Abstract
Understanding the human visual gaze mechanism is crucial for enhancing 360° video coding technology. This paper presents a Coding Tree Unit (CTU)-level rate control scheme with λ optimization strategy for 360° Versatile Video Coding (VVC), with the aim of enhancing rate-distortion performance and bitrate accuracy. Specifically, the Lagrange parameter λ is optimized with consideration of distortion dependency and the identification of key CTUs guided by visual gaze, which are derived from a 360° video path generation network, thoroughly integrating the characteristics of the human visual gaze. Experimental results show that the proposed scheme achieves BD-rate savings in terms of Weighted to Spherically uniform-Peak Signal-to-Noise Ratio (WS-PSNR) and Sphere-Peak Signal-to-Noise Ratio (S-PSNR) across various coding configurations.
| Original language | English |
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| Title of host publication | 2025 IEEE International Conference on Image Processing (ICIP) : Proceedings |
| Pages | 641-646 |
| DOIs | |
| Publication status | Published - 18 Aug 2025 |
| Event | 2025 IEEE International Conference on Image Processing (ICIP) - Anchorage, AK, USA, Alaska, United States Duration: 14 Sept 2025 → 17 Sept 2025 |
Conference
| Conference | 2025 IEEE International Conference on Image Processing (ICIP) |
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| Abbreviated title | ICIP |
| Country/Territory | United States |
| City | Alaska |
| Period | 14/09/25 → 17/09/25 |