Method, medium, and system encoding and/or decoding moving pictures by adaptively applying optimal prediction modes

• US 10,034,000 B2
• Filed: 03/13/2007
• Issued: 07/24/2018
• Est. Priority Date: 03/13/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Woo-shik, Kim, Hyun-mun, Cho, Dae-sung, Birinov, Dmitri, Kim, Dae-hee, Choi, Woong-il
• Primary Examiner(s): Hirl, Joseph P
• Assistant Examiner(s): TRUVAN, LEYNNA THANH
• Application Number:
  US11/717,208
• Publication Number:
  US 20070211797A1
• Time in Patent Office: 4,151 Days
• Field of Search: D14485, 382162, 382165, 382232, 382238, 385539, 38542602, 38542604, 38542606, 385448, 380 37, 386300, 386302, 386353, 386355, 386356, 345589, 345591, 345593, 345597, 345605, 712208
• CPC Class Codes: G06T 9/007 Transform coding, e.g. discrete cosine transform
• CPC Class Codes: H04N 19/103 Selection of coding mode or of prediction mode
• CPC Class Codes: H04N 19/109 among a plurality of temporal predictive coding modes
• CPC Class Codes: H04N 19/11 among a plurality of spatial predictive coding modes
• CPC Class Codes: H04N 19/136 Incoming video signal characteristics or properties
• CPC Class Codes: H04N 19/147 according to rate distortion criteria rate-distortion as a criterion for motion estimation H04N19/567
• CPC Class Codes: H04N 19/15 by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/186 the unit being a colour or a chrominance component
• CPC Class Codes: H04N 19/19 using optimisation based on Lagrange multipliers
• CPC Class Codes: H04N 19/50 using predictive coding H04N19/61 takes precedence
• CPC Class Codes: H04N 19/593 involving spatial prediction techniques
• CPC Class Codes: H04N 19/61 in combination with predictive coding

Abstract

A method, medium, and system encoding and/or decoding a moving picture. The moving picture encoding method may include selecting a prediction mode that is optimal for the macro blocks, which correspond to each other, of the color components of a current image based on the characteristics of a predetermined image, generating a predicted image for the current image according to the selected prediction mode, and encoding a moving picture using the predicted image. An optimal prediction mode can be adaptively applied to the macro blocks, which correspond to each other, of the color components, thereby increasing the moving picture'"'"'s encoding and decoding efficiencies.

Claims

1. A decoding apparatus, comprising:

a predicted image generation unit to obtain a prediction mode by decoding a bitstream, to obtain an intra luma prediction direction of a luma component of a current block when the obtained prediction mode is an intra prediction mode, and to obtain an intra chroma prediction direction of a chroma component corresponding to the intra luma prediction direction of the luma component of the current block according to one of a plurality of predetermined modes based on information included in the bitstream which indicates that the intra chroma prediction direction of the chroma component is identical to the intra luma prediction direction of the luma component, and to obtain a predicted block using a spatially adjacent pixel,

wherein the spatially adjacent pixel is determined according to the intra chroma prediction direction of the chroma component, and

wherein the intra chroma prediction direction of the chroma component is identical to the intra luma prediction direction of the luma component; and

a restored image generation unit to obtain residue by decoding the bitstream, and to obtain a restored image using the obtained residue and the obtained predicted block,

wherein the intra chroma prediction direction of the luma component is decoded from the bitstream at a block level.