Inter-layer prediction method for video signal

• US 8,401,091 B2
• Filed: 01/09/2007
• Issued: 03/19/2013
• Est. Priority Date: 01/09/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jeon, Byeong Moon, Park, Seung Wook, Park, Ji Ho
• Primary Examiner(s): Flynn, Nathan
• Assistant Examiner(s): DOAN, TRANG T
• Application Number:
  US12/087,471
• Publication Number:
  US 20090175359A1
• Time in Patent Office: 2,261 Days
• Field of Search: None
• US Class Current: 375/240.29
• CPC Class Codes: H04N 19/103 Selection of coding mode or of prediction mode
• CPC Class Codes: H04N 19/105 Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• CPC Class Codes: H04N 19/159 Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
• CPC Class Codes: H04N 19/16 for a given display mode, e.g. for interlaced or progressive display mode
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/187 the unit being a scalable video layer
• CPC Class Codes: H04N 19/33 in the spatial domain
• CPC Class Codes: H04N 19/513 Processing of motion vectors
• CPC Class Codes: H04N 19/59 involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
• CPC Class Codes: H04N 19/86 involving reduction of coding artifacts, e.g. of blockiness

Abstract

In one embodiment, a method for encoding or decoding a video signal includes constructing a base layer picture in a base layer, where the base layer picture includes image sample data. The method further includes applying a de-blocking filter to the image sample data in the constructed base layer picture, and interpolating the deblocking filtered base layer picture. Each of an even field component and an odd field component in the deblocking filtered base layer picture is interpolated in a vertical and a horizontal direction. The interpolated even field component and odd field component are interleaved, and texture prediction information of a current block in an enhanced layer is obtained by using the interleaved even field component and odd field component.

Claims

1. A method for decoding a video signal with a decoding apparatus, the method comprising:

deriving, with the decoding apparatus, position information of a virtual base layer macroblock in a virtual base layer based on position information of a current macroblock in an enhanced layer;

deriving, with the decoding apparatus, position information of a base layer macroblock in a base layer based on the position information of the virtual base layer macroblock; and

predicting, with the decoding apparatus, texture information of the current macroblock in the enhanced layer by using texture information of the base layer macroblock when a block type of the base layer macrocblock corresponding to the position information of the base layer macroblock indicates the base layer macroblock is coded in intra mode,

wherein the predicting comprises;

constructing, with the decoding apparatus, a base layer picture in the base layer, the base layer picture including image sample data, the image sample data being data reconstructed by the intra mode;

applying, with the decoding apparatus, a de-blocking filter to the image sample data in the constructed base layer picture;

separating, with the decoding apparatus, the de-blocking filtered base layer picture into even field components and odd field components;

interpolating, with the decoding apparatus, each of the even field components and the odd field components in a vertical direction and a horizontal direction;

interleaving, with the decoding apparatus the interpolated even field components and odd field components; and

obtaining, with the decoding apparatus, texture prediction information of the current macroblock in the enhanced layer by using the interleaved even field components and odd field components,

wherein the base layer macroblock is a field macroblock in a MacroBlock Adaptive Frame Field frame (MBAFF frame) and the current macroblock is a frame macroblock in a MacroBlock Adaptive Frame Field frame (MBAFF frame), and

wherein the MacroBlock Adaptive Frame Field frame (MBAFF frame) is a frame including macroblocks adaptively decoded as a frame macroblock and a field macroblock.