中国7大地理分区

此M文件主要利用区域生长和边缘检测进行图像分割(image segment by region grow )

说明：  这是一个实现图像缩放的MATLAB源代码，可以有用户自己调节缩放的倍数(This is an image scaling to achieve the MATLAB source code, users can zoom in multiples of its own regulation)

能量检测法是一种比较简单的信号检测方法[1]， 属于信号的非相干的检测， 直接对时域信号采样值求模，然后平方即可得到；或利用FFT转换到频域，然后对频域信号求模平方也可得到。它无需知道检测信号的任何先验知识，对信号类型也不作限制。 实际上，能量检测是在一定频带范围内作能量积累，如果积累的能量高于一 定的门限，则说明信号的存在；如果低于一定的门限，则说明仅有噪声。能量检 测的出发点是信号加噪声的能量大于噪声的能量。能量检测方法对信号没有作任何假设，是一种盲检算法。 此代码“利用FFT转换到频域，然后对频域信号求模平方”方法来实现对用户的检测。(In fact, energy detection is used for energy accumulation in a certain frequency range. If the accumulated energy is higher than a certain threshold, the existence of the signal is indicated. If the threshold is lower than the threshold, then only noise is indicated. The starting point of energy detection is that the energy of signal plus noise is greater than that of noise. The energy detection method does not make any assumptions about the signal, and it is a blind detection algorithm. This code "converts the frequency domain into the frequency domain by FFT, then calculates the square of the square of the frequency domain signal" to realize the detection of the user.)

这是vtk结合MFC在一个对话框内进行面绘的代码，读入图像的格式为DICOM(vtk This is a combination of the MFC dialog within the code face painting, Reading into the image of the DICOM format)

这是一个很好的彩色图像分割源代码，实验结果不错，希望对大家有帮助(This is a good color image segmentation source code, experimental results well, want to help everyone)

knn k近邻算法，可选择欧式距离或者曼哈顿距离(knn k nearest neighbor, Euclidean distance or Manhattan can choose the distance)

数字图象处理算法的演示，包括：图象的DFT和逆DFT，图象的FFT和逆FFT，在图象中加入正弦噪声，图象的模板运算实现图象平滑和锐化等等。(digital image processing algorithms demo, including : Image DFT and inverse DFT, FFT image and inverse FFT, in the image by adding sinusoidal noise, the template image Operational Image sharpening and smoothing and so on.)

说明：  本程序主要用于进行CCD相机内外参标定，摄影测量。(This procedure is mainly used for calibration and photogrammetry of internal and external parameters of CCD camera.)

程序可实现dwg文件注记的批量替换, 可根据需要进行扩展。(Dwg file program allows batch replacement Note)

采用FDTD时域有限差分法计算电磁波的传播问题等,(The finite difference time-domain (FDTD) method is used to calculate the propagation of electromagnetic wave.)