A difference engine is described that is designed to be used as low level component of a raster graphics architecture. The speed of the system (11 ns per operation) is achieved by the use of custom VLSI components for the most primitive operations. This permits the video rate reconstruction of images and other signals compressed by encoding them on various polynomial bases. The paper describes a feasibility study for its use for image reconstruction. The study shows that the system can be applied to the decompression of spline wavelet encoded images.

Eurographics Technical Report Series
8th Eurographics Workshop on Graphics Hardware, EGGH 1993

Blake, E. H., & Kuijk, F. (1993). A Difference Engine for Image Reconstruction. In Proceedings of the Eighth Eurographics Workshop on Graphics Hardware (pp. 119–132).