Method and apparatus for encoding and decoding multi-view image

1. A method of encoding a multi-view image, the method comprising:

compressing a multi-view image based on a reference image relative to multiple views;

generating enabled stereo pair information in relation to the multi-view image; and

generating a bitstream using the compressed multi-view image and the enabled stereo pair information.

2. The method of claim 1 , wherein the generating enabled stereo pair information comprises:

setting a pair-set that enables stereo pairs according to a view array;

generating an enabled stereo pair table based on the set pair-set;

generating a syntax describing the enabled stereo pair information based on the enabled stereo pair table; and

recording the syntax describing the enabled stereo pair information in a user-defined message.

3. The method of claim 2 , wherein the syntax describing the enabled stereo pair information is included in a supplemental enhancement information (SEI) message of a multi-view image compression standard.

4. The method of claim 2 , wherein in the setting the pair-set, a flag value indicating whether the enabled stereo pair can be formed is set.

5. The method of claim 2 , further comprising generating semantic information describing the enabled stereo pair information.

6. A method of decoding a multi-view image, the method comprising:

extracting compression data and a user-defined information message from a bitstream;

decoding a multi-view image from the compression data, and extracting enabled stereo pair information from the user-defined information message; and

selecting a view image corresponding to the extracted enabled stereo view pair, and decoding the selected stereo views.

7. The method of claim 6 , wherein the user-defined information message is a supplemental enhancement information (SEI) message.

8. The method of claim 6 , wherein in the extracting the enabled stereo pair information, a syntax describing the enabled stereo pair information is extracted from the SEI message.

9. The method of claim 6 , wherein in the selecting the view image, a view-pair enabled stereo views is selected with reference to an enabled stereo pair table which is generated in advance.

10. A method of displaying a multi-view image, the method comprising:

determining whether a display mode is a stereo view display mode;

extracting a user-defined message from a received bitstream if the display mode is the stereo view mode;

detecting information on a pair-set that enables stereo pairs from the user-defined message;

setting a stereo image from the information on the pair-set that enables stereo pairs; and

decoding the stereo image of the pair-set according to a multi-view decoding algorithm, and displaying the decoded stereo view.

11. The method of claim 10 , further comprising displaying the information on the pair-set that enables the stereo pairs.

12. The method of claim 10 , wherein the user-defined message is a supplemental enhancement information (SEI) message in a network abstraction layer (NAL) header.

13. The method of claim 10 , wherein in the decoding the stereo image, an image of a view is decoded according to the multi-view decoding algorithm with reference to the information on the pair-set that enables the stereo pairs.

14. A method of encoding and decoding a multi-view image, the method comprising:

compressing a multi-view image based on a reference image relative to multiple views;

generating enabled stereo pair information in relation to the multi-view images;

generating a bitstream by encoding the compressed multi-view image and the enabled stereo pair information;

extracting compression data and a user-defined information message from the bitstream;

decoding the multi-view image from the compression data, and extracting the enabled stereo pair information from the user-defined information message; and

selecting a view image corresponding to the extracted enabled stereo pair information, and displaying the selected view image.

15. The method of claim 14 , wherein the stereo pair information is included in a supplemental enhancement information (SEI) message of a network abstraction layer (NAL) unit.

16. An apparatus for encoding a multi-view image, the apparatus comprising:

a signal encoder unit which compresses a multi-view image by using a multi-view compression algorithm, and encodes the compressed multi-view image signal;

a supplemental enhancement information (SEI) message generation unit which generates enabled stereo pair information of the multi-view image, and generates syntax of an SEI message which describes the enabled stereo pair information; and

a bitstream generation unit which generates a bitstream using the multi-view image encoded in the signal encoder unit and the enabled stereo pair information generated in the SEI message generation unit.

17. The apparatus of claim 16 , wherein the SEI message generation unit has an enabled stereo pair table which describes an enabled stereo pair-set according to a view array.

18. The apparatus of claim 16 , wherein an enabled stereo pair table has flag values which indicates whether stereo pairs can be formed.

19. An apparatus for decoding a multi-view image, the apparatus comprising:

a bitstream interpretation unit which separates a network abstraction layer (NAL)header part and a data part from a bitstream;

a supplemental enhancement information (SEI) extraction unit which extracts an SEI message from the NAL header part separated by the bitstream interpretation unit;

a signal decoder unit which decodes a multi-view image signal related to a selected view, by using a multi-view signal decoding method; and

a control unit which detects enabled stereo pair information in relation to multi-view images from the SEI message extracted by the SEI extraction unit, and provides a view selection signal which corresponds to the stereo pair information to the signal decoder unit.

20. The apparatus of claim 19 , wherein the enabled stereo pair information is an enabled stereo pair table which describes an enabled stereo pair-set according to a view array.

21. The apparatus of claim 19 , further comprising a display unit which displays the multi-view image signal related to the selected view decoded by the signal decoder unit.

22. A non-transitory computer readable recording medium having embodied thereon a computer program for executing a method of encoding a multi-view image, wherein the method comprises:

compressing a multi-view image based on a reference image relative to multiple views;

generating enabled stereo pair information in relation to the multi-view image; and

generating a bitstream by encoding the compressed multi-view image and the enabled stereo pair information.