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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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DisparitymapSSDSADNCCaRMS-Error
Disparity Map computation by Local correspondence search SAD, SSD and NCC.
RMS error between the groundtruth and computed disparity map.
- 2015-03-09 15:13:47下载
- 积分：1
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optimPID
PID参数整定，带图形界面，可以研究研究参数调节和gui编写技巧(PID parameter tuning, with a graphical interface can be studied the study parameter adjustment and gui prepared to skills)
- 2021-03-03 11:19:33下载
- 积分：1
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APF_zhihuan
说明： 有源功率因数校正仿真模型，采用滞环电流控制的方法。(The simulation model of active power factor correction adopts the method of hysteresis current control.)
- 2020-05-30 20:48:56下载
- 积分：1
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HAF
an Adaptive Fuzzy Filter for Restoring Highly
Corrupted Images by Histogram Estimation
- 2013-07-15 02:37:22下载
- 积分：1
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1
加入高斯白噪声的信道模拟,在学习的过程中，做这样的仿真是很有必要的(The simultor of AWGN)
- 2014-12-04 22:39:55下载
- 积分：1
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actuator11
Another file of actuator example.
- 2014-01-16 17:33:33下载
- 积分：1
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CubicPlateDemo
matlab 车牌识别定位程序 挺不错的 实现功能简单()
- 2021-04-06 20:59:02下载
- 积分：1
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BPSKbit_code
matlab source code for OFDM channel
- 2010-05-24 17:06:51下载
- 积分：1
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pcode-sh42r8
matlab实现的遗传算法和蚁群算法，结合了JwZIYT算法的优点，解决Agzwzah问题，求其最优解的整个步骤，是个不错的程序，调试没有错误
(Genetic algorithm and ant colony algorithm matlab implementation, combined with the advantages ofJwZIYT algorithm to solve Agzwzah problem, the entire step of seeking the optimal solution, is a good program, no error debugging
)
- 2015-12-26 11:23:18下载
- 积分：1
