Look-alikes · Mauritania · Tunisia
Mauritania vs Tunisia
Two copies of one picture score 0. Mauritania and Tunisia score 157.7, and the app files them together as Star & Crescent.
Where the difference is
Each colour on Mauritania, matched with the nearest colour on Tunisia, and how far apart the two are — the number is the worst single tile, out of 255.
- #00a95c#e70013231
- #d01c1f#ffffff227
- #ffd700only on Mauritania
How they are put together
Nothing about how they are built was measured the same on both.
Only Mauritania: horizontal bands. Only Tunisia: a single-coloured ground, a disc.
How the number was arrived at
Both flags are drawn at 64×48 and cut into squares 8 across. Each square is averaged to one colour, and the score is the worst single square — so two flags that agree everywhere except one corner are as far apart as that corner, which is the right answer to a question about whether anybody could tell them apart. 0 is the same picture; the number is the worst single tile, out of 255.
What it cannot see. Both are stretched to the same box, so the shape of the flag and how wide it is flown are gone — that is why Indonesia and Monaco, which differ in nothing else, are not measured as identical but as their reds. And a square is an eighth of the flag across, so a coat of arms, a star or a line of writing is averaged into the field behind it rather than counted as a difference.
Also close
The flags the pipeline measured nearest to these two.