Global Patent Index - EP 0972402 A1

EP 0972402 A1 2000-01-19 - COLOUR LEGALISATION

Title (en)

COLOUR LEGALISATION

Title (de)

FARBTONLEGALISIERUNG

Title (fr)

"LEGALISATION" DE COULEURS

Publication

EP 0972402 A1 (EN)

Application

EP 98913962 A

Priority

  • GB 9800977 W
  • GB 9706640 A

Abstract (en)

[origin: WO9844722A1] In video signal processing, a colour legalisation process replaces an illegal input colour by an output colour derived by determining the intersection with the cube of legal RGB of a straight line extending between the input colour and a reference colour. The reference colour may be mid-grey or may more generally lie on a reference line extending between reference black and reference white. The position of the reference colour on this line may depend on the input colour.

IPC 1-7

H04N 1/60; H04N 9/67

IPC 8 full level

G06T 1/00 (2006.01); H04N 1/46 (2006.01); H04N 1/60 (2006.01); H04N 9/64 (2006.01); H04N 9/67 (2006.01)

CPC

H04N 9/67 (2013.01); H04N 1/6058 (2013.01)

Citation (search report)

See references of WO 9844722A1

DCS

BE DE FR GB IE IT NL

DOCDB simple family

WO 9844722 A1 19981008; AU 6847598 A 19981022; EP 0972402 A1 20000119; GB 9706640 D0 19970521; JP 2001518248 A 20011009