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<center>
 
<center>
 
<math>P^{t+1}_{i} = A\cdot P^{t}_{i}</math>
 
<math>P^{t+1}_{i} = A\cdot P^{t}_{i}</math>
 +
 
::其中,<math>P^{t}_{i}=(x^{t}_{i},y^{t}_{i},1),P^{t+1}_{i} = (x^{t+1}_{i},y^{t+1}_{i},1)</math>
 
::其中,<math>P^{t}_{i}=(x^{t}_{i},y^{t}_{i},1),P^{t+1}_{i} = (x^{t+1}_{i},y^{t+1}_{i},1)</math>
 +
 
<math>
 
<math>
 
A = \begin{bmatrix}
 
A = \begin{bmatrix}
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