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dct
this is the code for the image compression using discrete cosine transform
- 2010-10-03 02:19:09下载
- 积分：1
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Archive 4
说明： 推荐系统 数据挖掘 数据分析 机器学习 代码(re_sys data mining analysis ml code)
- 2020-06-21 15:40:02下载
- 积分：1
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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
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floyd1
说明： matlab中最短路问题的算法，就是求从网格的起点到终点的长度（总权）最小的通路。 附注释(the shortest path problem in matlab algorithms, is seeking a starting point from the grid to the end of the length of (total) of the smallest channels. Annotated)
- 2008-09-19 22:03:24下载
- 积分：1
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mfile
说明： 包含了《精通MATLAB》书中所有源代码，极具参考与实用价值！(Contains the )
- 2008-10-14 18:56:01下载
- 积分：1
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plot_graphene
MATLAB画vasp能带结构，画石墨烯能带结构(MATLAB painting vasp band structure of graphene band structure painting)
- 2015-04-02 23:49:08下载
- 积分：1
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imagerotation
DIGITAL IMAGE ROTATION CODE IN MATLAB
- 2009-03-18 11:51:42下载
- 积分：1
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MATSLISE2006
MATSLISE is a Matlab application for the numerical study of Schringer
and Sturm-Liouville problems. MATSLISE allows one to compute the eigen-
values and eigenfunctions and to display them graphically.
The numerical methods used are the CP methods (abbreviation for
Constant reference potential Pertubation Method).
(MATSLISE is a Matlab application for the numerical study of Schr鰀inger
and Sturm-Liouville problems. MATSLISE allows one to compute the eigen-
values and eigenfunctions and to display them graphically.
The numerical methods used are the CP methods (abbreviation for
Constant reference potential Pertubation Method).
)
- 2010-10-17 15:56:48下载
- 积分：1
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PWMa
making 3 phase balance 380v 50hz voltage source with pwm
- 2010-10-18 22:01:53下载
- 积分：1
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dtgh
基于动态规划的梯级水库联合优化调度，有详细注释(Joint optimal operation of cascade reservoirs based on dynamic programming, there are detailed notes)
- 2021-05-13 01:30:03下载
- 积分：1
