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. 2020 May 15;15(5):e0232776. doi: 10.1371/journal.pone.0232776

Table 6. Comparison of image retrieval methods.

Average accuracies and standard deviations of 1, 3, 5, 7, and 9 content based image retrievals for 10-fold with OtoMatch, traditional KNN, and SVM classifications using handcrafted features.

Retrieve # Image Similarity Measurement OtoMatch KNN classification and handcrafted features SVM classification and handcrafted features
Average Standard Deviation Average Standard Deviation Average Standard Deviation
Retrieve1 Chebychev 81.14% 3.94% 63.68% 3.68% 59.92% 5.19%
Cosine 81.71% 6.87% 65.59% 6.81% 61.00% 5.40%
Retrieve3 Chebychev 81.56% 3.93% 64.22% 4.35% 60.36% 2.25%
Cosine 82.33% 4.08% 62.78% 4.63% 59.92% 3.34%
Retrieve5 Chebychev 81.18% 4.05% 61.95% 4.11% 58.29% 2.87%
Cosine 82.60% 3.89% 61.18% 3.87% 57.06% 2.02%
Retrieve7 Chebychev 81.79% 4.13% 60.07% 4.31% 57.23% 3.45%
Cosine 82.47% 4.12% 59.43% 3.81% 56.41% 3.53%
Retrieve9 Chebychev 81.36% 4.42% 58.61% 3.72% 55.42% 3.54%
Cosine 82.26% 3.66% 59.19% 3.50% 56.27% 2.83%