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研究生: 簡裕峰
論文名稱: 高效率二維整數式離散小波轉換晶片之排列架構設計與分析
An Efficient VLSI Architecture Line-Based 2-D Integer DWT :Design and Analysis
指導教授: 周懷樸
口試委員:
學位類別: 碩士
Master
系所名稱: 原子科學院 - 工程與系統科學系
Department of Engineering and System Science
論文出版年: 2005
畢業學年度: 93
語文別: 中文
論文頁數: 73
中文關鍵詞: 二維離散小波轉換整數式小波轉換小波轉換架構管線化架構影像壓縮標準多維解析
外文關鍵詞: 2D-DWT, integer transform, lifting scheme, line-based, JPEG2000, multi-resolution
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  • 本篇論文主要研究目的是設計一個針對二維離散小波轉換晶片,離散小波轉換具有多重解析,可把訊號的頻帶做有效的分離很適合用來做影像的壓縮轉換,本片利用提升式演算法(Lifting Scheme)及整數式小波轉換(integer to integer mapping)來實現運算單元,lifting scheme主要可用來簡化運算過程,而整數式則是可以達到完全反向轉換,降低在設計晶片時有效位數取捨所造成的誤差,在架構上我們使用line based的排程方式可以有效的降低暫存器組的數目及提高硬體的使用效率,而位址產生器我們使用in-place mapping的方式可以更容易的去實現。
    除了上述我們使用到的演算法及架構外,為了加快晶片的處理速度,我們修改小波函數中的係數,把原來的乘法器用移位器來取代以提昇晶片的效能。
    我們利用硬體描述語言(Verilog Hardware Description Language)來設計此架構,在用台積電所提供的.35製程library及Synopsys所提供的合成軟體去做合成電路,本篇論文測試結果二維離散小波轉換的電路面積為3130μm*3125μm,而時脈最高可以達到285MHz


    第一章 序論..............................................1 1-1 前言........................................................1 1-2 研究動機及目的..............................................4 第二章 文獻回顧..........................................7 2-1 二維離散小波(DWT)轉換演算法.................................7 2-1.1 傳統演算法(Convolution)................................7 2-1.2 提升式演算法(Lifting Scheme)..........................10 2-2 整數式二維離散小波轉換(Integer DWT)........................13 2-3 二維離散小波轉換架構比較...................................17 2-3.1 直接架構(Direct Approach).............................19 2-3.2 一階二維架構(One level For Two Dimension)...............21 2-3.3 多階二維架構(Multi-level For Two Dimension)............23 第三章 二維離散小波轉換晶片設計........................26 3-1 運算單元的設計............................................26 3-2 二維離散小波轉換設計......................................31 3-2.1 邊界值延伸(Bounding Extension).......................31 3-2.2 管線化架構(Pipelining)...............................33 3-3 列方向(Row Module)離散小波轉換設計........................35 3-4 行方向(Column Module)離散小波轉換設計.....................38 3-4.1 暫存器架構(Line-based)...........................38 3-4.2 位址產生器(Adder Generator)..........................44 3-5 二維反向離散小波(IDWT)轉換設計............................48 第四章 小波轉換實現的模擬分析...........................50 4-1 數學模式驗證................................................50 4-2 設計模擬驗證................................................55 4-3 硬體合成分析................................................58 第五章 結論與建議........................................61 參考文獻.................................................63

    [1] I.Daubechies and W.Sweldens,“Factoring wavelet transforms into lifting steps,” Journal of Fourier Analysis and Applications , Vol. 4, pp. 247-269, 1996.
    [2] JPEG2000 Verification Model 6.0.
    [3] A. R. Calderbank, I. Daubechies, W. Sweldens and B. Yeo, ”Wavelet transforms that map integers to integers,” Applied and Computational Harmonic Analysis., Vol.5, no. 3, pp. 332-369, 1998.
    [4] Wen-Ta Lee, Wen-Sheng Chiang and Chia-Chun Tsai, “Efficient VLSI Architectures with low hardware cost for discrete wavelet transform,”Institute of Computer, Communication and Control National Taipei University of Technology, 2002.
    [5] N. D. Zervas, G. P. Anagnostopoulos, V. Spiliotopoulos, Y. Andreopoulos, and C.E. Goutis, “Evaluation of design alternatives for the 2-D discrete wavelet transform,” IEEE Transactions on Circuits and Systems for Video Technology, vol.11, no.12, December 2001.
    [6] M. Vishwanath, R. M. Owens, and M. J. Irwin, “VLSI architectures for the discrete wavelet transform,” IEEE Trans. Circuits Syst.-11, vol. 42, NO. 5, pp. 305-316,MAY 1995.
    [7] P. C. Wu and L. G. Chen, “An efficient architecture for two-dimensional discrete wavelet transform,” IEEE Trans. On Circuits and Systems for Video Technology, vol.11, no.4, Apr.2001
    [8] C. Chakrabarti and M. Vishwanth, “Efficient Realizations of the Discrete and Continuous Wavelet Transforms : From Single Chip Implementations to Mappings on SIMD Array Computers,” IEEE Trans. Signal Processing, vol. 43, pp. 759-771, Mar 1995.
    [9] Z. Guangjun, C. Lizhi and C. Huowang, “A simple 9/7-tap wavelet filter based on lifting scheme,” IEEE Trans. pp. 249-252, 1995.
    [10] Sao-Jie Chen and Tao-Wen Chung, “Design and implementation of 2-D discrete wavelet transform VLSI architecture for JPEG2000,” NTU EE thesis, chap.3, 2001
    [11] K. Andra, C. Chakrabarti and T. Acharya, “A VLSI architecture for lifting-based forward and inverse wavelet transform,” IEEE Trasactions on signal processing, vol. 50, no. 4, april 2002.
    [12] K. Parhi, “VLSI digital signal processing system,” Wiley InterScience, chap.2, 1999.
    [13] C.-T. Huang, P.-C. Tseng, and L.-G. Chen, “Efficient VLSI architectures of lifting-based discrete wavelet transform by systematic design method,” in Proceedings of 2002 IEEE International Symposium on Circuits and Systems (ISCAS 2002), Scottsdale, Arizona, May 2002.

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