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. 2014 Nov 7;9(11):e112475. doi: 10.1371/journal.pone.0112475

Figure 3. Replacement for low frequent colors with minimum variance quantization.

Figure 3

(A) Minimum variance quantized Fig. 2 A. (B) Color histogram of the image in A. (C) Full resolution output image resulting from the retained high frequent colors. (D) Color histogram of C.