Patent ID: 8687688

Claim:
A method for encoding or decoding a video signal, the method comprising: deriving position information of a base layer macroblock in a base layer based on position information of a virtual macroblock in a virtual base layer, the virtual macroblock corresponding to the current macroblock in the enhanced layer, wherein the base layer macroblock is a field macroblock and the current macroblock is a frame macroblock; obtaining texture prediction information of the current macroblock in the enhanced layer when a block type of the base layer macroblock corresponding to the position information of the base layer macroblock is an intra-coded macroblock type; and obtaining motion prediction information of the current macroblock in the enhanced layer when the block type of the base layer macroblock corresponding to the position information of the base layer macroblock is an inter-coded macroblock type, wherein the obtaining the texture prediction information comprises: a) constructing the frame macroblock from the field macroblock; b) separating the frame macroblock in the base layer into even and odd field components; c) interpolating each of the even and odd field components in a vertical and/or horizontal direction; d) obtaining a reference image by interleaving the interpolated even and odd field components; and e) obtaining the texture prediction information of the current macroblock in the enhanced layer by using the reference image.