METHODS AND SYSTEMS FOR PROCESSING MULTI-LATTICED VIDEO STREAMS

• US 20090313662A1
• Filed: 06/17/2008
• Published: 12/17/2009
• Est. Priority Date: 06/17/2008
• Status: Active Grant

• Current Assignee: Tech 5 SAS
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Rodriguez, Arturo A., Shepherd, Gregory
• Granted Patent: US 8,699,578 B2
• Time in Patent Office: Days
• US Class Current: 725/87
• CPC Class Codes: H04N 19/39 involving multiple description coding [MDC], i.e. with separate layers being structured as independently decodable descriptions of input picture data
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/59 involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
• CPC Class Codes: H04N 19/66 involving data partitioning, i.e. separation of data into packets or partitions according to importance
• CPC Class Codes: H04N 19/895 in combination with error concealment

Abstract

An apparatus for facilitating reception of multiple representations of a video signal. In one embodiment, the apparatus includes a mechanism for receiving plural representations of the video signal corresponding to plural decimated versions of the video signal, associating pictures of the received plural representations of the video signal, and outputting pictures corresponding to information from associated pictures in accordance with a relative temporal order.

Claims

1. A method for receiving and outputting plural representations of a video signal in a video stream, the method comprising:

receiving a video stream, wherein the video stream includes plural representations of a video signal, wherein each of the plural representations of the video signal (PROTVS) includes a respective sequence of processed pictures, wherein each processed picture of each of the PROTVS represents a corresponding respective picture of the video signal, wherein each respective picture of the video signal is represented by at most one processed picture of each of the PROTVS, and wherein a first plurality of the processed pictures of a second representation of the video signal (SROTVS) is received in the video stream after at least a portion of a first plurality of the processed pictures of a first representation of the video signal (FROTVS);

determining plural sets of one or more associated processed pictures of the PROTVS, wherein each processed picture in each determined set of one or more associated processed pictures (DSOOOMAPP) represents the same respective picture of the video signal, wherein each respective DSOOOMAPP includes at most one received processed picture of each of the PROTVS; and

outputting plural pictures, wherein each output picture comprises of information corresponding to the processed pictures in a respective DSOOOMAPP.

2. The method of claim 1, wherein a second plurality of the processed pictures of the SROTVS is received in the video stream after at least a portion of a second plurality of the processed pictures of the FROTVS, wherein the first received picture of the second plurality of the processed pictures of the SROTVS is received after the last received picture from the first plurality of the processed pictures of the SROTVS.

3. The method of claim 2, wherein the order of receiving the processed pictures of the FROTVS and SROTVS in the video stream is in accordance with each successively received picture from the FROTVS representing respectively the same picture of the video signal as each successively received picture from the SROTVS.

4. The method of claim 3, wherein successively pictures of the second plurality of the processed pictures of the FROTVS are received in the video stream while successively receiving pictures of the first plurality of the processed pictures of the SROTVS.

5. The method of claim 4, further comprising:

receiving auxiliary information that identifies associated processed pictures of the PROTVS, wherein the determining of plural sets of one or more associated processed pictures of the PROTVS is in accordance to the received auxiliary information.

6. The method of claim 2, wherein each of the PROTVS corresponds to a respective decimated version of the video signal, and wherein each received processed picture of each of the PROTVS corresponds to a respective decimated picture of the video signal.

7. The method of claim 6, wherein the first received picture from the first plurality of the processed pictures of the SROTVS is received in the video stream after the last received picture from the first plurality of the processed pictures of the FROTVS.

8. The method of claim 7, wherein the first received picture from the first plurality of the processed pictures of the SROTVS is received in the video stream while receiving the first picture from the second plurality of the processed pictures of the FROTVS.

9. The method of claim 2, wherein the first received picture from the first plurality of the processed pictures of the SROTVS is received in the video stream prior to the first received picture from the second plurality of the processed pictures of the FROTVS.

10. The method of claim 9, wherein the first received picture from the first plurality of the processed pictures of the SROTVS is received in the video stream while receiving a picture from the first plurality of the processed pictures of the FROTVS.

11. The method of claim 2, wherein each respective DSOOOMAPP includes one received processed picture of each of the PROTVS, and wherein each output picture is assembled from information corresponding to each of the processed pictures in the respective DSOOOMAPP.

12. A method for receiving and outputting plural representations of a video signal, the method comprising:

receiving plural representations of a video signal, wherein each of the plural representations of the video signal (PROTVS) includes successive compressed pictures, wherein each of the PROTVS is associated with a respective pixel sampling lattice used to decimate each picture of the video signal, wherein each compressed picture of each of the PROTVS represents a respectively corresponding decimated picture of the video signal;

wherein each respective picture of the video signal is represented by at most one compressed picture of each of the PROTVS;

determining respective sets of one or more compressed pictures of the PROTVS that represent each picture of the video signal;

decompressing the successive compressed pictures of each of the PROTVS; and

outputting plural pictures, wherein each outputted picture includes visual information corresponding to the respective decompressed version of each of plural received compressed pictures that represent the same respective picture of the video signal.

13. The method of claim 12, further comprising:

receiving auxiliary information that identify the respective sets of one or more compressed pictures of the PROTVS that represent each picture of the video signal.

14. The method of claim 12, wherein the PROTVS are received in respective video streams.

15. The method of claim 12, wherein the PROTVS are received in a single video stream.

16. The method of claim 12, further comprising:

receiving a first compressed picture representing a first picture of the video signal; and

delaying the outputting of a picture including visual information corresponding to the decompressed version of the first compressed picture until receiving and decompressing a second compressed picture that representing the first picture of the video signal, wherein the second compressed picture is received after the first compressed picture.

17. An apparatus for receiving and outputting plural representations of a video signal in a video stream, the apparatus comprising:

a processor;

a processor-readable medium including one or more instructions for;

receiving a video stream, wherein the video stream includes plural representations of a video signal, wherein each of the plural representations of the video signal (PROTVS) includes a respective sequence of compressed pictures, wherein each of the PROTVS is associated with a respective pixel sampling lattice used to decimate each picture of the video signal, wherein each compressed picture of each of the PROTVS represents a respectively corresponding decimated picture of the video signal;

determining plural sets of one or more associated compressed pictures of the PROTVS, wherein each compressed picture in each determined set of one or more associated compressed pictures (DSOOOMACP) represents the same respective picture of the video signal, wherein each respective DSOOOMACP includes at most one received compressed picture of each of the PROTVS; and

outputting plural pictures, wherein each output picture comprises of information corresponding to the respective decompressed version of one or more received compressed pictures that represent the same respective picture of the video signal.

18. The system of claim 17, wherein each of the associated compressed pictures in a first DSOOOMACP is received over a respective interval, wherein the start of a second interval including a second associated compressed picture in the first DSOOOMACP is after the end of a first interval including a first associated compressed pictures in the first DSOOOMACP.

19. The system of claim 17, wherein a first plurality of compressed pictures is received over a first interval, wherein each of the first plurality of compressed pictures received over the first interval corresponds respectively to a different DSOOOMACP.

20. The system of claim 19, wherein a first DSOOOMACP includes a first compressed picture of the first plurality of compressed pictures received over a first interval, wherein a second compressed picture included in the first DSOOOMACP is received over a third interval, wherein the start of the third interval is after the end of a second interval, wherein the start of the second interval is after the end of the first interval.