Inter-layer prediction method for video signal

• US 9,497,453 B2
• Filed: 02/12/2014
• Issued: 11/15/2016
• Est. Priority Date: 01/09/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Seung Wook, Jeon, Byeong Moon, Park, Ji Ho
• Primary Examiner(s): Anyikire, Chikaodili E
• Assistant Examiner(s): ABIMBOLA, KEHINDE
• Application Number:
  US14/178,751
• Publication Number:
  US 20140161190A1
• Time in Patent Office: 1,007 Days
• US Class Current: 1/1
• 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

The present invention relates to a method for using interlaced video signal of a base layer in interlayer texture prediction. The present method separates interaced video signal of a base layer into even-field and odd-field components, interpolates the even-field and the odd-field components respectively in vertical and/or horizontal direction, and constructs a combined video data by interleaving the interpolated even-field and odd-field components.

Claims

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

deriving, with the decoding apparatus, position information of a reference block in a base layer based on position information of a virtual reference block in a virtual base layer, the virtual reference block corresponding to the current block in an enhanced layer, wherein the reference block is a field block and the current block is a frame block;

obtaining, with the decoding apparatus, texture prediction information of the current block in the enhanced layer when the reference block corresponding to the position information of the reference block is an intra-coded block; and

obtaining, with the decoding apparatus, motion prediction information of the current block in the enhanced layer when the reference block corresponding to the position information of the reference block is an inter-coded block, wherein the motion prediction information of the current block in the enhanced layer includes a motion vector and a reference index,

wherein obtaining the texture prediction information comprises;

a) constructing, with the decoding apparatus, a base layer picture in the base layer, the base layer picture including the reference block;

b) applying, with the decoding apparatus, a de-blocking filter to the base layer picture;

c) interpolating, with the decoding apparatus, each of even and odd field components of the de-blocking filtered base layer picture in a vertical direction and a horizontal direction;

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

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

wherein obtaining the motion prediction information comprises;

obtaining, with the decoding apparatus, a vertical component of the motion vector of the current block in the enhanced layer by multiplying a vertical component of a motion vector of the reference block by two; and

obtaining, with the decoding apparatus, the reference index of the current block in the enhanced layer by multiplying a reference index of the reference block by two.

2. The method according to claim 1, wherein the de-blocking filter is applied to a reconstructed sample of the intra-coded block included in the base layer picture.

3. The method according to claim 1, wherein the current block is included in a MacroBlock Adaptive Frame Field frame (MBAFF frame), the MacroBlock Adaptive Frame Field frame (MBAFF frame) being a frame adaptively including frame blocks and field blocks.

4. The method according to claim 1, wherein the base layer picture is a MacroBlock Adaptive Frame Field frame (MBAFF frame), the MacroBlock Adaptive Frame Field frame (MBAFF frame) being a frame adaptively including frame blocks and field blocks.