Clinical Image Subtraction Using Liquid Crystal Light Valves (LCLVs)
William A. Airth-Kindree, Preston L. Ransom, Arthur B. Baskin · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1983
This paper describes a device capable of image processing, including subtraction using LCLV's and discusses its feasibilty as a clinical image processor. Intensity subtraction may be accomplished by the superimposition of two image; one a negative, and one a positive. The negative and positive images necessary for subtraction are produced by the LCLVs . It is also possible to perform " color subtraction " in which the difference image is represented as a pseudo-color distribution. Other image " operators " and their applications are discussed.