Relation between partition constraint elements

A device for generating a bitstream, the device including circuitry configured to:

• determine a minimum size in luma samples of a luma leaf block resulting from quadtree splitting (MinQtSizeY);
• determine a maximum size in luma samples of a luma root block that can be split using a binary tree splitting (MaxBtSizeY);
• include information for the MinQtSizeY into the bitstream;
• and
• include a syntax element into the bitstream, wherein the MaxBtSizeY equals the MinQtSizeY left shifted according to a value of the syntax element.

A method for generating a bitstream, the method comprising:

• determining a minimum size in luma samples of a luma leaf block resulting from quadtree splitting (MinQtSizeY);
• determining a maximum size in luma samples of a luma root block that can be split using a binary tree splitting (MaxBtSizeY);
• including information for the MinQtSizeY into the bitstream;
• and
• including a syntax element into the bitstream, wherein the MaxBtSizeY equals the MinQtSizeY left shifted according to a value of the syntax element.

A method for decoding or processing a bitstream, the method comprising:

• obtaining, from the bitstream, a syntax element;
• obtaining information for a minimum size in luma samples of a luma leaf block resulting from quadtree splitting (MinQtSizeY);
• determining a maximum size in luma samples of a luma root block that can be split using a binary tree splitting (MaxBtSizeY) based on the information for the MinQtSizeY and the syntax element, wherein the MaxBtSizeY equals the MinQtSizeY left shifted according to a value of the syntax element;
• determine whether binary splitting is allowed to be applied to a picture block based on the MaxBtSizeY;
• and
• obtain a coding block of the picture block based on a result of the determining.