Video coding
DCFirst Claim
1. A method of encoding a video signal using an encoder to form an encoded video signal, the video signal representing a sequence of pictures, the method comprising the encoder using an independent numbering scheme, to assign consecutive reference pictures in encoding order with respective sequence indicator values that differ with respect to each other by a predetermined amount independent of one or more of the number of non-reference pictures encoded between consecutive reference pictures and the number of non-coded pictures between consecutive reference pictures.
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Abstract
A method of encoding a video signal representing a sequence of pictures, the method employing both non-temporal prediction and temporal prediction, wherein the method comprises, for each picture that forms a reference picture for the temporal prediction of another picture, associating with each such picture an indicator indicating the temporal order of the reference picture in the encoded video signal relative to the other reference pictures in the encoded video signal.
13 Citations
62 Claims
- 1. A method of encoding a video signal using an encoder to form an encoded video signal, the video signal representing a sequence of pictures, the method comprising the encoder using an independent numbering scheme, to assign consecutive reference pictures in encoding order with respective sequence indicator values that differ with respect to each other by a predetermined amount independent of one or more of the number of non-reference pictures encoded between consecutive reference pictures and the number of non-coded pictures between consecutive reference pictures.
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15. A method of decoding an encoded video signal using a decoder to form a decoded video signal, the video signal representing a sequence of pictures, the method comprising:
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the decoder examining decoded reference pictures to identify a difference in respective sequence indicator values assigned to consecutively encoded reference pictures; the decoder comparing the identified difference in said sequence indicator values on the basis of an independent numbering scheme in which consecutive reference pictures in encoding order are assigned sequence indicator values that differ with respect to each other by a predetermined amount, independent of one or more of the number of non-reference pictures encoded between consecutive reference pictures, and the number of non-coded pictures between consecutive reference pictures; and the decoder detecting corruption or loss of a reference picture if said identified difference in sequence indicator values is more than said predetermined amount. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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- 31. An apparatus for encoding a video signal representing a sequence of pictures to form an encoded video signal, wherein the apparatus is configured to use an independent numbering scheme to assign consecutive reference pictures in encoding order with respective sequence indicator values that differ with respect to each other by a predetermined amount independent of one or more of the number of non-reference pictures encoded between consecutive reference pictures, and the number of non-coded pictures between consecutive reference pictures.
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46. An apparatus for decoding an encoded video signal representing a sequence of pictures to form a decoded video signal, wherein the apparatus is configured to:
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examine decoded reference pictures to identify a difference in respective sequence indicator values assigned to consecutively encoded reference pictures; compare the identified difference in sequence indicator values on the basis of an independent numbering scheme in which consecutive reference pictures in encoding order are assigned sequence indicator values that differ with respect to each other by a predetermined amount, independent of one or more of the number of non-reference pictures encoded between consecutive reference pictures, and the number of non-coded pictures between consecutive reference pictures; and detect corruption or loss of a reference picture if said identified difference in sequence indicator values is more than said predetermined amount. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification