Multi-Projector Image Correction on the GPU

Multi-projector displays require a variety of image correction techniques. Geometric distortions resulting from projecting onto non-planar display surfaces and non-linear properties of projector lenses must be corrected to produce usable images. Photometric issues such as varying luminance response between projectors and brightness discontinuities in projector overlap regions must also be corrected in a high-quality display. We show how the programmability of modern graphics hardware can be used to efficiently implement several image correction techniques for multi-projector displays.