Automatic Projector Calibration

Johnny Chung Lee - Projects - Thesis

Automatic Projector Calibration

The fundamental concept of my thesis is to: 1) Embed optical sensors into the projection surface. 2) Project a series of Gray-coded binary patterns. 3) Decode the location of the sensors for use in a projected application. This video demonstrates this idea in the form of a target screen fitting application. It goes on to demonstrate how this approach can be used in multi-projector applications such as stitching (creating a large display using tiled projection) or layering (multiple versions of content on the same area for view dependent displays). Additionally, it can be used to automatically register the orientation of 3D surfaces for augmenting the appearance of physical objects.

This technique is also useful for performing automatic touch calibration of interactive whiteboards or touch-tables.

Lee, J., Dietz, P., Aminzade, D., and Hudson, S. "Automatic Projector Calibration using Embedded Light Sensors", Proceedings of the ACM Symposium on User Interface Software and Technology, October 2004. [pdf][mov][ppt]