A Sparse Representation Based Method to Classify Pulmonary Patterns of Diffuse Lung Diseases

Figure 7

The classification accuracy and runtime of recognizing one VOI (except feature extraction) of SR2 (K-Means+OMP) and SR3 (K-Means+OMP₁). The patch size was and the number of nonzero atoms was 3000. Replacement of the OMP by the OMP₁ can reduce the runtime of the method and achieve good performance when the value of the sparsity is small.

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