-
JPEGimageCompressiontechniquesimplementationandopt
摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
(Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete )
- 2009-03-29 08:39:04下载
- 积分：1
-
bpsk_qpsk_qam_ofdm_cdma_mac
从基本的bpsk,qpsk,qam到实际的ofdm系统，cdma链路，mac层仿真分析，(From basic bpsk, qpsk, qam to the actual ofdm systems, cdma link, mac layer simulation analysis,)
- 2010-10-26 20:47:07下载
- 积分：1
-
frft
这是一个分数阶傅里叶算法的经典matlab程序(This is a fractional Fu Liye algorithm is the classic matlab program
)
- 2013-10-25 11:54:48下载
- 积分：1
-
tt
说明： 读取RGB24彩色图像的dat文件，没帧图片大小为320*240，然后对图片进行直方图均衡，一种是调用matlab接口，一种是自己写的，读取C语言处理的dat文件，都显示出来进行对比(Read the RGB24 color image dat file, no frame picture size is 320* 240, and then the image histogram equalization, a call matlab interface, one is to write your own, read dat files of the C language processing, displayed for comparison)
- 2013-04-19 14:10:07下载
- 积分：1
-
Helmholtz-MATLAB
说明： 分析亥姆霍兹线圈轴线磁场分布现象的数学模型基础上, 运用MATLAB对亥姆霍兹线圈轴线磁场均匀分布进行验证及仿真的方法。(Axis Helmholtz coil magnetic field distribution of the mathematical model of the phenomenon, based on the use of MATLAB on the axis of the Helmholtz coil magnetic field uniform method of verification and simulation.)
- 2011-03-08 10:17:11下载
- 积分：1
-
Matlab-
这是一本介绍matlab工具箱的书籍，很全面。(This is an introduction to matlab toolbox of books, is very comprehensive.)
- 2015-01-20 12:30:40下载
- 积分：1
-
mLMNN2.3
多核处理多特征的融合（matlab实现——提供测试数据）(Multicore processing multi-feature fusion (matlab achieve- to provide test data))
- 2013-11-30 17:48:16下载
- 积分：1
-
shuizhunwangpingcha
测绘专业的 水准网平差算例 用MATLAB语言实现的(Mapping the standard of professional network adjustment example of using MATLAB language)
- 2010-07-05 11:39:51下载
- 积分：1
-
bpskmimommse
Ber of MMSE for BPSK MIMO
- 2014-11-15 01:27:12下载
- 积分：1
-
PSOFully
Fully informed particle swarm optimization for optimizing a general function.
- 2014-02-13 13:48:37下载
- 积分：1
