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. 2015 Mar 3;2015:567932. doi: 10.1155/2015/567932

Figure 6.

Figure 6

The classification accuracy and runtime of the dictionary learning of SR1 (K-SVD+OMP) and SR2 (K-Means+OMP). The patch size was 4 × 4 × 4 and the number of nonzero entries was 8. Replacement of the K-SVD by the K-Means can reduce the runtime of the method while keeping the classification accuracy.