| 摘要 |
A mosaic puzzle set has a predetermined number of pieces (45) with unique, directionally visible, identifiers and different brightness characteristics, three for grey scale and five for color, comprising average brightness(es), and direction and magnitude of brightness gradients, enabling assembly to copy any user selected target picture (30) by following a dedicated table/chart (33). An internet server (1) storing piece characteristics and accessible for target picture upload and chart download by an access code in the purchased set, divides (S11) the target picture (30) into a same number of data areas (311) as pieces, analyzes their brightness characteristics and assembles the chart (33) by provisionally assigning pieces to respective target areas (311) and exchanging them for each other when sums of respective mismatch values between pieces and respective target areas are thereby reduced (S12-S14). Alternatively, pieces are divisions of an iconic source picture or only screen images. Pieces in a humped brightness histogram, population distribution provide greater detail. A grid-form tray supports and aligns pieces during assembly. Internet (2) billing is possible. |
