Motion vector difference coding technique for video coding
First Claim
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1. A method of decoding video data, the method comprising:
- receiving an encoded block of video data;
receiving one or more syntax elements indicating a motion vector difference (MVD) associated with the encoded block of video data;
determining an MVD coding technique from two or more MVD coding techniques based on a difference between a picture order count (POC) value of a reference frame and a POC value of a current picture and based on a motion vector precision;
decoding the one or more syntax elements indicating the MVD using the determined MVD coding technique; and
decoding the encoded block of video data using the decoded MVD.
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Abstract
Coding a motion vector difference (MVD) during an inter-prediction process. Example techniques may include determining a particular coding and/or signaling method for an MVD from among two or more MVD coding and/or signaling techniques. A video coder (e.g., a video encoder and/or a video decoder) may determine a particular MVD coding and/or signaling technique based on characteristics of video data or coding methods, including MV precision, Picture Order Count (POC) difference, or any other already coded/decoded information of a block of video data.
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Citations
34 Claims
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1. A method of decoding video data, the method comprising:
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receiving an encoded block of video data; receiving one or more syntax elements indicating a motion vector difference (MVD) associated with the encoded block of video data; determining an MVD coding technique from two or more MVD coding techniques based on a difference between a picture order count (POC) value of a reference frame and a POC value of a current picture and based on a motion vector precision; decoding the one or more syntax elements indicating the MVD using the determined MVD coding technique; and decoding the encoded block of video data using the decoded MVD. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus configured to decode video data, the apparatus comprising:
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a memory configured to store an encoded block of video data; and one or more processors configured to; receive the encoded block of video data; receive one or more syntax elements indicating a motion vector difference (MVD) associated with the encoded block of video data; determine an MVD coding technique from two or more MVD coding techniques based on a difference between a picture order count (POC) value of a reference frame and a POC value of a current picture and based on a motion vector precision; decode the one or more syntax elements indicating the MVD using the determined MVD coding technique; and decode the encoded block of video data using the decoded MVD. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An apparatus configured to decode video data, the apparatus comprising:
- means for receiving an encoded block of video data;
means for receiving one or more syntax elements indicating a motion vector difference (MVD) associated with the encoded block of video data; means for determining an MVD coding technique from two or more MVD coding techniques based on a difference between a picture order count (POC) value of a reference frame and a POC value of a current picture and based on a motion vector precision; means for decoding the one or more syntax elements indicating the MVD using the determined MVD coding technique; and means for decoding the encoded block of video data using the decoded MVD.
- means for receiving an encoded block of video data;
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23. A non-transitory computer-readable storage medium storing instructions that, when executed, causes one or more processors of a device configured to decode video data to:
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receive the encoded block of video data; receive one or more syntax elements indicating a motion vector difference (MVD) associated with the encoded block of video data; determine an MVD coding technique from two or more MVD coding techniques based on a difference between a picture order count (POC) value of a reference frame and a POC value of a current picture and based on a motion vector precision; decode the one or more syntax elements indicating the MVD using the determined MVD coding technique; and decode the encoded block of video data using the decoded MVD.
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24. A method of encoding video data, the method comprising:
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encoding a block of video data according to an inter-prediction mode; determining a motion vector difference (MVD) associated with the block of video data; determining an MVD coding technique from two or more MVD coding techniques based on a difference between a picture order count (POC) value of a reference frame and a POC value of a current picture and based on a motion vector precision; and encoding one or more syntax elements indicating the MVD using the determined MVD coding technique. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. An apparatus configured to encode video data, the apparatus comprising:
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a memory configured to store a block of video data; and one or more processors configured to; encode the block of video data according to an inter-prediction mode; determine a motion vector difference (MVD) associated with the block of video data; determine an MVD coding technique from two or more MVD coding techniques based on a difference between a picture order count (POC) value of a reference frame and a POC value of a current picture and based on a motion vector precision; and encode one or more syntax elements indicating the MVD using the determined MVD coding technique. - View Dependent Claims (34)
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Specification