1. An apparatus for generating mesh models of feathers, comprising: a geometrical model analyzing unit that analyzes groups of barbs included in a geometrical curve model of the feather; a calculating unit that calculates the number of grids for each of the groups of barbs by applying curve lengths of the barbs and an average curve length for the curve lengths included in each of the groups of barbs; and a mesh model generating unit that constructs a polygonal mesh model from the geometrical curve model based on the number of grids.