Research Article
An Effective Color Quantization Method Using Octree-Based Self-Organizing Maps
Table 1
Information on test images.
| Image | Resolution | Number of colors | Color difference |
| (a) Lenna | 512 × 512 | 148,279 | 97.60 | (b) Parrots | 768 × 512 | 72,079 | 126.36 | (c) Mona Lisa | 1280 × 1920 | 125,240 | 97.14 | (d) House | 1280 × 1024 | 363,724 | 136.87 | (e) Mandrill | 512 × 512 | 230,427 | 118.48 | (f) Venus | 1848 × 1173 | 396,799 | 131.67 | (g) Bedroom | 1280 × 1024 | 454,673 | 136.26 | (h) Scream | 999 × 1362 | 189,162 | 108.71 | (i) Old man | 321 × 481 | 33,411 | 107.84 | (j) Dragonfly | 481 × 321 | 41,117 | 72.24 |
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