1. A system for generating a three-dimensional object from three-dimensional object data, comprising: a processing system to: obtain characteristic data including one or more of a scaling factor corresponding to an ambient temperature during manufacturing, data defining an age of a build material, data defining a humidity level of a build material, data defining a particle size of a powdered build material, and data defining characteristics of a coalescing agent; perform a geometrical transformation on the three-dimensional object data based on the characteristic data to compensate for distortions introduced by the additive manufacturing system during the generation of the three-dimensional object; and generate a plurality of slice images from the transformed three-dimensional object data, each slice image defining a portion of a layer of build material where a coalescing agent is to be delivered during generation of the three-dimensional object; and a manufacturing system to generate the three dimensional object based on the slice images.