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OpticaCharacterRecognition
open charechter stics recognization in matlab/simulink
- 2010-12-31 16:00:32下载
- 积分：1
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matlab
在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)
- 2013-03-12 13:47:15下载
- 积分：1
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UnEncrypted
COMMANDE VECTORIELLE DE MACHINE ASYNCHRONE
EN ENVIRONNEMENT TEMPS RéEL MATLAB/SIMULINK
- 2015-02-27 18:06:41下载
- 积分：1
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gscale
matlab的gscale函数功能是将强度图像等映射到别的值范围(Function of matlab gscale intensity image is mapped to a different range of values, etc.)
- 2013-11-13 14:58:48下载
- 积分：1
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lab2
bandpassfilter which can be selectively attenuated at specific frequencies. It can also be used to bandstop
- 2013-04-21 12:38:25下载
- 积分：1
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ANEIEABCDE-master
一种新的图像加密方法，把图像看成3位的，来进行3维图像加密。。。。。。。。。。。。。。(A New Approach of Image Encryption Using 3D)
- 2020-06-22 02:20:01下载
- 积分：1
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MATLAB
按照说明,将此包内相应文件包替换Matlab r2007a安装目录下相应该包,就可以让matlab r2007a运行在win7的主题下(matlab r2007a installl on windows7)
- 2010-06-12 12:09:46下载
- 积分：1
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GSM
用Markov模型建立信道概率统计模型，是不错的GSM信道仿真的资料(Channel Markov model with probabilistic statistical model is a good simulation of GSM data channel)
- 2010-10-21 09:15:12下载
- 积分：1
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gailv
可以进行概率计算，也可以进行取余运算，可以实现图像的基本操作(Probability can be calculated, but also can take over operations, the basic operation of the image can be achieved)
- 2010-01-03 10:28:53下载
- 积分：1
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attachments_2010_04_18
this is the source code for novel watermarking approaches for copyright protection of digital media such as videos and images using sws algorithm.
- 2011-09-23 16:50:30下载
- 积分：1
