Method and apparatus for video coding

Abstract

A method and apparatus of partitioning a picture into CTUs are disclosed. An original partition scheme is applied to the current picture by tiling the original set of CTUs starting from a specific corner position of the current picture along a first axis and a second axis. If the width or the height of the current picture is not a multiple of a CTU size, extended regions are added along the first axis or the second axis away from the specific corner to form an extended picture having dimensions that is multiples of the CTU size. A target orientation for converting the current picture to an oriented picture is determined. A corresponding specific corner position of the oriented picture and a corresponding first axis and a corresponding second axis are determined according to the target orientation for partitioning the oriented picture in a same manner as the original picture.

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