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winwin
This is a matlab code for processing an image by selecting non-overlapping blocks. This code also uses built in functions in matlab
- 2012-10-03 17:04:28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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QuantMuLawTables
QuantMuLawTables using matlab
- 2013-03-12 16:42:06下载
- 积分：1
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Flight-Vehicle-Design
基于分布式视觉的飞行器位姿估计与路径规划(Document of design)
- 2014-12-08 08:48:57下载
- 积分：1
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RK45
变步长四阶龙格库塔法，可自己控制误差精度，可用于变参微分方程组，亲测可用(variable-step
runge-kutta)
- 2018-01-23 09:40:50下载
- 积分：1
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(source_code_updated_2009)Numerical_Methods_in_Eng
Numerical Methods in Engineering with Matlab第二版源码(source code for Numerical Methods in Engineering with Matlab(2nd Edition,2009))
- 2010-09-03 10:44:37下载
- 积分：1
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multipath-fading
matlab code for multipath rayleigh fading
- 2011-07-06 02:04:52下载
- 积分：1
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Golden-Sun-certification-mark
这是中国金太阳认证标志，光伏并网方面的资料(
This is the Chinese Golden Sun certification mark, photovoltaic grid-relevant information)
- 2015-02-05 11:17:45下载
- 积分：1
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EvaluationDescriptor
Evaluation Descriptor
- 2012-11-06 10:23:27下载
- 积分：1
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Control-Difuso-de-Vehiculo-Volador-no-Tripulado
Fuzzy Logic Control for mini-drone, in spanish and for matlab and microchip assembler...
- 2013-05-05 02:24:41下载
- 积分：1
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