Image decoding method, image coding method, image decoding apparatus, and image coding apparatus

摘要

To provide an image decoding method allowing decoding of a multiview video even when no prefix NAL units are used. The image decoding method includes: parsing NAL units of a base view; decoding an image of the base view; parsing MVC extension parameters of a non-base view; searching whether or not prefix NAL units for a base view are present; either computing MVC extension parameters for the base view when no prefix NAL units are present or parsing the MVC extension parameters of the base view when prefix NAL units for the base view are present; and decoding the non-base view using the MVC extension parameters of the base view and the MVC extension parameters of the non-base view.

主权项

1. An image coding method of coding a multiview video, the image coding method comprising:
determining NAL unit header MVC extension parameters of a base view; determining NAL unit header MVC extension parameters of a non-base view; switching between writing and not writing the NAL unit header MVC extension parameters of the base view into prefix NAL units; writing the determined NAL unit header MVC extension parameters of the base view into the prefix NAL units when said switching is performed to write the NAL unit header MVC extension parameters of the base view into the prefix NAL units; coding an image of the base view; writing view components including the coded image of the base view into NAL units; coding an image of the non-base view, using the determined NAL unit header MVC extension parameters of the base view and the determined NAL unit header MVC extension parameters of the non-base view; and writing view components including the coded image of the non-base view into NAL units.