3d video encoding and decoding methods and apparatus

A method, comprising:

• determining, based on a frame pair comprising a first eye image and a second eye image, a first eye image shift and a second eye image shift;
• generating a scaled and cropped first eye image based on the first eye image shift;
• generating a scaled and cropped second eye image based on the second eye image shift;
• encoding the scaled and cropped first eye image to obtain an encoded first eye image;
• performing difference encoding on the scaled and cropped second eye image by referencing the scaled and cropped first eye image to obtain an encoded second eye image, wherein the encoded first eye image and the encoded second eye image comprise encoded image data.

A non-transitory computer readable medium comprising computer readable code executable by one or more processors to:

• determine, based on a frame pair comprising a first eye image and a second eye image, a first eye image shift and a second eye image shift;
• generate a scaled and cropped first eye image based on the first eye image shift;
• generate a scaled and cropped second eye image based on the second eye image shift;
• encode the scaled and cropped first eye image to obtain an encoded first eye image;
• and
• perform difference encoding on the scaled and cropped second eye image by referencing the scaled and cropped first eye image to obtain an encoded second eye image, wherein the encoded first eye image and the encoded second eye image comprise encoded image data.

A system comprising:

• one or more processors;
• and
• one or more computer readable media comprising computer readable code executable by
• the one or more processors to:
• determine, based on a frame pair comprising a first eye image and a second eye image, a first eye image shift and a second eye image shift;
• generate a scaled and cropped first eye image based on the first eye image shift;
• generate a scaled and cropped second eye image based on the second eye image shift;
• encode the scaled and cropped first eye image to obtain an encoded first eye image;
• and
• perform difference encoding on the scaled and cropped second eye image by referencing the scaled and cropped first eye image to obtain an encoded second eye image, wherein the encoded first eye image and the encoded second eye image comprise encoded image data.