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 |
Hits:
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: 在数字信号处理中,高速高精度的三角函数发生器有着广泛的应用。传统的方法是采用查表、多项式展开或近似的方法。这些方法在速度、精度、简单性和高效实现方面不能兼顾。对比而言,用CORDIC 实现的三角函数发生器能很好地兼顾这些方面,并且极适合于VLSI 实现。提出了一种基于流水线CORDIC的离散三角函数发生器。-In the digital signal processing, high-speed high-precision trigonometric function generator has a wide range of applications. The traditional method is the use of look-up table, polynomial or similar methods. These methods in terms of speed, precision, simplicity and efficient implementation can not take into account. In contrast, the use of CORDIC trigonometric function generator can achieve a good balance between these areas, and very suitable for VLSI realization. A Pipelined CORDIC-based discrete trigonometric function generator. Platform: |
Size: 81920 |
Author:黄文林 |
Hits:
Description: ：CORDIC算法将复杂的算术运算转化为简单的加法和移位操作，然后逐次逼近结果。这种方法很好的兼顾了精度、速度和硬件复杂度，它与VLSI技术的结合对DSP算法的硬件实现具有极大的意义，因而在数字信号处理领域得到了广泛应用。本文首先简要介绍了CORDIC算法的原理，然后详细描述了双模式（旋转/向量）CORDIC算法的预处理和后处理，并且基于FPGA实现了流水线双模CORDIC算法。-By converting complex arithmetic into simple operations such as adding and shift then gradually approach the exact result, CORDIC algorithm keeps balance between precision, speed and hardware complexity, and whose combination with VLSI performs a great role in the hardware implementation of DSP algorithm, enhance CORDIC has been widely used in the field of digital signal processing. We studied the principle of CORDIC algorithm, and described the pre and post process of dual mode CORDIC algorithm, then the pipelined dual-mode CORDIC algorithm is implemented based on FPGA. Platform: |
Size: 394240 |
Author:daisywmc |
Hits:
Description: vlsl 数字信号处理系统设计，非常好的书适合搞算法的人学习哦-vlsl digital signal processing system design, very good book for people who engage in learning algorithms Oh Platform: |
Size: 13031424 |
Author:weizuox |
Hits:
Description: 该代码是设计一个48阶FIR滤波器的文档，该设计方案主要运用了数字信号处理VLSI实现中的折叠的方式。-The code is a 48-order FIR filter design document, the main use of the design of VLSI implementation of digital signal processing in the way of folding. Platform: |
Size: 793600 |
Author:shenjian |
Hits:
Description: 扩频通信数字基带信号处理及其VLSI实现。扩频通信方面的经典教材，很多设计的借鉴来源，张欣著-Spread spectrum communication digital baseband signal processing and VLSI implementation. Spread spectrum communication aspects of the classic textbook, many design reference sources, Zhang Xin, the Platform: |
Size: 5265408 |
Author:wu |
Hits:
Description: This the first comprehensive treatment of the oretical aspects of the discrete cosine transform (DCT), which is being recommended by various standards organizations, such as the CCITT, ISO etc., as the primary compression tool in digital image coding. The main purpose of the book is to provide a complete source for the user of this signal processing tool, where both the basics and the applications are detailed. An extensive bibliography covers both the theory and applications of the DCT. The novice will find the book useful in its self-contained treatment of the theory of the DCT, the detailed description of various algorithms supported by computer programs and the range of possible applications, including codecs used for teleconferencing, videophone, progressive image transmission, and broadcast TV. The more advanced user will appreciate the extensive references. Tables describing ASIC VLSI chips for implementing DCT, and motion estimation and details on image compression boards are also provided.-This is the first comprehensive treatment of the theoretical aspects of the discrete cosine transform (DCT), which is being recommended by various standards organizations, such as the CCITT, ISO etc., as the primary compression tool in digital image coding. The main purpose of the book is to provide a complete source for the user of this signal processing tool, where both the basics and the applications are detailed. An extensive bibliography covers both the theory and applications of the DCT. The novice will find the book useful in its self-contained treatment of the theory of the DCT, the detailed description of various algorithms supported by computer programs and the range of possible applications, including codecs used for teleconferencing, videophone, progressive image transmission, and broadcast TV. The more advanced user will appreciate the extensive references. Tables describing ASIC VLSI chips for implementing DCT, and motion estimation and details on image compression boards Platform: |
Size: 20508672 |
Author:张超 |
Hits:
Description: The fundamental concept of digital signal operations includes addition, subtraction, multiplication and division etc. VLSI considers the performance of design based on area, power and speed. It also takes into account other parameters such as correctness, reliability and precision of results. The most challenging among all the arithmetic operations is multiplication. It is basically due to its wide application in digital signal processing to improve the quality of output signal. A novel approach of high speed multiplication is using Q-format and common sub-expression elimination can be achieved at the cost of reduced precision. Platform: |
Size: 2469888 |
Author:altaf |
Hits:
Description: The fundamental concept of digital signal operations includes addition, subtraction, multiplication and division etc. VLSI considers the performance of design based on area, power and speed. It also takes into account other parameters such as correctness, reliability and precision of results. The most challenging among all the arithmetic operations is multiplication. It is basically due to its wide application in digital signal processing to improve the quality of output signal. A novel approach of high speed multiplication is using Q-format and common sub-expression elimination can be achieved at the cost of reduced precision. Platform: |
Size: 39936 |
Author:altaf |
Hits:
Description: An analog signal processing integrated circuit for microcantilever array has been designed for pressure measurement in biomedical applications. Platform: |
Size: 1183744 |
Author:praba |
Hits:
Search - vlsi signal processing