-
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
-
PSNR_Metric
This is a matlab implementation for calculating PSNR
- 2009-04-20 17:45:15下载
- 积分：1
-
ESEMPIO_KPI_Ristorante
Example of key performance indicators applied on a real problem
- 2010-09-20 06:59:24下载
- 积分：1
-
FilesDragDrop_demo
FilesDragDrop application
- 2005-02-08 09:45:50下载
- 积分：1
-
One-dimensional
一 维 时 域 有 限 差 分 法 MATLAB 代 码(One-dimensional finite difference time domain method MATLAB code)
- 2013-08-06 11:17:01下载
- 积分：1
-
glovetalkii
this is matlab document which is used for data in matlab
- 2011-05-21 13:10:00下载
- 积分：1
-
intelligence
说明： 只能控制理论的教学课件，非常经典的教学资料(Control theory can only be teaching, teaching and learning materials is very classic)
- 2009-07-27 16:54:19下载
- 积分：1
-
00
说明： 用于在MATLAB面板里显示灰度图形用。(this is used in display panels with gray-scale graphics in matlab.)
- 2009-05-27 17:51:43下载
- 积分：1
-
multicarriers_modulations
Amplitude Clipping and Iterative Reconstruction of
MIMO-OFDM Signals with Optimum Equalization
- 2010-12-16 02:34:39下载
- 积分：1
-
matlabtext2
考察温度x对产量y的影响，测得下列10组数据：求y关于x的线性回归方程，检验回归效果是否显著，并预测x=42℃时产量的估值及预测区间（置信度95 ）
示例包含在内(X on the output of the temperature study of the impact of y, measured the following 10 sets of data: for y on x of the linear regression equation to test whether the effect of a significant regression and prediction when x = 42 ℃, and the valuation of yield prediction interval (confidence level 95 ) sample included)
- 2020-12-14 17:49:14下载
- 积分：1
