Fig. 1. Structure of SIFT+k-NN model. The image extracted by SIFT(a), Summed descriptors(b) and k-NN(c).
Fig. 2. Structure of CNN model (*: (No. of pixels, No. of pixels, RGB value), **: (No. of pixels, No. of pixels, No. of dimension), ***: (No. of nodes)).
Fig. 3. Accuracy of SIFT+k-NN according to k index.
Fig. 4. Predicted descriptors clusters per class (a) and distribution of feature points classified as cluster 5 (b).
Fig. 5. Loss and Accuracy of CNN model according to Epoch.
Fig. 6. Knot image failed to classify.
Table 1. Confusion matrix of SIFT+k-NN model at k index = 17.
Table 2. Confusion matrix of CNN model after 1205 epochs
참고문헌
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