medical-graphics-treat

for movie making in matlab

一个随机数产生的MATLAB例子，内含三种随机数生成方法。[0，1]分布，N(0,1)正态分布，n个N(a,b)正态分布(a random number generated by MATLAB example, consisted of three random number generation method. [0,1] distribution, N (0,1) normal, n N (a, b) normal)

产生右图所示图像f1(m,n)，其中图像大小为256×256，中间亮条为128 ×32，暗处=0，亮处=100。对其进行FFT： ① 同屏显示原图f1(m,n)和FFT(f1)的幅度谱图； ② 若令f2(m,n)=（-1）m+n f1(m,n)，重复以上过程，比较二者幅度 谱的异同，简述理由； ③ 若将f2(m,n)顺时针旋转90 度得到f3(m,n)，试显示FFT(f3)的幅 度谱，并与FFT(f2)的幅度谱进行比较； ④ 若将f1(m,n) 顺时针旋转90 度得到f4(m,n)，令f5(m,n)=f1(m,n)+f4(m,n)，试显 示FFT(f5)的幅度谱，并指出其与FFT(f1)和FFT(f4)的关系； ⑤ 若令f6(m,n)=f2(m,n)+f3(m,n)，试显示FFT(f6)的幅度谱，并指出其与FFT(f2)和 FFT(f3)的关系，比较FFT(f6)和FFT(f5)的幅度谱。(Generating an image f1 (m, n) shown in the figure, wherein the image size is 256 256, the intermediate light bar 128 32 0 = dark, bright Department 100. Its FFT: ① screen display picture f1 (m, n) and the FFT (f1) of the amplitude spectrum ② If so f2 (m, n) = (-1) m+n f1 (m, n), repeat The above process, comparing the amplitude spectrum of the similarities and differences between the two, brief reasons ③ If f2 (m, n) 90 degrees clockwise to get f3 (m, n), try to display FFT (f3) the amplitude spectrum and with the FFT (f2) comparing the amplitude spectrum ④ If f1 (m, n) obtained by 90 degrees clockwise f4 (m, n), so f5 (m, n) = f1 (m, n)+f4 (m, n ), try to display FFT (f5) amplitude spectrum, and pointed out its relationship with the FFT (f1) and FFT (f4) of ⑤ If so f6 (m, n) = f2 (m, n)+f3 (m, n) and try to display the FFT (f6) amplitude spectrum, and pointed out its relationship with the FFT (f2) and FFT (f3), comparing FFT (f6) and FFT (f5) amplitude spectrum.)

说明：  采用matlab编写，基于OPTA细化算法，适合入门级新手用，希望对大家有用(Using matlab to prepare, based on OPTA thinning algorithm, suitable for entry-level novice, and I hope useful for all of us)

matlab在大学物理关于衍射的模拟，用于方便学习(Matlab university physics experiment)

快速、精确频率估计算法，噪声情况下语音信号频率估计(Fast, accurate frequency estimation algorithm, the case of speech noise frequency estimation)

用于对大规模文件进行操作，但对文件内容有很大的局限性，仅供参考思路(For large-scale file has many limitations, but the contents of the file are for reference only ideas)

突然两相负载短路无阻尼绕组用matlab编程(Two-phase sudden short-circuit load without damping windings)

说明：  基于MATLAB的小波分析基础丛书，通俗易懂，很容易上手(Based on MATLAB-Wavelet Analysis basic books, user-friendly, it is easy to use)

说明：  通过Matlab仿真，对有无信道估计对系统误码率的影响进行了比较，对LS和MMSE估计算法进行比较(Matlab simulation, whether the channel estimation system bit error rate compared with LS and MMSE estimation algorithm compares)