1. A three-dimensional-picture-generating apparatus for generating a three-dimensional picture by pasting texture pictures on a three-dimensionally-shaped model, comprising: means for selecting a picture with a highest resolution among a plurality of pictures obtained as a result of photographing an object of measurement from different camera points of view for each of a plurality of patch surfaces composing a three-dimensional picture; and means for carrying out texture mapping by applying said selected pictures to said respective patch surfaces as texture pictures.