Description: Wavelets have widely been used in many signal and image processing applications. In this paper, a new
serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet
transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline
architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is
done using a tree of carry save adders to ensure the high speed processing required for many applications.
The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis
reveals that the proposed architecture, implemented using current VLSI technologies, can process a
video stream in real time.-Wavelets have been widely used in many sign al and image processing applications. In this p aper. a new serial-parallel architecture for wavele t-based image compression is introduced. It is based on a 4-tap wavelet transform. which is realized using some FIFO memory module 's implementing a pixel-level pipeline archite cture to compress and decompress images. The're al filter calculation over 4 blocks window is done using a tree of carry save adders to ensure t he high speed processing required for many appl ications. The details of implementing both com pressor decompressor and sub-systems are give n. The primarily analysis reveals that the prop osed architecture, VLSI implemented using current technologies, can process a video stream in real time. Platform: |
Size: 2837459 |
Author:sdfafaf |
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Description: 用于图象处理的小波变换并行算法,本文在二进小波变换及Mallat快速算法原理的基础上，分析了小波变换的
可并行成分，研究了小波变换的并行算法.算法分析表明，并行小波变换可以有效
地提高运行速度，其并行处理效率也接近理想状态.-image processing for the wavelet transform parallel algorithm, In this paper, two Progressive Mallat wavelet transform and fast algorithm on the basis of principle, Analysis of the wavelet transform the parallel components of wavelet transform the parallel algorithm. algorithm analysis showed that Parallel wavelet transform effectively increase the operating speed and its parallel processing efficiency is close to the ideal state. Platform: |
Size: 24306 |
Author:bmb |
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Description: Wavelets have widely been used in many signal and image processing applications. In this paper, a new
serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet
transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline
architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is
done using a tree of carry save adders to ensure the high speed processing required for many applications.
The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis
reveals that the proposed architecture, implemented using current VLSI technologies, can process a
video stream in real time.-Wavelets have been widely used in many sign al and image processing applications. In this p aper. a new serial-parallel architecture for wavele t-based image compression is introduced. It is based on a 4-tap wavelet transform. which is realized using some FIFO memory module 's implementing a pixel-level pipeline archite cture to compress and decompress images. The're al filter calculation over 4 blocks window is done using a tree of carry save adders to ensure t he high speed processing required for many appl ications. The details of implementing both com pressor decompressor and sub-systems are give n. The primarily analysis reveals that the prop osed architecture, VLSI implemented using current technologies, can process a video stream in real time. Platform: |
Size: 2837504 |
Author:sdfafaf |
Hits:
Description: 用于图象处理的小波变换并行算法,本文在二进小波变换及Mallat快速算法原理的基础上，分析了小波变换的
可并行成分，研究了小波变换的并行算法.算法分析表明，并行小波变换可以有效
地提高运行速度，其并行处理效率也接近理想状态.-image processing for the wavelet transform parallel algorithm, In this paper, two Progressive Mallat wavelet transform and fast algorithm on the basis of principle, Analysis of the wavelet transform the parallel components of wavelet transform the parallel algorithm. algorithm analysis showed that Parallel wavelet transform effectively increase the operating speed and its parallel processing efficiency is close to the ideal state. Platform: |
Size: 23552 |
Author:bmb |
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Description: 第二代小波有如下特点：（1）所有运算可作本位操作，节省内存；（2）利用复合复制，减少了浮点运算量；（3）一个上升步骤中的所有操作是并行的，而多个上升步骤之间是串行的；（4）逆变换只须简单地改变代码执行的先后顺序，具有与正向变换相同的计算复杂性；（5）由于变换过程中不必依赖Fourier分析，很容易推广到一般性应用领域；（6）易于构造非线性小波变换（如整数变换）。 -Second-generation wavelet has the following characteristics: (1) all computing can be used for standard operation, saving memory (2) the use of composite reproduction, reducing the amount of floating-point operations (3) a rise in steps of all operations in parallel, and increased number of steps between the serial (4) inverse transform simple to change the sequence of code execution, with the same forward transform computational complexity (5) as a result of having to rely on the transformation process of Fourier analysis, easily extended to general applications (6) easy to construct non-linear wavelet transform (such as Integer Transform). Platform: |
