本文主要是介绍5. Full-View Non-Equal Quality (Viewport-Dependent)，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
Full-View Non-Equal Quality (Viewport-Dependent)
全视图质量不相等（取决于视口）
Full-View Non-Equal Quality, a technique that falls under the category of Viewport-Dependent streaming for 360-degree videos, is an approach that aims to provide a balance between video quality and bandwidth efficiency by allocating different qualities to different areas of the spherical video based on the viewer’s perspective. Here are the key characteristics of Full-View Non-Equal Quality streaming:
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Varying Quality Across the Spherical Video: In this method, the entire 360-degree video is divided into different segments or regions, each with varying levels of quality. Unlike Full-View Equal Quality, where all parts have the same quality, this approach allows for a more dynamic allocation of bitrates.
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Quality Prioritization for the Viewed Area: The regions or segments within the viewer’s current field of view are encoded at a higher quality, while non-viewed areas are encoded at a lower quality. This prioritizes the quality of the video where the viewer is looking.
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Bandwidth Efficiency: Full-View Non-Equal Quality is more bandwidth-efficient compared to Full-View Equal Quality, as it reduces the quality in non-viewed areas. This approach conserves network resources and allows for smoother streaming.
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Improved Visual Experience: By optimizing quality allocation for the viewer’s immediate field of view, this method enhances the visual experience and immersion. The viewer perceives higher detail and resolution where they are looking.
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Dynamic Adaptation: Similar to Viewport-Only Equal Quality, Full-View Non-Equal Quality streaming dynamically adapts the quality based on the viewer’s perspective. It continually shifts the higher quality to the current viewport as the viewer’s gaze changes.
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Challenges: Implementing Full-View Non-Equal Quality can be complex as it requires real-time tracking of the viewer’s gaze and efficient encoding and delivery mechanisms to adjust the quality in real-time.
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Optimal for Head-Mounted Displays: This streaming method is well-suited for head-mounted displays (HMDs), such as VR headsets, where precise tracking of the viewer’s head movement and gaze is important for an immersive experience.
Full-View Non-Equal Quality strikes a balance between quality and bandwidth efficiency, making it a practical solution for delivering high-quality 360-degree video content. It ensures that the viewer experiences optimal quality where they are looking, while non-viewed areas are encoded at a lower quality to save bandwidth. As technology advances and streaming protocols evolve, strategies like this one are critical for enhancing the 360-degree video viewing experience.
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