Patent ID: 11943461
Assignee: OP SOLUTIONS, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A decoder configured to:
receive a bitstream including information for determining a scaling constant, a signal indicating that a mode when a reference picture and a current picture have different resolutions is enabled, a coded reference picture having a first resolution, and a coded current picture having a second resolution different than the first resolution and including a coded first block and a coded second block;
when the signal indicates that the mode when a reference picture and a current picture have different resolutions is enabled:
determine, using the information in the bitstream, a scaling constant associated with the first block fo the current picture;
determine a scaled prediction block by altering the resolution of a block of the reference picture using the scaling constant and using a resolution changing filter determined individually for the block of the reference picture and not determined for the whole reference picture;
reconstruct pixel data of the first block using the scaled prediction block; and
reconstruct the second block without using a scaled prediction block of a reference picture.