Mode adaptive intra prediction smoothing in video coding
AssigneeTexas Instruments Incorporated
InventorMadhukar Budagavi
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Abstract
A method for decoding an encoded video bit stream in a video decoder is provided that includes decoding an intra prediction mode for a block of pixels encoded in the video bit stream, determining, based on the intra prediction mode, whether or not a smoothing filter is to be applied to reference pixel values used for intra prediction of the block, applying a smoothing filter to the reference pixel values when a result of the determining is that a smoothing filter is to be applied, and performing intra prediction according to the intra prediction mode using the smoothed reference pixel values to generate a predicted block of pixels.
Claims11
A method for decoding an encoded video bit stream in a video decoder, the method comprising:
- decoding an intra prediction mode for a block of pixels encoded in the video bit stream;
- determining, based on the intra prediction mode, whether or not a smoothing filter is to be applied to reference pixel values used for intra prediction of the block;
- applying a smoothing filter to the reference pixel values when a result of the determining is that a smoothing filter is to be applied;
- and
- performing intra prediction according to the intra prediction mode using the smoothed reference pixel values to generate a predicted block of pixels.
A video decoder apparatus comprised in a digital system, wherein the video decoder apparatus comprises:
- means for receiving an encoded video bit stream;
- means for decoding an intra prediction mode for a block of pixels encoded in the video bit stream;
- means for determining, based on the intra prediction mode, whether or not a smoothing filter is to be applied to reference pixel values used for intra prediction of the block;
- means for applying a smoothing filter to the reference pixel values when a result of the determining is that a smoothing filter is to be applied;
- and
- means for performing intra prediction according to the intra prediction mode using the smoothed reference pixel values to generate a predicted block of pixels.
A method for encoding a digital video stream in a video encoder, the method comprising:
- selecting an intra prediction mode for a block of pixels;
- determining, based on the intra prediction mode, whether or not a smoothing filter is to be applied to reference pixel values used for intra prediction of the block;
- applying a smoothing filter to the reference pixel values when a result of the determining is that a smoothing filter is to be applied;
- and
- performing intra prediction according to the intra prediction mode using the smoothed reference pixel values to generate a predicted block of pixels.
Dependencies are inferred from the claim text.