Distributed video decoder and distributed video decoding method
First Claim
1. A distributed video decoder, comprising:
- a key picture decoding unit which reconstructs a key picture received from an encoder;
a hash information selecting unit which determines necessary hash information using the reconstructed key picture and/or generated previous side information; and
a side information generating unit which generates side information using the reconstructed key picture and/or hash information selected based on information determined by the hash information selecting unit.
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Abstract
A distributed video decoder and a distributed video decoding method are provided. The distributed video decoder includes a key picture decoding unit which reconstructs a key picture received from an encoder, a hash information selecting unit which determines necessary hash information using the reconstructed key picture and/or generated previous side information, and a side information generating unit which generates side information using the reconstructed key picture and/or hash information selected based on information determined by the hash information selecting unit. The distributed video decoder further includes a channel code decoding unit which estimates a quantized value by using a parity bit received from the encoder and the generated side information, and a video reconstructing unit which reconstructs a current picture as a decoding target by using the quantized value estimated by the channel code decoding unit and the generated side information.
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Citations
26 Claims
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1. A distributed video decoder, comprising:
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a key picture decoding unit which reconstructs a key picture received from an encoder; a hash information selecting unit which determines necessary hash information using the reconstructed key picture and/or generated previous side information; and a side information generating unit which generates side information using the reconstructed key picture and/or hash information selected based on information determined by the hash information selecting unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A distributed video decoder, comprising:
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a frame buffer which stores reconstructed key pictures reconstructed from key pictures received from an encoder; and a decoding unit which selectively requests the encoder to transmit hash information with respect to side information which is determined as a noise is difficult to be removed by using a parity received from the encoder. - View Dependent Claims (15)
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16. A distributed video encoder, comprising:
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a key picture decoding unit which reconstructs a key picture received from an encoder; a side information generating unit which generates side information using the reconstructed key picture; a channel code decoding unit which estimates a quantized value by using a parity bit received from the encoder and the generated side information; an intra coding selecting unit which estimates an amount of a noise included in the generated side information and selects side information or a coding unit within side information which is estimated having a lot of noise; and a video reconstructing unit which reconstructs a current picture as a decoding target by using the quantized value estimated by the channel code decoding unit and the side information.
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17. A distributed video encoder, comprising:
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a key picture decoding unit which reconstructs a key picture received from an encoder; a side information generating unit which generates side information using the reconstructed key picture; a parity request skip selecting unit which determines an image quality of the generated side information; a channel code decoding unit which skips a parity bit request to the encoder and estimates a quantized value by using the side information when it is determined the image quality of the generated side information is better than a predetermined criterion; and a video reconstructing unit which reconstructs a current picture as a decoding target by using the quantized value estimated by the channel code decoding unit and the side information.
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18. A distributed video decoding method, comprising:
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reconstructing a key picture received from an encoder; determining necessary hash information using the reconstructed key picture and/or generated previous side information; and generating side information using the reconstructed key picture and/or the determined hash information. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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Specification