assignment #5 Q 3(part 3)

Rotate pi/6 around the corner

bigT=255*ones(256);
bigT(30:79,64:191)=zeros(50,128);
bigT(50:199,111:146)=zeros(150,36);

theta=(pi)/6;

bigT1=ones(256);

for x=0:255;

for y=0:255;

x1=(x*cos(theta)-y*sin(theta))+256;

y1=(x*sin(theta)+y*cos(theta));

x2=round(x1);

y2=round(y1);

bigT1(mod(x2,256)+1,mod(y2,256)+1)=bigT(x+1,y+1);

end;

end;

imshow(bigT1)
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Skew and rotate:

newbigT=ones(256);

bigT=255*ones(256);

bigT(30:79,64:191)=zeros(50,128);

bigT(50:199,111:146)=zeros(150,36);

theta=(pi)/6;

for x=0:255

for y=0:255

x1=x;

y1=mod((y+1*x),256)+1;

x2=(x1*cos(theta)-y1*sin(theta))+256;

y2=(x1*sin(theta)+y1*cos(theta));

x3=round(x2);

y3=round(y2);

newbigT(mod(x3,256)+1,mod(y3,256)+1)=bigT(x+1,y+1);

end;

end;

imshow(newbigT)