Back to results
US 12,223,683 B2Granted
Method for encoding depth values of a set of 3D points once orthogonally projected into at least one image region of a projection plane
AssigneeInterDigital VC Holdings, Inc.
InventorsJulien Ricard, Celine Guede, Yannick Olivier, Joan Llach Pinsach
Life of this patent
Estimating the term…
Abstract
At least one embodiment relates to a method comprising encoding a projection mode associated with an image region of a first depth image, said projection mode indicating if said image region stores either the minimum or the maximum depth value of at least one orthogonally projected 3D point of the point cloud along a same projection direction; and encoding said depth minimum and maximum depth values as a function of said projection mode.
Claims21
A method comprising:
- decoding first image data storing at least one first depth value of a first 3D point of a point cloud, the first 3D point and a second 3D point being orthogonally projected onto a same 2D point of a projection plane, the at least one first depth value being one of a minimum depth value from the projection plane or a maximum depth value from the projection plane, and the second 3D point having a second depth value being the other of the minimum depth value and the maximum depth value;
- deriving from a bitstream a projection mode signaled for a patch to which the 2D point belongs, the projection mode indicating whether the at least one first depth value is the minimum depth value or the maximum depth value;
- and
- reconstructing a geometry of the point cloud based on the projection mode.
1 more element
A device comprising at least one processor configured to:
- decode first image data storing at least one first depth value of a first 3D point of a point cloud, the first 3D point and a second 3D point being orthogonally projected onto a same 2D point of a projection plane, the at least one first depth value being one of a minimum depth value from the projection plane or a maximum depth value from the projection plane, and the second 3D point having a second depth value being the other of the minimum depth value and the maximum depth value;
- derive from a bitstream a projection mode signaled for a patch to which the 2D point belongs, the projection mode indicating whether the at least one first depth value is the minimum depth value or the maximum depth value;
- and
- reconstruct a geometry of the point cloud based on the projection mode.
1 more element
A method comprising:
- encoding first image data comprising at least one first depth value of a first 3D point of a point cloud, the first 3D point and a second 3D point being orthogonally projected onto a same 2D point of a projection plane, the at least one first depth value being one of a minimum depth value from the projection plane or a maximum depth value from the projection plane, and the second 3D point having a second depth value being the other of the minimum depth value and the maximum depth value;
- and
- signaling, in a bitstream, a projection mode for a patch to which the 2D point belongs, the projection mode indicating whether the at least one first depth value is the minimum depth value or the maximum depth value.
A device comprising at least one processor configured to:
- encode first image data comprising at least one first depth value of a first 3D point of a point cloud, the first 3D point and a second 3D point being orthogonally projected onto a same 2D point of a projection plane, the at least one first depth value being one of a minimum depth value from the projection plane or a maximum depth value from the projection plane, and the second 3D point having a second depth value being the other of the minimum depth value and the maximum depth value;
- and
- signal, in a bitstream, a projection mode for a patch to which the 2D point belongs, the projection mode indicating whether the at least one first depth value is the minimum depth value or the maximum depth value.
Dependencies are inferred from the claim text.