System for electronic image signal processing to provide a tonescale corrected full resolution luminance and two half resolution chrominance signals

摘要

A system for electronic image signal processing is described for use in a system including high speed film scanning apparatus and residual based hierarchical storage and display apparatus wherein full resolution luminance and half resolution color signals are processed to directly generate tonescale corrected full resolution scene luminance signal for image encoding without the creation of full resolution intermediate RGB images.