Inter-layer prediction method for video signal
First Claim
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1. 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.
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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.
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9 Claims
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1. A method for encoding or decoding a video signal, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification