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標題: 偏微分方程與自適區塊截斷編碼結合用於影像去雜訊與壓縮
Mixed PDE Based Methods with Adaptive Block Truncation Coding for Image De-noising and Compression
作者: 焦郁華
Chiao, Yu-Hua
關鍵字: block truncation coding method
image compression
upwind finite difference method
convection diffusion equation
image de-noise
出版社: 應用數學系所
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摘要: 在這篇論文中,我們提出了一種新的自適應區塊截斷編碼方法(ABTC)的影像壓縮方法。為了達到更好的影像成像品質,我們提出了一種結合了迎風有限差分法求解對時間依賴的擴散對流方程式和自適應區塊截斷編碼方法來去除影像雜訊。實驗數據結果表示,我們的方法有效地去除影像雜訊,並保留影像邊緣以及對影像壓縮的過程。
In this thesis, we propose an adaptive block truncation coding method (ABTC) for image compression. For achieving a better image quality, we propose a novel algorithm by a mixture of a upwind finite difference for solving a time dependent convection diffusion equation and the ABTC algorithm to remove the image noise. The numerical results show that our proposed methods are effectively remove the noise, and preserves the edge information well during the image compression process.
其他識別: U0005-0407201111232600
Appears in Collections:應用數學系所



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