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- W4224932949 abstract "Panoramic or 360-degree virtual reality videos have high resolution, frame rate, and visual quality that demand efficient coding. Although a user watching a 360-degree video can switch viewing angles, only a portion of the video in the user’s Field of View (FoV) is displayed at any time. In this paper, we propose an FoV-based coding scheme for 360-degree videos, which allocates more bits to tiles of the predicted FoV area than other tiles. Taking possible FoV prediction error into account, the proposed scheme aims to minimize the expected weighted distortion of the FoV region, where different weights are given to tiles at different locations representing the influence of projection from spherical domain to the 2D plane. Accordingly, an adaptive tile-level quantization parameter (QP) selection scheme is derived. Simulation results demonstrate the effectiveness of the proposed scheme." @default.
- W4224932949 created "2022-04-28" @default.
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- W4224932949 date "2022-05-23" @default.
- W4224932949 modified "2023-09-26" @default.
- W4224932949 title "FOV-Based Coding Optimization for 360-Degree Virtual Reality Videos" @default.
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- W4224932949 doi "https://doi.org/10.1109/icassp43922.2022.9746379" @default.
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