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首页> 外文期刊>IEEE Transactions on Image Processing >Realizing a Low-Power Head-Mounted Phase-Only Holographic Display by Light-Weight Compression
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Realizing a Low-Power Head-Mounted Phase-Only Holographic Display by Light-Weight Compression

机译：通过轻量级压缩实现低功耗头戴的相位全息显示器

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Head-mounted holographic displays (HMHD) are projected to be the first commercial realization of holographic video display systems. HMHDs use liquid crystal on silicon (LCoS) spatial light modulators (SLM), which are best suited to display phase-only holograms (POH). The performance/watt requirement of a monochrome, 60 fps Full HD, 2-eye, POH HMHD system is about 10 TFLOPS/W, which is orders of magnitude higher than that is achievable by commercially available mobile processors. To mitigate this compute power constraint, display-ready POHs shall be generated on a nearby server and sent to the HMHD in compressed form over a wireless link. This paper discusses design of a feasible HMHD-based augmented reality system, focusing on compression requirements and per-pixel rate-distortion trade-off for transmission of display-ready POH from the server to HMHD. Since the decoder in the HMHD needs to operate on low power, only coding methods that have low-power decoder implementation are considered. Effects of 2D phase unwrapping and flat quantization on compression performance are also reported. We next propose a versatile PCM-POH codec with progressive quantization that can adapt to SLM-dynamic-range and available bitrate, and features per-pixel rate-distortion control to achieve acceptable POH quality at target rates of 60-200 Mbit/s that can be reliably achieved by current wireless technologies. Our results demonstrate feasibility of realizing a low-power, quality-ensured, multi-user, interactive HMHD augmented reality system with commercially available components using the proposed adaptive compression of display-ready POH with light-weight decoding.
机译：预计头戴式全息显示器（HMHD）被预计是全息视频显示系统的第一次商业实现。 HMHDS在硅（LCOS）空间光调制器（SLM）上使用液晶，最适合于显示阶段全息图（POH）。单色，60 fps全高清，2-Eye，PoH HMHD系统的性能/瓦特要求约为10 TFLOPS / W，其数量级高于商业上可获得的移动处理器的数量级。要缓解此计算功率约束，应在附近的服务器上生成显示就绪POH，并通过无线链路发送到压缩形式的HMHD。本文讨论了一种基于HMHD的增强现实系统的设计，专注于压缩要求和每个像素速率失真折衷，用于从服务器到HMHD的显示就绪POH。由于HMHD中的解码器需要在低功率上运行，因此仅考虑具有低功耗解码器实现的编码方法。还报道了2D相展示和平衡量化对压缩性能的影响。我们接下来提出了一种多功能的PCM-POH编解码器，具有逐行量化，可以适应SLM - 动态范围和可用的比特率，并且每个像素率失真控制的特征，以实现目标率为60-200 Mbit / s的可接受的POH质量可以通过当前的无线技术可靠地实现。我们的结果表明了实现低功耗，质量，多用户，交互式HMHD增强现实系统的可行性，该产品使用商业上可获得的组件使用具有轻量级解码的显示就绪PoH的所提出的自适应压缩。

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