MOVING IMAGE DISTRIBUTION SERVER, MOVING IMAGE PLAYBACK APPARATUS, CONTROL METHOD, AND RECORDING MEDIUM

摘要

A moving image distribution server sets an evaluation pixel for each of blocks that it divided a first screen into, and specifies a screen coordinate and a depth value, in a second screen acquired before the first screen, for a rendering object rendered on the evaluation pixel. It compares a depth value of the screen coordinate and a depth value of the rendering object rendered on the evaluation pixel, and determines that inter-frame coding will be performed with the second screen for a block for which the 2 depth values are considered to be the same. It transmits, to a external device, coding details information including the viewpoint information of the first screen, a depth buffer of the first screen, and information indicating whether or not blocks of the first screen are to be inter-frame coded.

主权项

1. A non-transitory computer-readable recording medium storing a program for causing a computer to execute the following processing:
processing for obtaining, for a target frame which is a target of encoding and a reference frame which is referred to for the encoding of the target frame, viewpoint information used for rendering each of the target frame and the reference frame and a depth buffer generated when rendering an image corresponding to each of the target frame and the reference frame; processing for specifying, for an evaluation pixel in a region defined in the depth buffer of the target frame, a position of a corresponding pixel which corresponds to the evaluation pixel in the depth buffer of the reference frame and an estimated depth value of the corresponding pixel, based on the viewpoint information obtained for the target frame and the reference frame and the depth buffer of the target frame; and processing for deciding an encoding method to be used for a target block of the target frame corresponding to the region including the evaluation pixel based on the estimated depth value and a depth value of the corresponding pixel in the depth buffer of the reference frame.