isodata

Welch法：Welch法对Bartlett法进行了两方面的修正：一是选择适当的窗函数w(n)，并在周期图计算前直接加进去，加窗的优点是无论什么样的窗函数均可使谱估计非负。二是在分段时,可使各段之间有重叠，这样会使方差减小。(Welch method: Welch method of Bartlett method amendments in two respects: First, select the appropriate window function w (n), and in the cycle before CALPHAD directly incorporated, plus the advantage of the window, no matter what kind of window function can be so spectral estimation of non-negative. Second, when in subparagraph can overlap between paragraphs, this would reduce the variance.)

Zernike moments calculation. Two functions, one for polynomial calculation and one for moments calculation

几个经典的测试函数，sphere schaffer ackel girewank rosenbrock(Several classical test functions, sphere schaffer ackel girewank rosenbrock)

巴特沃斯數字低通濾波器。採樣率8000HZ，fp=2100hz,fs=2500hz,Rp=3db,Rs=25db.(butterworth LPF)

说明：  将图像从RGB颜色空间转换成lab颜色空间(Transfer image s color space from RGB to lab)

matlab中simulink仿真教材，非常实用，内容充实，值得学习。(matlab simulink simulation in teaching, very practical, informative, worth learning.)

xls to matlab, convert the .xls file to matlab workspace.

升采样，用于分析ISAR/SAR成像算法成像质量，分析点目标距离向/方位向剖面切片，观察主瓣与旁瓣，也可以用于定性分析不同算法对同一目标点成像质量的好坏。也可用于分析峰值旁瓣比与积分旁瓣比等。(Liter sample for analysis ISAR/SAR imaging algorithm image quality, the analysis points to the target distance/azimuth cross-sectional slices, observe the main lobe and side lobes to be good or bad for the qualitative analysis of different algorithms on the same target image quality. It can also be used to analyze the ratio of peak sidelobe sidelobe integral ratio.)

说明：  一维直方图最大熵法分割图像，自己写的matlab代码，多多指教(One-dimensional histogram maximum entropy image segmentation, to write the matlab code, exhibitions)

解决最大匹配问题的程序，经过调试，运行正常，并附上测试程序(Maximum matching problem solving process, after commissioning, operating normally, along with test procedures)