Title:
LOW COMPLEXITY TRANSFORM CODING USING ADAPTIVE DCT/DST FOR INTRA-PREDICTION
Document Type and Number:
WIPO Patent Application WO/2012/033373
Kind Code:
A2
Abstract:
A method and apparatus encode and decode video by determining whether to use discrete cosine transform (DCT) and DST for each of the horizontal and vertical transforms. During encoding, an intra-prediction is performed based on an intra-prediction mode determined for an MxN input image block to obtain an MxN intra-prediction residue matrix (E). Based on the intra-prediction mode, each of a horizontal transform and a vertical transform is performed using one of DCT and DST according to the intra-prediction mode. During decoding, the intra-prediction mode is determined from an incoming video bitstream. The MxN transformed coefficient matrix of the error residue is obtained from the video bitstream using an inverse quantizer. Based on the intra prediction mode, one of DCT and DST is performed for each of an inverse vertical transform and an inverse horizontal transform.
Inventors:
SAXENA ANKUR (US)
FERNANDES FELIX CARLOS (US)
FERNANDES FELIX CARLOS (US)
Application Number:
PCT/KR2011/006680
Publication Date:
March 15, 2012
Filing Date:
September 08, 2011
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04N7/30; H04N19/593
Foreign References:
| US20090238271A1 | 2009-09-24 | |||
| US20070276893A1 | 2007-11-29 | |||
| KR20100038060A | 2010-04-12 |
Other References:
See references of EP 2614648A4
Attorney, Agent or Firm:
KWON, Hyuk-Rok (1-96 Sinmun-ro 2gaJongro-ku, Seoul 110-062, KR)
Download PDF:
Claims:
Previous Patent: PATIENT APRON
Next Patent: SULPHONATE PRECURSOR HAVING A 1,2,3-TRIAZOLIUM SALT, A PRODUCTION METHOD THEREFOR AND AN INTRAMOLECU...
Next Patent: SULPHONATE PRECURSOR HAVING A 1,2,3-TRIAZOLIUM SALT, A PRODUCTION METHOD THEREFOR AND AN INTRAMOLECU...