Patent ID: 8401091

Claim:
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.