# A Mixed Method with Effective Color Reduction
## 5 Conclusions
\begin{table}
\begin{tabular}{l c c c c c c c c c c c} \hline \hline  & **WU** & **OC** & **MC** & **VB** & **NQ** & **BSKM** & **WATCQ** & **KM** & **SFLA** & **ABC+ATCQ** & **ATCQ+FA** \\ \hline Lenna & 158.61 & 482.03 & 425.85 & 203.07 & 152.13 & **118.65** & 131.41 & 123.48 (4.6) & 119.98 (1.1) & 119.19 (0.5) & 139.13 (1.2) \\ Pepp. & 279.27 & 777.14 & 866.55 & 451.10 & 283.69 & 231.82 & 241.08 (239.02 (7.5) & 232.13 (2.3) & **231.06** (1.3) & 290.13 (4.3) \\ Plane & 85.45 & 342.23 & 374.70 & 123.56 & 123.70 & 65.84 & **65.63** & 140.67 (28.8) & 89.52 (7.6) & 68.05 (2.4) & 101.35 (0.5) \\ Mand. & 468.39 & 1094.11 & 984.05 & 531.03 & 456.13 & **376.69** & 405.65 & 382.70 (5.2) & 377.53 (2.8) & 377.14 (1.4) & 408.40 (1.7) \\ Blond & 107.55 & 477.64 & 374.69 & 232.43 & 123.89 & 83.92 & 90.68 & 89.56 (8.4) & 84.58 (1.9) & **82.16** (0.3) & 96.30 (4.1) \\ Lake & 249.81 & 922.04 & 1208.87 & 352.76 & 274.24 & **204.24** & 215.70 & 214.49 (7.7) & 206.89 (2.5) & 204.78 (7) & 216.94 (1.4) \\ Hydr. & 218.81 & 491.45 & 975.28 & 367.05 & 235.63 & **170.52** & 182.38 & 179.00 (4.3) & 173.76 (2.7) & 171.22 (0.90) & 209.59 (2.2) \\ EPSZ & 149.84 & 539.37 & 291.61 & 182.44 & 141.71 & **114.78** & 120.61 & 118.95 (2.6) & 115.55 (1.9) & 115.37 (1.0) & 153.18 (1.0) \\ Mach. & 98.40 & 371.64 & 185.28 & 120.22 & 96.94 & **72.73** & _77.37_ & _77.92_ (4.0) & 73.96 (1.0) & 94.38 (1.1) \\ Text & 45.51 & 104.38 & 250.51 & 60.96 & 55.06 & **34.48** & 35.96 & 40.64 (3.0) & 36.49 (1.3) & 35.46 (0.4) & 38.62 (0.1) \\ Sign & 82.07 & 308.53 & 412.77 & 113.41 & 98.36 & 61.01 & 64.92 & 69.23 (7.2) & 65.06 (3.0) & 62.41 (1.2) & 96.38 (0.9) \\ Bikes & 113.08 & 409.62 & 580.27 & 162.72 & 104.32 & **104.31** & 109.89 & 115.49 (4.4) & 170.70 (2.7) & 104.68 (1.3) & 124.01 (0.1) \\ Sail. & 85.82 & 477.06 & 320.63 & 139.41 & 118.56 & **68.19** & 70.55 & 88.38 (6.8) & 78.67 (5.3) & 69.01 (1.8) & 76.18 (0.6) \\ Moto. & 268.42 & 849.84 & 532.58 & 406.60 & 339.71 & **187.95** & 216.60 & 204.08 (8.0) & 197.09 (3.4) & 190.87 (1.8) & 232.83 (1.5) \\ Lady & 148.83 & 412.51 & 317.46 & 417.87 & 160.77 & **111.86** & 124.17 & 120.33 (5.1) & 116.32 (2.6) & 114.45 (1.2) & 141.49 (1.0) \\ Caps & 213.01 & 728.03 & 687.38 & 532.56 & 231.86 & 157.95 & 167.25 & 180.56 (10.5) & 157.16 (9.5) & 158.08 (0.1) & 225.76 (1.2) \\ Parr. & 298.98 & 853.02 & 682.83 & 357.24 & 297.98 & 236.24 & 296.12 & 253.35 (1.8) & 243.10 (5.4) & 235.00 (2.8) & 269.55 (2.1) \\ Girl & 162.03 & 508.41 & 334.74 & 222.09 & 169.25 & **124.93** & 132.37 & 144.11 (9.3) & 132.00 (3.9) & 127.86 (1.5) & 186.57 (5.7) \\ Land. & 131.31 & 576.99 & 419.37 & 164.35 & 139.03 & 98.74 & 105.55 & 103.00 (3.3) & 100.33 (1.6) & **98.42** (0.7) & 111.71 (1.4) \\ Head. & 142.63 & 430.86 & 1195.51 & 184.82 & 188.99 & **113.88** & 120.37 & 139.68 (9.1) & 121.69 (6.0) & 114.85 (1.2) & 138.24 (0.9) \\ \cline{2-11}  & 160.65 & 429.95 & 451.61 & 291.77 & 172.66 & 123.93 & 103.46 & 132.13 (8.4) & 1242.92 (3.4) & **123.12** (1.9) & 144.34 (1.5) \\ Snow. & 161.12 & 559.57 & 366.86 & 216.35 & 202.14 & 121.41 & 124.82 & 137.94 (17.0) & 126.51 (9.0) & **118.63** (2.0) & 137.95 (0.7) \\ Cath. & 81.90 & 316.46 & 284.29 & 105.84 & 93.72 & **59.24** & 63.25 & 66.76 (4.9) & 62.93 (1.7) & 60.63 (0.8) & 77.27 (0.9) \\ Beach & 177.34 & 446.43 & 671.30 & 211.50 & 178.32 & 140.87 & 145.64 & 148.69 (10.2) & 139.23 (2.3) & **138.32** (1.7) & 185.36 (3.9) \\ \hline _AVE._ & 171.09 & 540.02 & 555.22 & 224.82 & 186.60 & 132.68 & 141.33 & 146.26 & 137.42 & 133.11 & 161.94 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: MSE of other color quantization methods for palette size 32. The results of the iterative methods include the average MSE and the standard deviation (in parentheses). The best solution for each image appears in bold and the worst solution is underlined (_AVE._: average values for all the images).