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MATLABStuday

于 2010-05-14 发布 文件大小:2808KB
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  Matlab学习的好教材:数值计算与数据分析(Good material for learning Matlab: numerical calculation and data analysis)

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  • nbzh
    说明:  将政务公开网上数据直接转换成日常工作中所需瓣台帐,(The open web-based data directly to the government to convert the daily work required in the accounting flap,)
    2010-03-20 15:43:14下载
    积分:1
  • Susan-cornerdetect
    susan算法角点检测算法matlab源程序(susan corner detection algorithm algorithm matlab source)
    2011-04-24 15:47:21下载
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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
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    2013-05-11 10:36:30下载
    积分:1
  • work
    1.将BMP图像内容读入内存数组。 2. 调整图像的灰度,对图像进行灰度变换(反变换)。 3. 对图像进行较正,分别取值为0.4,0.6,0.8.(1. The BMP image content is read into memory array. 2 Adjust the gray image, the image gray-scale transformation (inverse transform). 3 more positive image, respectively, the value of 0.4,0.6,0.8.)
    2014-01-14 19:48:49下载
    积分:1
  • 040920108
    均值滤波,加权滤波,中值滤波的MATLAB实例,用于图象及信号的处理(Mean filter, weighted filtering, median filtering of the MATLAB examples for image and signal processing)
    2008-06-04 11:39:58下载
    积分:1
  • MatLab-programming
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    2011-03-04 16:59:53下载
    积分:1
  • matlab
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    2013-01-31 17:20:00下载
    积分:1
  • laplacia
    可直接运行的基于拉普拉斯以及小波变换的多种融合方法的代码(Can be run directly based on the Laplace and the wavelet transform multiple fusion method code)
    2013-11-08 00:04:11下载
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    2013-11-23 13:39:57下载
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