How to formulate the following matrices?

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M
M 2022-5-18
评论： M 2022-5-19
How to formulate the following matrices? (which is called the transformation matrices)
Theta is the degree angle which stored in file 'Angles' ,,, x,y is the origins which stored in file origin
T = [cos(theta(i)) -sin(theta(i)) x(i)
sin(theta(i)) cos(theta(i)) y(i)
0 0 1]
  2 个评论
Image Analyst
Image Analyst 2022-5-18
编辑：Image Analyst 2022-5-18
You formulated a matrix T. What's the problem? Explain in more detail after reading this:
TUTORIAL: How to ask a question (on Answers) and get a fast answer
For example you might include a diagram to show what needs to be rotated.
FYI
Spatial transformations Defining and applying custom transforms Steve on Image Processing
Catalytic
Catalytic 2022-5-18
编辑：Catalytic 2022-5-18
I need help in iterating my thetas and origins into this matrix and storing the results.
You shouldn't. It's a trivial Matlab for-loop exercise.

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采纳的回答

Matt J
Matt J 2022-5-18
T=makehgtform('translate',[x(i),y(i),0],'zrotate',theta(i));
T=T([1,2,4],[1,2,4])

更多回答（1 个）

Catalytic
Catalytic 2022-5-18
编辑：Catalytic 2022-5-18
Why not just -
T=zeros(3,3,n);
for i=1:n
T(:,:,i) = [cos(theta(i)) -sin(theta(i)) x(i)
sin(theta(i)) cos(theta(i)) y(i)
0 0 1];
end
  1 个评论
M
M 2022-5-19
@Catalytic, It could be also, but the above answer give you the transormation matrix directly without need to formulate it.

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