shiyan2

this is the programs for robert prewwitt sobel operators for images from gonazalvez book digital image processing

傅里叶变换后频谱图 B：陷波函数作用后的频谱图 C：经逆变换的滤波后图像，效果不是很理想 Ifft2：为验证自己的快速傅里叶变换程序的正确性，用matlab自带逆变换程序将频谱逆变换后图形，与原图相符，说明快速傅里叶变换程序正确。(This is a FFT )

Refprop library. This library calculates thermodynamics properties for several refrigerants

小波包分析提取振动信号中的特征频率，有借鉴意义哦，LDPC码的完整的编译码。( Wavelet packet analysis to extract vibration signal characteristic frequency, There are reference Oh, Complete codec LDPC code.)

使用此函数来提取一个地理坐标输入字符串了。该功能非常灵活，因此，协调可能位于任何地方的字符串，并可能有许多的格式之一。(Use this function to extract one geographical coordinate out of an input string. The function is extremely flexible, thus the coordinate may be located anywhere in the string and may have one of many formats.)

Returns the Multilook Amplitude Ratio for correlated channels(Returns the Amplitude Ratio for Multilook correlated channels)

说明：  如题，关于HHT变换的三种方法，是目前最全的。(The three methods of HHT transformation are the most complete at present.)

Matlab的函数及指令提供给大家查询maltab指令的方便

Character recognization

image mosaicing done in MATLAB