Bit allocation scheme for repetitive structure discovery based 3D model compression

An apparatus comprising a processor configured to:

• determine a second quantization parameter (QP) used for decoding patterns associated with the 3D model as a function of a first quantization parameter (QB) indicating the quality of a reconstructed 3D model, wherein the first quantization parameter is a user specified constant to indicate the requirement of the reconstructed 3D model;
• perform a decoding of a pattern in response to the second quantization parameter (QP);
• determine a third and a fourth quantization parameters (QT, QR) for the transformation information for an instance being represented as a transformation of the pattern as a function of the second quantization parameter (QP);
• and
• performing encoding or decoding of the transformation for the instance in response to the third and fourth quantization parameters (QT, QR).

A method for generating a bitstream representing a 3D model, comprising the steps of:

• determining, by an encoder, a second quantization parameter (QP) used for encoding patterns associated with the 3D model as a function of a first quantization parameter (QB) indicating the quality of a reconstructed 3D model, wherein the first quantization parameter is a user specified constant to indicate the requirement of the reconstructed 3D model;
• performing, by an encoder, an encoding of a pattern in response to the second quantization parameter (QP);
• determining, by an encoder, a third and a fourth quantization parameters (QT, QR) for the transformation information for an instance being represented as a transformation of the pattern as a function of the second quantization parameter (QP);
• and
• performing an encoding of the transformation for the instance in response to the third and fourth quantization parameters (QT, QR).

An apparatus comprising a processor configured to:

• determine a second quantization parameter (QP) used for encoding patterns associated with the 3D model as a function of a first quantization parameter (QB) indicating the quality of a reconstructed 3D model, wherein the first quantization parameter is a user specified constant to indicate the requirement of the reconstructed 3D model;
• perform an encoding of a pattern in response to the second quantization parameter (QP);
• determine a third and a fourth quantization parameters (QT, QR) for the transformation information for an instance being represented as a transformation of the pattern as a function of the second quantization parameter (QP);
• and
• performing an encoding of the transformation for the instance in response to the third and fourth quantization parameters (QT, QR).