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DSPview4
a fifth version of Dsp view code in matlab
- 2013-10-31 18:34:11下载
- 积分:1
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DCTlicheng
研究表明,构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时,离散
余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵,所以离散余弦变换矩阵与自然图像的
K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角
阵,即除了对角线元素以外,其它很多元素都近似为0,并且在左上角集中了主要能量。这
反映了自然图像大部分区域变化不大,亮度突变只占少数,即图像能量以低频成分为主的特
性。通过变换后的量化,舍弃对视觉效果影响较小的次要信息,可达到进一步的压缩效果。
虽然从去相关性能的意义上讲,DCT是一种次于K一L变换的准最佳变换,但是从算法实现的角度来看,DCT则远远优于K一L变换。首先,当图像的分块大小确定后,DCT的变换矩阵也就随之确定了,不随输入信号的统计特性变化而变化 其次,二维DCT能够分解成两次一维DCT,有利于硬件实现。
(Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete
The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images
Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix
Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this
Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image
Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect.
Although from related to the performance of the sense, DCT is a kind o)
- 2013-11-25 16:00:24下载
- 积分:1
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SparseDeconv_software
基于1范数的稀疏信号反卷积算法的程序代码,语音信号、迭代算法(The sparse signal deconvolution algorithm based on 1 norm of program code, speech signal, an iterative algorithm)
- 2015-05-02 16:32:25下载
- 积分:1
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kalman
Visual C++编程实现Kalman滤波器(It realize the Kalman filter with visual c++)
- 2010-08-11 20:12:39下载
- 积分:1
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cuk
cuk converter step up and step down dc converter
- 2014-08-09 17:45:05下载
- 积分:1
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fpv112
FPV相册傻瓜式教程,对于想使用FPV的新手来说值得一看。(FPV album fool tutorial, you want to use for novice FPV worth a visit.)
- 2015-03-05 16:08:10下载
- 积分:1
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Achievedwithmatlabneuralnetworknonlinearsystem
用matlab实现模糊神经网络,在非线性系统中的应用(Achieved with matlab neural network, nonlinear system)
- 2010-05-12 12:25:19下载
- 积分:1
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LInjie-PCA
关于主成分分析方法中T^2统计量和SPE统计量的临界故障检测幅值计算的代码。(On principal component analysis method code T ^ 2 statistic and critical failure detection amplitude SPE statistic calculated.)
- 2014-11-29 11:10:53下载
- 积分:1
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mat
MATLAB编程源码,结果为画出多个正六边形。(MATLAB programming source code, the result is to draw more than regular hexagon.)
- 2011-02-12 09:01:54下载
- 积分:1
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newton-interplote
利用matlab编写的牛顿插值法进行插值计算(Newton interpolation interpolation using Matlab prepared
)
- 2012-04-09 19:25:37下载
- 积分:1