Method for scalably encoding and decoding video signal
OwnerSeung Park, Ji Park +1inventors
InventorsSeung Park, Ji Park, Byeong Jeon
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Abstract
Disclosed is a method for scalably encoding and decoding a video signal. The video signal is encoded through an inter-layer prediction scheme based on a data stream of a base layer encoded with ×¼ resolution. The inter-layer prediction scheme applied between the enhanced layer and the base layer representing ×4 resolution difference includes a motion prediction scheme for predicting motion and dividing a macro block of the enhanced layer based on division information, mode information, and/or mode information of a block of the base layer. Thus, the inter-layer prediction scheme is applied between layers representing ×4 resolution difference, thereby improving a coding efficiency.
Claims9
A method for encoding a video signal, the method comprising the steps of:
- generating a bit stream of a second layer by encoding the video signal through a predetermined scheme;
- and
- generating a bit stream of a first layer by scalably encoding the video signal based on the bit stream of the second layer,
- wherein the bit stream of the second layer has a frame image size corresponding to a quarter a frame image size of the bit stream of the first layer.
A method for decoding an encoded video bit stream, the method comprising the steps of:
- decoding a bit stream of a second layer encoded through a predetermined scheme;
- and
- decoding a bit stream of a first layer scalably encoded using decoding information from the bit stream of the second layer,
- wherein the bit stream of the second layer has a frame image size corresponding to a quarter a frame image size of the bit stream of the first layer.
Dependencies are inferred from the claim text.