Size: 1024 |
Author:石头 |
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Description: 本文提出了一种基于提升算法的高效JPEG2000二维离散小波变换(2D—DWT)~ 结构，将边界延拓内嵌于离散小波变换过程中，减少了所需的内存空间和功耗。采用W 扫描输入方式和行列并行处理结构，加快了变换速度，大大提高了小波变换的效率。整个二维离散小波变换结构已经通过FPGA硬件仿真验证。-This paper presents a highly efficient algorithm based on lifting JPEG2000 two-dimensional discrete wavelet transform (2D-DWT) ~ structure, the boundary extension will be embedded in the process of discrete wavelet transform to reduce the required memory space and power consumption. W scanning input methods used and the ranks of parallel processing structure, and accelerated the pace of change has greatly enhanced the efficiency of wavelet transform. The whole structure of two-dimensional discrete wavelet transform has been adopted FPGA hardware simulation. Platform: |
Size: 182272 |
Author:H Simon |
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Description: 一篇讲述二代小波变换并行计算的论文，我觉得非常有用，对提升变换小波感兴趣的同学可以-About a second generation wavelet transform parallel computing papers, I find it very useful for students interested in enhancing wavelet transform can see Platform: |
Size: 90112 |
Author:jiangjinshou |
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Description: ，主要包括并行程
序设计基础（并行计算机系统与结构模型、ＰＣ机群搭建和并行程序设计简介等）、并行程序
编程指南（ＭＰＩ、ＰＶＭ、ＨＰＦ和ＯｐｅｎＭＰ等）和并行程序开发方法（可视化并行程序设计环境、
并行程序调试和并行程序性能分析及优化等）；下篇为并行算法编程实现，主要包括非数值
并行算法（排序、串匹配、图论、组合优化和计算几何等）及其ＭＰＩ编程实现和数值计算并行
算法（矩阵运算、线性方程组求解、矩阵特征值计算和傅氏及小波变换等）及其ＭＰＩ编程实
现。-, Main parallel programming foundation (parallel computer system with the structural model, PC cluster structures and parallel programming brief), Parallel Programming Guide (MPI, PVM, HPF and OpenMP, etc.) and the parallel program development approach (visual parallel programming environment, debugging of parallel programs and parallel program performance analysis and optimization, etc.) next parallel algorithm programming, including the non-numerical parallel algorithms (sorting, string matching, graph theory, combinatorial optimization, and computational geometry, etc.) and its MPI programming parallel algorithms and numerical calculation (matrix operations, solving linear equations, matrix eigenvalue calculation and Fourier and wavelet transform, etc.) and its MPI programming. Platform: |
Size: 2525184 |
Author:陈晓东 |
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Description: 真正的3 d双树离散小波变换(DWT)的一个数据集x是使用四个严格采样实现可分3 d DWTs在平行。然后subbands四DWTs结合适当。
-The real the 3 d Doubletree discrete wavelet transform (DWT) data set x four to strict sampling separable 3 d the DWTs In parallel. The then the subbands four DWTs combined appropriately. Platform: |
Size: 1024 |
Author:陈静 |
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Description: 复杂的3 d双树离散小波变换(DWT)同样也引起了小波的两倍作为真正的3 d双树离散小波变换(DWT)。这两个小波在每一个方向,可以解释为真实的和虚构的部分一个复数的3 d小波。复杂的3 d双树被实现为八严格采样可分3 d DWTs操作在并行。然而,不同的过滤器集用于每个三个维度。
-3 d complex- Doubletree discrete wavelet transform (DWT) also caused the wavelet twice as a real 3 d Doubletree discrete wavelet transform (DWT). Two wavelet in each direction, can be interpreted as the real and imaginary part of a complex 3 d wavelet. The complicated 3 d Doubletree is implemented as eight rigorous sampling can be divided into 3 d DWTs operating in parallel. However, a different set of filters for each of the three dimensions. Platform: |
Size: 1024 |
Author:陈静 |
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Description: 复杂的二维双树离散小波变换(DWT)同样也引起了小波在六个不同的方向,但是,在这种情况下有两种小波在每个方向将如下所示。在每一个方向,一个两个小波可以被解释为一个复数的真实部分2 d小波,而其他小波可以被解释为一个复数的虚部2 d小波。因为复杂的版本有两倍的小波作为真正的版本的转换、复杂的版本是4次膨胀。复杂的二维双树被实现为四个严格采样可分二维DWTs操作在并行。然而,不同的过滤器集一起使用的行和列。正如在现实情况下,金额和不同的子带图像进行小波得到定向。复杂的二维双树DWT的图像x是由以下函数计算,cplxdual-The complex 2D Doubletree discrete wavelet transform (DWT) also caused a Wavelet in six different directions, but in this case there are two wavelet in each direction will be as follows. In each direction, a two wavelet can be interpreted as a plural real part of the 2 d wavelet other wavelet can be interpreted as the imaginary part of a complex of 2 d wavelet. Complex version wavelet twice as much as the real version of the conversion, the complex version 4 expansion. The complex 2D Doubletree achieve four rigorous sampling can be divided into two-dimensional DWTs operating in parallel. However, different filter sets with rows and columns. As in the real case, the amount and the different sub-band image to the wavelet get directed. Complex two-dimensional image of Doubletree DWT x is calculated by the following function, cplxdual Platform: |
Size: 1024 |
Author:陈静 |
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Description: PCD 压缩传感使用并行坐标下降算法(冗余字典由各种小波变换和离散余弦变换被用于图像修复-PCD compressed sensing using parallel coordinates down algorithm (redundant dictionary by all sorts of wavelet transform and discrete cosine transform is used for image restoration
Platform: |
Size: 330752 |
Author:薛鹏 |
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