US Patent 7,327,382 - Emulating Film via Electronic Capture
A method for converting a sequence of electronically captured images into a sequence of modified images for providing the appearance of images captured by a film reproduction system. The film reproduction system being includes motion picture negative film printed onto a motion picture print film that is displayed, or a reversal motion picture system in which the reversal film is displayed, or a motion picture film electro-optically scanned to standard format video by a telecine and further displayed, or a motion picture film electro-optically scanned by a scanner suitable for producing digital data intended for additional digital image manipulation. A digital master is prepared from the aforementioned film formats for electronic distribution or recording out to another film to be used as a printing master for producing distribution optical prints for theatrical projection.
Download full text patent here
System and Method for Processing Electronically Captured Images to Emulate Film Tonescale and Color