Global Patent Index - EP 1078505 A1

EP 1078505 A1 2001-02-28 - PARAMETRIC IMAGE STITCHING

Title (en)

PARAMETRIC IMAGE STITCHING

Title (de)

PARAMETRISCHES BILDHEFTEN

Title (fr)

TRAITEMENT D'IMAGE PARAMETRIQUE POINT PAR POINT

Publication

EP 1078505 A1 (EN)

Application

EP 99934385 A

Priority

  • US 9903845 W
  • US 7556298 P

Abstract (en)

[origin: WO9943148A1] During electronic film development, convential film is scanned electronically to produce a series of views of the develing image. An early scan reveals the fast developing highlight detail, while a late scan reveals slow developing shadow detail. After development, the series of views is combined into a single image in a process called stitching. In the present invention, regression data is accumulated during development to describe a curve of density versus time of development for each pixel. After development, this regression data is used to recreate a regression curve of dentisity versus development time for each pixel. The time at which this curve crosses a density known to give optimum grain characteristics, called the optimum density curve, is used to create the brightness for that pixel in the finished stitched image. The invention further teaches weighting regression data as a function of time and density generally following proximity to optitum density curve.

IPC 1-7 (main, further and additional classification)

H04N 1/00; H04N 1/40

IPC 8 full level (invention and additional information)

H04N 1/00 (2006.01); H04N 1/40 (2006.01); H04N 1/12 (2006.01)

CPC (invention and additional information)

H04N 1/40 (2013.01); H04N 1/00795 (2013.01); H04N 1/12 (2013.01); H04N 2201/0408 (2013.01)

Citation (search report)

See references of WO 9943148A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9943148 A1 19990826; AU 3306999 A 19990906; EP 1078505 A1 20010228; TW 384416 B 20000311

INPADOC legal status


2002-08-14 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020131

2001-09-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010720

2001-02-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000922

2001-02-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE