | en_US |
| dc.description.tableofcontents | 第一章 緒論1.1 研究動機1.2 NPR（Non-photorealistic Rendering）簡介1.3 研究目標1.4 研究架構1.5 論文章節架構第二章 相關研究2.1 NPR研究議題2.2 NPR效果 2.2.1模擬水彩畫NPR 2.2.2分層處理(Multi-layer,Hierarchical,Coarse-to-fine Processing) 2.2.3 分割處理(segmentation)2.3 NPR動畫 2.3.1二維NPR動畫 2.3.2局部區塊NPR2.4 Real-time NPR動畫第三章 加速空間領域上的NPR演算法3.1 整張影像(Full frame)3.2 部分影像 3.2.1邊緣影像 3.2.2 移動區塊 3.2.3 背景 3.2.4 隨機存取3.3 偵測區塊 3.3.1 臉部區塊 3.3.2 膚色區塊3.4 統計與分析第四章 加速壓縮領域上的NPR演算法4.1 MPEG壓縮原理4.2 在壓縮領域套用NPR演算法方式4.3 於DCT domain的特效 4.3.1改變DC係數 4.3.2 AC Frequency Filter4.4將I,P,B-frame轉回空間域套用NPR演算法 4.4.1 I-frame套用NPR演算法 4.4.2對P,B-frame 套上NPR演算法4.5統計分析第五章 結論與未來方向5.1結論5.2 未來方向參考文獻 | zh_TW |
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| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en_US | - |
| dc.source.uri (資料來源) | http://thesis.lib.nccu.edu.tw/record/#G0927530341 | en_US |
| dc.subject (關鍵詞) | 非真實照片繪圖 | zh_TW |
| dc.subject (關鍵詞) | 非真實照片繪圖動畫 | zh_TW |
| dc.subject (關鍵詞) | 即時特效 | zh_TW |
| dc.subject (關鍵詞) | 壓縮空間NPR動畫 | zh_TW |
| dc.subject (關鍵詞) | NPR | en_US |
| dc.subject (關鍵詞) | Real-time NPR | en_US |
| dc.subject (關鍵詞) | NPR in the compressed domain | en_US |
| dc.title (題名) | 壓縮空間上非擬真視訊之製作 | zh_TW |
| dc.type (資料類型) | thesis | en |
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