求MATLAB代码答:4.灰度线性变换MATLAB 程序实现如下:I=imread('xian.bmp');subplot(2,2,1),imshow(I);title('原始图像');axis([50,250,50,200]);axis on;%显示坐标系I1=rgb2gray(I);subplot(2,2,2),imshow(I1);title('灰度图像');axis([50,250,50,200]);axis on; %显示坐标系J=imadjust(I1,[0.1 0.5],...
怎么做,大神求救。用MATLAB绘制信号f(t)的波形,线性变换为f(t-4)和...答:f2=sym('(heaviside(t-1)-heaviside(t-2))');f3=f1+f2;figure;subplot(311),ezplot(f3,[0,10]);title('f(t)');f4=subs(f3,t,t-4);subplot(312),ezplot(f4,[0,10]);title('f(t-4)');f5 = subs(f3,t,4-2*t);subplot(313),ezplot(f5,[0,10]);set(gca,'Ylim',[0,...
如何用MATLAB编写双线性变换法答:wp1=0.3*pi;wp2=0.6*pi;ws1=0.4*pi;ws2=0.5*pi;Ap=3;As=10;Fs=1;B=ws2-ws1;w0=sqrt(ws1*ws2);wp=max(abs(wp1),abs(wp2));ws=1;[N,wc]=buttord(wp,ws,Ap,As,'s');[num,den]=butter(N,wc,'s');[numt,dent]=lp2bs(num,den,w0,B);[numd,dend]=bilinear(...