Patent №
US 5,255,083
Granted
1993-10-19
Filed 1991
Owner
SONY CORPORATION OF AMERICA
+1 more
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
07710704
A digital color correction system and method provide for color correction in a film-to-video signal conversion system. Film color correction is done by correcting incoming digitized film color signals (e.g. red, green and blue) according to film color correction parameters which represent film characteristics, such as film speed, gamma, and minimum and maximum film dye density. The film color correction parameters are used to sensitometrically convert the film color signals to video color signals according to a sensitometric film model, such as the Hurter-Driffield ("HD") characteristic curve. Video color correction is then performed upon the corrected film color signals according to video color correction parameters which represent video signal characteristics, such as hue and saturation, as well as a video color standard model, such as SMPTE 240M. Alternatively, separate signals representing the film or video color correction parameters can be encoded as separate data into the corrected or uncorrected color signals. This color correction or color correction parameter encoding can be done on a field-by-field, frame-by-frame or scene-by-scene basis, so that each resulting video field, frame or scene, respectively, is appropriately color corrected or contains its own specific color correction information.
AI classification
Ownership
SONY CORPORATION OF AMERICA
assignment · 57370216
SONY ELECTRONICS INC.
namechg · 65950466
Assignors
CAPITANT, PATRICE J., PERRY, VINSON R., COLLIER, DAVID C., CARLUCCI, JOHN
On an employer assignment, the assignors are typically the inventors.