School of ICT, Robotics and Mechanical Engineering, Institute of Information and Telecommunication Convergence (IITC), Hankyong National University, 327 Chungang-ro, Anseong 17579, Kyonggi-do, Republic of Korea.
Sensors (Basel). 2023 Jul 4;23(13):6154. doi: 10.3390/s23136154.
For the reconstruction of high-resolution 3D digital content in integral imaging, an efficient wireless 3D image transmission system is required to convey a large number of elemental images without a communication bottleneck. To support a high transmission rate, we herein propose a novel wireless three-dimensional (3D) image transmission and reception strategy based on the multiple-input multiple-output (MIMO) technique. By exploiting the spatial multiplexing capability, multiple elemental images are transmitted simultaneously through the wireless MIMO channel, and recovered with a linear receiver such as matched filter, zero forcing, or minimum mean squared error combiners. Using the recovered elemental images, a 3D image can be reconstructed using volumetric computational reconstruction (VCR) with non-uniform shifting pixels. Although the received elemental images are corrupted by the wireless channel and inter-stream interference, the averaging effect of the VCR can improve the visual quality of the reconstructed 3D images. The numerical results validate that the proposed system can achieve excellent 3D reconstruction performance in terms of the visual quality and peak sidelobe ratio though a large number of elemental images are transmitted simultaneously over the wireless MIMO channel.
为了在全景成像中重建高分辨率的 3D 数字内容，需要一种高效的无线 3D 图像传输系统，以便在无通信瓶颈的情况下传输大量的元图像。为了支持高传输速率，我们在此提出了一种基于多输入多输出（MIMO）技术的新型无线三维（3D）图像传输和接收策略。通过利用空间复用能力，多个元图像可以通过无线 MIMO 信道同时传输，并使用线性接收器（如匹配滤波器、迫零或最小均方误差组合器）进行恢复。使用恢复的元图像，可以使用非均匀移位像素的体积计算重建（VCR）来重建 3D 图像。尽管接收到的元图像受到无线信道和流间干扰的干扰，但 VCR 的平均效应可以提高重建的 3D 图像的视觉质量。数值结果验证了，尽管通过无线 MIMO 信道同时传输大量元图像，但所提出的系统能够在视觉质量和峰值旁瓣比方面实现出色的 3D 重建性能。
