1. A method, comprising: forming a portion of an object using an additive manufacturing system based on an intended three-dimensional (3D) model of the object that is in an additive manufacturing system format; scanning the portion of the object using a tomographic scanner to obtain a scanner model of the portion of the object in a tomographic scanner format; converting the scanner model from the tomographic scanner format into the additive manufacturing system format to obtain a converted tomographic model; comparing the converted tomographic model to the intended 3D model to identify a defect of the portion of the object; and generating a modified 3D model of the object correcting the intended 3D model to address the defect of the portion of the object.