Projection art installations are interactive, multimedia works that use video projection to create immersive experiences in a physical space. They often involve complex technology and can range from single-channel installations to large-scale, multi-projector spectacles.

3D projection art installation is a form of public art that utilizes advanced technology to create illusions of depth and space on flat surfaces. It often involves the use of projectors to cast images that interact with the surrounding environment, creating a dynamic and immersive experience for viewers. This art form has gained popularity in urban settings and at special events, where it can transform buildings and public spaces into interactive artworks.