멀티트랙 기반 3D 콘텐츠 스트리밍 환경에서의 효율적 재생을 위한 트랙셋 단위 DRM 제어 메커니즘 = A Trackset-Level DRM Control Mechanism for Efficient Playback in Multi-Track 3D Streaming Environments

다국어 초록 (Multilingual Abstract)

Recent 3D immersive media standards such as MPEG-I V3C and the MAF environment represent a single scene as a composition of numerous objects and tracks. In conventional DRM control mechanisms, playback begins only after decryption authorization has been verified for all media tracks. In 3D environments with a large number of objects, this approach causes significant initial playback delay.
In this study, we propose a scene-level DRM control mechanism that leverages the track-set structure of MAF. The 3D scene is classified into mandatory and optional tracksets, and rendering begins immediately once the key status of the mandatory track set is verified. Performance evaluation results demonstrate that the proposed method reduces initial playback waiting time by up to 80% compared to conventional approaches, thereby significantly improving the Quality of Experience (QoE) for immersive content services.