Adaptive partition coding

An encoder for encoding a block of a depth map associated with a texture picture into a data stream, configured to:

• determine a texture threshold based on a statistic of sample values of a reference block of the texture picture;
• determine a contour partition of the reference block of the texture picture by comparing each sample of the reference block with the texture threshold;
• predict a contour partition of the block of the depth map based on the contour partition of the reference block such that the block of the depth map is segmented into two portions;
• and
• encode, into the data stream, the block of the depth map based on the contour partition of the block of the depth map.

A non-transitory computer-readable medium for storing data associated with a video, comprising:

• a data stream stored in the non-transitory computer-readable medium, the data stream comprising encoded information of a reference block of a texture picture of the video and encoded information of a block of a depth map, which corresponds to the texture picture, of the video, wherein the block of the depth map is decoded using a plurality of operations including:
• determining a texture threshold based on a statistic of sample values of a reference block of the texture picture;
• determining a contour partition of the reference block of the texture picture by comparing each sample of the reference block with the texture threshold;
• predicting a contour partition of the block of the depth map based on the contour partition of the reference block such that the block of the depth map is segmented into two portions;
• and
• decoding the block of the depth map based on the contour partition of the block of the depth map.