Flat image that can be displayed in three dimensions?

A flat image that can be displayed in three dimensions is often referred to as a 3D hologram or a stereoscopic image. These images create the illusion of depth by using techniques such as parallax, where the perspective changes based on the viewer's angle. Technologies like augmented reality (AR) and Virtual Reality (VR) can also transform flat images into immersive 3D experiences, allowing users to interact with the visual content in a more dynamic way.