EP 1741282 A1 20070110 - METHOD AND APPARATUS FOR VERTICALLY SCALING PIXEL DATA
Title (en)
METHOD AND APPARATUS FOR VERTICALLY SCALING PIXEL DATA
Title (de)
VERFAHREN UND VORRICHTUNG ZUR VERTIKALEN SKALIERUNG VON PIXELDATEN
Title (fr)
PROCEDE ET APPAREIL DE MISE A L'ECHELLE VERTICALE DE DONNEES PIXEL
Publication
Application
Priority
- US 2005014175 W 20050425
- US 83747404 A 20040430
Abstract (en)
[origin: WO2005112425A1] An image processing apparatus that includes a red, green and blue (RGB) color space to luminance color, blue color difference and red color difference (YCbCr) color space converter module for converting a line of pixels from the RGB color space to the YCbCr color space. The line of pixels has a first sampling rate. The image processing apparatus further comprises a chrominance decimator module coupled to the RGB to YCbCr color space converter module. The chrominance decimator module is configured to generate an intermediate representation of the line of pixels having a second sampling rate that is less than the first sampling rate. The amount of data representing the intermediate representation is less than the amount of data representing the line of pixels. The image processing apparatus further comprises a line store memory coupled to the chrominance decimator module. The line store memory is configured to store the intermediate representation. The image processing apparatus further comprises a vertical scaler module coupled to the line store memory. The vertical scaler module is configured to generate a scaled version of the intermediate representation. The image processing apparatus further comprises a chrominance interpolator module coupled to the vertical scaler module. The chrominance interpolator module is configured to convert the scaled version of the intermediate representation having the second sampling rate to a scaled version of the line of pixels having the first sampling rate. The image processing apparatus further comprises a YCbCr to RGB color space converter module coupled to the chrominance interpolator module. The YCbCr to RGB color space converter module is configured to convert the scaled version of the line of pixels from the YCbCr color space to the RGB color space.
IPC 8 full level
CPC (source: EP)
G06T 3/4007 (2013.01); G06T 3/4015 (2013.01); H04N 1/40068 (2013.01)
Citation (search report)
See references of WO 2005112425A1
Citation (examination)
US 7050065 B1 20060523 - YOUNG WAYNE D [US]
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 2005112425 A1 20051124; CN 100521728 C 20090729; CN 1965568 A 20070516; EP 1741282 A1 20070110; JP 2007535869 A 20071206; JP 2009282527 A 20091203; JP 5106483 B2 20121226; TW 200538933 A 20051201; TW I413900 B 20131101
DOCDB simple family (application)
US 2005014175 W 20050425; CN 200580018727 A 20050425; EP 05740206 A 20050425; JP 2007510867 A 20050425; JP 2009137589 A 20090608; TW 94113514 A 20050427