Mining Engineering Image Recognition Method Based on Simulated Annealing Algorithm

Algorithm 1

Feature extraction algorithm flow.

Input:Sample matrix

     Dictionary

Output:Sparse matrix

(1)

(2), ,

(3)

          ,

(4)

(5)

(6)If I|r|2<&2pork>aq, go to step(7)

   Otherwise ,repeat step(3)–step(5)

(7)The t-th element in the vector

(8)If ,then , repeat steps (2)–(7)

   Otherwise, output