Method and arrangement for detecting amplitude changes in the output signal of an optical sensor

Abstract

Abstract 1. A process for detecting changes in amplitude of the output signal of an optical sensor, in particular a television camera, in which - the amplitude values of the output signal are associated with brightness values of the picture received by the optical sensor, - a binary signal is produced by comparison of the output signal with a reference signal, - an upper envelope curve signal (ho ) is produced from the greatest amplitude value, - a lower envelope curve signal (hu ) is produced from the lowest amplitude value, and in which - at least one amplitude value between the upper envelope curve signal (ho ) and the lower envelope curve signal (hu ) is chosen as reference signal (Uref ) characterised in that - the reference signal (Uref ) is formed according to the equation Uref = ho + hu - Uv , where ho is the upper envelope curve signal hu is the lower envelope curve signal, and Uv is the output signal from the optical sensor (S).

Inventors

• 👤 Hans-Helmut Dipl.-Phys. Marguerre

Bibliographic Details