Patent ID: 8217988

Claim:
A method of encoding an image, comprising: generating a first bitstream by encoding an omni-directional image and transmitting the first bitstream to a decoding apparatus; receiving from the decoding apparatus position information of a region-of-interest selected from an image reconstructed based on the first bitstream; and generating a second bitstream by encoding an image of the region-of-interest based on the position information, wherein the generating of the second bitstream comprises: obtaining a first image corresponding to the region-of-interest from the omni-directional image; obtaining a reconstructed omni-directional image by decoding the first bitstream; obtaining a second image corresponding to the region-of-interest from the reconstructed omni-directional image; and obtaining an error image corresponding to a difference between the first image and the second image and encoding the error image to generate the second bitstream.