Global Patent Index - EP 2384581 A4

EP 2384581 A4 20120530 - METHOD, APPARATUS AND COMPUTER READABLE MEDIUM FOR CALCULATING RUN AND LEVEL REPRESENTATIONS OF QUANTIZED TRANSFORM COEFFICIENTS REPRESENTING PIXEL VALUES INCLUDED IN A BLOCK OF A VIDEO PICTURE

Title (en)

METHOD, APPARATUS AND COMPUTER READABLE MEDIUM FOR CALCULATING RUN AND LEVEL REPRESENTATIONS OF QUANTIZED TRANSFORM COEFFICIENTS REPRESENTING PIXEL VALUES INCLUDED IN A BLOCK OF A VIDEO PICTURE

Title (de)

VERFAHREN, VORRICHTUNG UND COMPUTERLESBARES MEDIUM ZUR BERECHNUNG VON LAUFLÄNGEN- UND LEVEL-DARSTELLUNGEN QUANTISIERTER TRANSFORMATIONSKOEFFIZIENTEN ZUR DARSTELLUNG VON PIXELWERTEN IN EINEM BLOCK EINES VIDEOBILDES

Title (fr)

PROCÉDÉ, APPAREIL ET SUPPORT LISIBLE PAR ORDINATEUR POUR CALCULER DES REPRÉSENTATIONS DE COURSE ET DE NIVEAU DE COEFFICIENTS DE TRANSFORMÉE QUANTIFIÉS REPRÉSENTANT DES VALEURS DE PIXELS COMPRISES DANS UN BLOC D'IMAGE VIDÉO

Publication

EP 2384581 A4 20120530 (EN)

Application

EP 09836441 A 20091228

Priority

  • NO 2009000447 W 20091228
  • NO 20085407 A 20081230
  • NO 20090715 A 20090213

Abstract (en)

[origin: WO2010077148A1] A process for calculating run-and-level representations of quantized transform coefficients includes packing each quantized transform coefficients in a value interval (Max, Min) by setting all quantized transform coefficients greater than Max equal to Max, and all quantized transform coefficients less than Min equal to Min; reordering the quantized transform coefficients resulting in an array C of reordered quantized transform coefficients; masking C by generating an array M containing ones in positions corresponding to positions of C having non-zero values, and zeros in positions corresponding to positions of C having zero values; and for each position containing a one in M, generating a run and a level representation by setting the level value equal to an occurring value in a corresponding position C, and setting the run value equal to the number of proceeding positions relative to a current position in M since a previous occurrence of one in M.

IPC 8 full level

H04N 7/26 (2006.01); H04N 7/30 (2006.01)

CPC (source: EP)

H04N 19/129 (2014.11); H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/60 (2014.11); H04N 19/93 (2014.11)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DOCDB simple family (publication)

WO 2010077148 A1 20100708; CN 102273204 A 20111207; CN 102273204 B 20140514; EP 2384581 A1 20111109; EP 2384581 A4 20120530; NO 20090715 L 20100701; NO 332205 B1 20120730

DOCDB simple family (application)

NO 2009000447 W 20091228; CN 200980153613 A 20091228; EP 09836441 A 20091228; NO 20090715 A 20090213