Description: jpeg在matlab下的仿真实现，整个程序运行还行，共享给大家-jpeg of the Matlab Simulation, and the whole process has run OK, for everyone to share Platform: |
Size: 9216 |
Author:陆鹏 |
Hits:
Description: 本部分源码是处理静态图像时候，需要的一部分代码，希望对于那些正在研究图像处理技术的朋友有用。-This section is the source when dealing with a static image, the need for part of the code, I hope for those who are studying image processing technology useful friends. Platform: |
Size: 80896 |
Author:沈志冈 |
Hits:
Description: 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 Platform: |
Size: 523264 |
Author:压子 |
Hits:
Description: 对JPEG2000压缩编码后的码流文件用matlab进行RS信道编码，再BSC信道仿真，RS解码，计算PSNR- with JPEG2000 code stream file， using matlab to simulated the RS channel coding, and then BSC channel simulation, RS decoding, calculation of PSNR Platform: |
Size: 1024 |
Author:王冲 |
Hits:
Description: 这个m代码包含了一系列的小波变换的实现函数，有Daubechies,symlets,splines,S+P小波, JPEG2000小波变换等. 可以进行1D或者二维小波变换。-The m code contains a series of wavelet transform to achieve function, and Daubechies, symlets, splines, S+ P wavelets, JPEG2000 and other wavelet transform. Can be 1D or two-dimensional wavelet transform. Platform: |
Size: 55296 |
Author:袁焕江 |
Hits:
Search - code for jpeg2000 matlab