Simon Fraser University, School of Engineering Science, Burnaby, BC V5A 1S6, Canada.
J Biomed Opt. 2013 Feb;18(2):26002. doi: 10.1117/1.JBO.18.2.026002.
In this report, we describe how to highly optimize a computer unified device architecture based platform to perform real-time processing of optical coherence tomography interferometric data and three-dimensional (3-D) volumetric rendering using a commercially available, cost-effective, graphics processing unit (GPU). The maximum complete attainable axial scan processing rate, including memory transfer and displaying B-scan frame, was 2.24 MHz for 16 bits pixel depth and 2048 fast Fourier transform size; the maximum 3-D volumetric rendering rate, including B-scan, en face view display, and 3-D rendering, was ~23 volumes/second (volume size: 1024×256×200). To the best of our knowledge, this is the fastest processing rate reported to date with a single-chip GPU and the first implementation of real-time video-rate volumetric optical coherence tomography (OCT) processing and rendering that is capable of matching the acquisition rates of ultrahigh-speed OCT.
在本报告中，我们描述了如何对基于计算机统一设备架构的平台进行高度优化，以便使用市售的、具有成本效益的图形处理单元 (GPU) 实时处理光学相干断层扫描干涉数据和三维 (3-D) 体绘制。对于 16 位像素深度和 2048 快速傅里叶变换大小，最大完整可达到的轴向扫描处理速率，包括内存传输和显示 B 扫描帧，为 2.24 MHz；最大的 3-D 体绘制速率，包括 B 扫描、面内视图显示和 3-D 绘制，约为 23 个体积/秒（体积大小：1024×256×200）。据我们所知，这是目前使用单芯片 GPU 报告的最快处理速率，也是首次实现能够与超高速 OCT 采集速率匹配的实时视频速率 OCT 处理和渲染。
