通过二进制CGH优化实现高对比度、无散斑、真3D全息
High-contrast, speckle-free, true 3D holography via binary CGH optimization
摘要：
全息术是一种很有前途的方法，以实现三维（3D）投影超越目前的二维技术。真正的3D全息术需要具有高轴向分辨率的任意3D体积投影和所有3D体素的独立控制的能力。然而，由于散斑的存在，实现高质量的真三维全息一直是一个挑战。在这里，我们提出了实际的解决方案，实现无散斑，高对比度，真正的三维全息相结合的随机相位，时间复用，二进制全息，和二进制优化。我们采用随机相位的真正的3D实现，以实现最大的轴向分辨率与完全独立的控制的3D体素。我们开发了高性能的二进制全息图优化框架，以最大限度地减少二进制量化噪声，从而为2D和3D情况提供准确和高对比度的重建。利用二进制调制的快速运算，实现了全色高帧频全息视频投影，同时利用时间复用技术克服了随机相位散斑噪声。我们的高品质的真正的3D全息实验验证，同时投影多个任意密集的图像。所提出的方法可以在全息术的各种应用中采用，其中我们展示了在VR和AR近眼显示器中逼真的真实3D全息图的额外演示。这一实现将为下一代全息术开辟一条新的道路。
英文摘要：
Holography is a promising approach to implement the three-dimensional (3D) projection beyond the present two-dimensional technology. True 3D holography requires abilities of arbitrary 3D volume projection with high-axial resolution and independent control of all 3D voxels. However, it has been challenging to implement the true 3D holography with high-reconstruction quality due to the speckle. Here, we propose the practical solution to realize speckle-free, high-contrast, true 3D holography by combining random-phase, temporal multiplexing, binary holography, and binary optimization. We adopt the random phase for the true 3D implementation to achieve the maximum axial resolution with fully independent control of the 3D voxels. We develop the high-performance binary hologram optimization framework to minimize the binary quantization noise, which provides accurate and high-contrast reconstructions for 2D as well as 3D cases. Utilizing the fast operation of binary modulation, the full-color high-framerate holographic video projection is realized while the speckle noise of random phase is overcome by temporal multiplexing. Our high-quality true 3D holography is experimentally verified by projecting multiple arbitrary dense images simultaneously. The proposed method can be adopted in various applications of holography, where we show additional demonstration that realistic true 3D hologram in VR and AR near-eye displays. The realization will open a new path towards the next generation of holography.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
