Paulbot is absolutely correct. In the cartoon Hound often stole this ability from Mirage - according to Hound's tech specs he's only meant to be able to project holographic 3 dimensional topograhic maps like Artoo Detoo in Phantom Menace when the Naboo-Gungan Alliance were planning the assault on Theed.

"Hologram gun projects 3-dimensional grid laser-light topographical maps"