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weifen_lgkt
可以方便的求解一阶微分方程,代码思路清晰,有例子解释(Can be convenient to solve first-order differential equations, the code clear, there is an example to explain)
- 2009-03-09 16:11:38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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iac
活动轮廓模型中的iac模型,集合侧地线和无边缘活动轮廓模型的一种。(Active contour model iac model, a collection of geodesics and the active contour model without edges a.)
- 2010-09-18 08:14:08下载
- 积分:1
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fdtd_D1_tm_pml
二维,FDTD,PML,Malab语言。(Vacuum point source radiation, two-dimensional, FDTD, PML, Malab language.)
- 2009-06-17 09:41:14下载
- 积分:1
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matlab-time-frequency-analysis
电子工业出版社葛哲学的matlab时频分析及应用一书,配合matlab时频分析工具箱函数使用。(matlab time-frequency analysis and application. it s a pdf file.)
- 2012-04-20 18:20:25下载
- 积分:1
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NI-VeriStand-Custom
matlab sourcecodes documents
- 2012-11-03 10:47:31下载
- 积分:1
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zantaiwendingfenxi
对单机无穷大系统仿真研究,对故障类型设计,判别(Research on the simulation of single machine infinite bus system)
- 2017-12-16 18:48:55下载
- 积分:1
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DIPmatlab
数字图像处理及matlab实现 于成波著 适合matlab及图像处理爱好者(Digital image processing and matlab for implementation on into the waves with matlab and the image processing enthusiasts)
- 2010-05-15 21:57:17下载
- 积分:1
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graph-coloring
matlab编写的图着色算法,并用智能优化算法(模拟退火)去寻找其图着色的最优解(Matlab prepared by the graph coloring algorithm, and using intelligent optimization algorithm (simulated annealing) to find the optimal solution of the coloring of the graph)
- 2020-10-10 20:47:33下载
- 积分:1
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EMD
说明: 一种新型自适应信号时频处理方法,特别适用于非线性非平稳信号的分析处理。(A new adaptive signal time-frequency processing method is proposed, which is especially suitable for the analysis and processing of non-linear and non-stationary signals.)
- 2020-06-20 02:40:01下载
- 积分:1