Automated color control in film-to-digital transfer

Details Automated color control in film-to-digital transfer Automated color control in film-to-digital transfer

2006-06-27

2006-06-27

Wu, Jingge (Department: 2625)

Image analysis

Color image processing

C382S167000, C348S096000, C358S522000

Reexamination Certificate

active

07068838

ABSTRACT:
A system and method for automatically adjusting color parameters during a film-to-digital transfer. An operator uses standard telecine equipment to preview scenes in order to determine a natural clustering of fields or scenes. Each cluster is processed separately. All the fields in a cluster are treated as one unit in the sense that color adjustments for the cluster are based on the cluster color histogram, which is computed by aggregating the colors from all pixels in the cluster. Constraints are specified for the cluster. Variables of a constraint may be automatically specified or determined by an operator based on observing sample frames from the cluster. In addition, the operator can nullify a constraint if desired. Within each cluster, the system adjusts red, green and blue intensities of the digitizing device, gains for each of these color channels, and other parameters. The system first determines which settings respect the constraints and then optimizes the solution. The solution is optimized such that the digital color distribution is as faithful as possible to the film color distribution subject to the constraints. This is achieved by adjusting the settings to maximize the entropy of the empirical, digital color histogram among all settings respecting the constraints.

REFERENCES:
patent: 4685071 (1987-08-01), Lee
patent: 4955067 (1990-09-01), Shimura
patent: 5113367 (1992-05-01), Marrian et al.
patent: 5175804 (1992-12-01), Wittmann
patent: 5943090 (1999-08-01), Eiberger et al.
patent: 5987155 (1999-11-01), Dunn et al.
patent: 6262810 (2001-07-01), Bloomer
patent: 6636648 (2003-10-01), Loui et al.
patent: 6728428 (2004-04-01), Kinjo
patent: 6744848 (2004-06-01), Stanton et al.
patent: 6791712 (2004-09-01), Gerrits
patent: 2002/0118883 (2002-08-01), Bhatt
Trahanias et al. (“Color Image Enhancement through 3-D Histogram Equalizaiton,” Proc. 11th IAPR Int'l Conf., vol. 3, Aug. 30-Sep. 3, 1992, pp. 545-548).
Rosenfeld et al., Digital Image Processing, 2nded., vol. 1, 1982, pp. 231-237.
Trahanias et al. (“Color Image Enhancement through 3-D Histogram Equalization,” Proc. 11th IAPR Int'l Conf., vol. 3, Aug. 30-Sep. 3, 1992, pp. 545-548)—Previously provided.

Affiliated with

Also associated with

Rating

Automated color control in film-to-digital transfer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automated color control in film-to-digital transfer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automated color control in film-to-digital transfer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3615474