Coding of 360 degree videos using region adaptive smoothing

Abstract

A video processing unit and method for region adaptive smoothing. The image processing unit includes a memory and one or more processors. The one or processors are operably connected to the memory and configured to stitch together a plurality of video frames into a plurality of equirectangular mapped frames of a video. The one or processors are configured to define a top region and a bottom region for each of the equirectangular mapped frames of the video; perform a smoothing process on the top region and the bottom region for each of the equirectangular mapped frames of the video; and encode the smoothed equirectangular mapped frames of the video.

What is claimed is: 
     
         1 . A video processing unit comprising:
 a memory; and   one or more processors operably connected to the memory, the one or more processors configured to:
 use an equidistant mapping to simulate a warped plain in a fisheye lens; 
 derive a warped motion estimation; and 
 use the warped motion estimation as an additional mode for inter-prediction in a video codec.