Patent ID: 11949878
Assignee: DOLBY LABORATORIES LICENSING CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 10:
11. A non-transitory computer-readable medium storing instructions that, upon execution by one or more processors, cause the one or more processors to perform operations comprising:
receiving an uncoded picture;
encoding, by one or more processors, the uncoded picture into a bitstream as a first coded picture,
wherein the first coded picture comprises a plurality of coded tree blocks (CTBs),
wherein the first coded picture is segmented into at least two columns and at least two slices,
wherein each CTB belongs to both a respective column and a respective slice,
wherein a slice boundary in the first coded picture is not equal to a column boundary in the first coded picture and wherein a first slice of the at least two slices spans multiple columns, and
wherein encoding the uncoded picture is performed using multiple columns and multiple slices, and wherein encoding the uncoded picture comprises:
for a slice of the multiple slices, encoding the CTBs in the slice in an order that is based on the respective columns to which the CTBs in the slice belong, and
breaking in-loop filtering within the first slice at a column boundary between adjacent columns of the multiple columns;

encoding, by the one or more processors and in a first picture parameter set in the bitstream, a value for a number of columns N minus one for the first coded picture of the bitstream; and
encoding, by the one or more processors and in the first picture parameter set in the bitstream, a signal indicating whether the column widths pertaining to leftmost N−1 columns of the first coded picture are equal,
wherein, when the signal indicates that the column widths pertaining to the leftmost N−1 columns of the first coded picture are equal, a column width of the rightmost column of the first coded picture is different from a column width of a leftmost column of the first coded picture.