Externally enhanced prediction for video coding
AssigneeInterDigital CE Patent Holdings, SAS
InventorsFabrice Le Leannec, Philippe Bordes, Franck Galpin, Antoine Robert
Life of this patent
Estimating the term…
Abstract
A video coding system for an image of a video representative of a virtual environment comprises an encoder and a decoder that perform a reconstruction of a differential picture based on a decoded picture buffer, wherein the decoded picture buffer comprises a least a picture based on a reference differential picture and on a second picture generated by a three-dimensional renderer based on the information representative of the virtual environment. An encoding method and a decoding method are described and comprise adding the reconstructed differential picture is to the second picture.
Claims17
1-21. (canceled)
A method for decoding comprising:
- obtaining information representative of a three-dimensional (3D) environment for a current picture of an encoded video;
- obtaining a second picture corresponding to a representation of the current picture, the second picture being generated by a 3D renderer based on the information representative of the 3D environment;
- reconstructing a current differential picture based on a decoded picture buffer, wherein the decoded picture buffer comprises a least a picture based on a reference differential picture and on the second picture;
- and
- providing the reconstructed picture by adding the current differential picture to the second picture.
A method for encoding comprising:
- obtaining information representative of a three-dimensional (3D) environment for a current picture of a video to be encoded;
- obtaining a second picture corresponding to a representation of the current picture, the second picture being generated by a 3D renderer based on the information representative of the 3D environment;
- computing a current differential picture based on the current picture and the second picture;
- computing a reference picture based on a reference differential picture and on the second picture;
- adding the reference picture to a decoded picture buffer;
- and
- encoding the current differential picture based on the decoded picture buffer.
An apparatus for decoding comprising:
- a three dimensional (3D) renderer configured to generate the second picture based on the information representative of the 3D environment;
- and
- a decoder being configured to:
- obtain information representative of a 3D environment for a current picture of an encoded video;
- obtain from a 3D renderer a second picture corresponding to a representation of the current picture;
- reconstruct a current differential picture based on a decoded picture buffer, wherein the decoded picture buffer comprises a least a picture based on a reference differential picture and on the second picture;
- and
- provide the reconstructed picture by adding the current differential picture to the second picture.
An apparatus for encoding comprising:
- a three-dimensional (3D) renderer configured to generate the second image based on the information representative of the 3D environment;
- and
- an encoder being configured to:
- obtain information representative of a 3D environment for a current picture of a video to be encoded;
- obtain from a 3D renderer a second picture corresponding to a representation of the current picture;
- compute a current differential picture based on the current picture and the second picture;
- compute a reference picture based on a reference differential picture and on the second picture;
- add the reference picture to a decoded picture buffer;
- and
- encode the current differential picture based on the decoded picture buffer.
Dependencies are inferred from the claim text.