Many people chose to celebrate the 20th Anniversary of Pokémon in their own way, such as replaying the original Pokémon Red, Blue and Yellow titles. Various websites also made tributes. One among those was the computational site WolframAlpha, from which you can make various calculations and plot your results.
How does such a site celebrate Pokémon? It did so by using mathematical terms to plot out every single Pokémon. You can view all examples here or by typing ‘Pokémon curves’ into its search bar. You can request specific Pokémon as well, e.g. ‘Ludicolo curves’.
It seems that there’s a clever script that takes an image (say the Sugimori art for the Pokémon), detects the edges of lines, then represents those lines as best it can using curves generated by mathematical terms (which understandably become very long). If you’re interested you can read more about the process here. The website does it for more than Pokémon characters as well. Not every object is well represented by these curves, but you can clearly identify each case, and some turned out pretty well.
Edited by curiousnathan.