Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
  • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
  • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
  • H04N13/106—Processing image signals
  • H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
  • H04N13/194—Transmission of image signals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/30—Image reproducers
  • H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes

Definitions

• DMB Digital Media Broadcasting
• a method for providing a DMB-based 3D stereoscopic image service including the steps of: a)defining, through a data service component type, that a broadcast service is a DMB service, and defining the dimension of the DMB service through a user application type; and b) assigning a reference image and 3D additional information for a serviced 3D image as different independent streams using different object descriptors.
• method for providing a DMB-based 3D stereoscopic image service including the steps of: a) defining, through a data service component type, that a broadcast service is a DMB service, and defining the dimension of the DMB service through a user application type; and b) assigning a reference image and 3D additional information for a serviced 3D image respectively as an independent stream and a dependent stream for the reference image using one object descriptor.
• the method including the steps of: a) separately recognizing and decoding a reference image stream and a 3D additional information stream using two different object de- scriptors; b) receiving a play mode from a user; c) when the received play mode is a 2D play mode, deactivating a node corresponding to 3D additional information in a scene descriptor such that only the reference image decoded in the step a) is outputted; and d) when the received play mode is a 3D play mode, converting one of the r eference image and the 3D additional image decoded in the step a) into an image having only odd-numbered line data and converting the other into an image having only even-numbered line data.
• the present invention provides users with a realistic 3D image service while
• the present invention provides a DMB-based 3D stereoscopic image service using an MPEG-4 object descriptor of a new structure that can provide users with a realistic 3D image service while maintaining compatibility to a conventional DMB system.
• Fig. 1 is a table with additional data service component types to provide a DMB service based on a DAB;
• FIG. 2 is a table illustrating a method of discriminating between a 2D DMB service and a 3D DMB service based on a user application type defined in a DAB in accordance with an embodiment of the present invention
• Fig. 3 is a table illustrating the structure of an MPEG-4 object descriptor used to describe audio/video signals in a conventional DMB service;
• Fig. 4 is a table illustrating the structure of an object descriptor for providing a
• the DMB is based on the European digital audio broadcast standards, which
• the DMB is one of mobile multimedia broadcasts with an excellent reception capability.
• Fig. 2 is a table illustrating a method of discriminating between a 2D DMB service and a 3D DMB service based on a user application type defined in a DAB in accordance with an embodiment of the present invention.
• 3D moving pictures are coded independently on the basis of the respective viewpoints, thereby outputting viewpoint- based coded streams.
• 3D moving pictures are coded on the basis of the correlation between the respective viewpoints with reference to an image at a specific time, thereby outputting viewpoint-based coded streams.
• the present invention assigns a reference image and 3D
• 3D additional information used for a digital broadcast based 3D service includes disparity data (Disparity), disparity and residual data (Disparity + Residual Data), depth information (Depth), depth and residual data (Depth + Residual Data), a full right image (Right Image (full)), a right image of half of horizontal (Right Image (Half of Horizontal)), a left image of half of vertical (Left Image (Half of Vertical)), a horizontal/vertical half image (Right Image (Quarter)).
• the residual data includes residual texture data.
• the 3D additional information includes "Left image (full)”, “Left image (half of horizontal)”, “Left image (half of vertical)”, “left image (half of vertical)”, and "Left image (quarter)”.
• the 3D format converter 62 fills even-numbered line data with garbage data and maintains only odd- numbered line data while maintaining the size of an image.
• the 3D format converter 62 fills odd- numbered line data with garbage data and maintains only even-numbered line data while maintaining the size of an image to be equal to the size of the reference image through an image expansion filtering process using actual data contained therein.
• the reference image 621 may be converted into the even-numbered data, while the 3D additional image may be converted into the odd-numbered data.
• the 2D image 610 may be created using only the decoded reference image.
• the user may adjust a stereoscopic feeling through the horizontal shift, i.e., disparity adjustment of a 3D motion image or an object in an image according to a stereoscopic feeling adjustment mode.
• the user can enjoy a stereoscopic image by adjusting the disparity of a 3D motion image according to the stereoscopic feeling adjustment mode, which is possible by horizontally shifting left and right images. Also, when the image disparity can be optionally adjusted for each object in an image, the user can enjoy an image by adjusting the image disparity on the basis of a desired object.
• Fig. 7 illustrates the structure of an object descriptor for representing a bit stream outputted from a codec using one object descriptor when 3D moving pictures are coded independently based on the viewpoints or coded based on the correlation between the respective viewpoints with reference to an image at a specific time.
• FIG. 4 illustrates the method of assigning a reference image
• FIG. 7 illustrates a method of assign a reference image and 3D additional information as an independent stream and a dependent stream by using one object descriptor.
• an elementary stream (ES) descriptor for a reference image and an elementary stream descriptor for 3D additional information are brought forth in a subordinate relationship under one object descriptor.
• the subordinate relationship can be expressed using "StreamDependanceFlag” and "dependsOn_ES_ID” of an MPEG-4 ES descriptor.
• FIG. 8 is a block diagram illustrating a decoding apparatus 80 and method for
• the decoder 81 recognizes and decodes a reference image stream and a 3D additional image stream using one object descriptor.
• the decoder 81 combines a decoded reference image and a decoded 3D additional image to generate one 3D image.
• the user can enjoy an image by adjusting the image disparity based on a desired object.
• the present invention can be similarly applied to a 3D audio service as well as a 3D stereoscopic image service.
• the methods in accordance with the embodiments of the present invention can be realized as programs and stored in a computer-readable recording medium that can execute the programs.
• Examples of the computer-readable recording medium include CD-ROM, RAM, ROM, floppy disks, hard disks, magneto-optical disks and the like.

Landscapes

• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

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• 2006
  • 2006-01-06 KR KR1020060001987A patent/KR100747550B1/ko active IP Right Grant
  • 2006-07-13 CN CNA2006800525376A patent/CN101366290A/zh active Pending
  • 2006-07-13 WO PCT/KR2006/002756 patent/WO2007066868A1/en active Application Filing
  • 2006-07-13 EP EP06769273.1A patent/EP1961238A4/de not_active Withdrawn

Non-Patent Citations (7)

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