The various embodiments described herein include methods, devices, and systems for generating object meshes. In some embodiments, a method includes obtaining a trained classifier, and an input observation of a 3D object. The method further includes generating a three-pole signed distance field from the input observation using the trained classifier. The method also includes generating an output mesh of the 3D object from the three-pole signed distance field; and generating a display of the 3D object from the output mesh.