Method and device for generating depth image using reference image, method for encoding/decoding depth image, and encoder or decoder for the same

摘要

The present invention relates to a method and device for generating a depth image, a method for encoding/decoding the depth image, and an encoder/decoder for the same, which are related to a depth image encoding method that can effectively reduce a bit generation rate using a reference image obtained by at least one camera and improve encoding efficiency. A depth image generating method according to an embodiment of the invention includes a step (a) of obtaining a depth image at a viewpoint and setting the obtained depth image to a reference image; a step (b) of applying a 3D warphing method to the reference image and predicting and generating a depth image at a specific viewpoint; and a step (c) of removing a hole that exists in the predicted and generated depth image.