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题名:
HIGH-SPEED SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY SIGNAL PROCESSING WITH TIME-DOMAIN INTERPOLATION USING GRAPHICS PROCESSING UNIT
作者: Li, Xiqi1,2,3; Shi, Guohua1,2,3; Wei, Ling1,2,3; Ding, Zhihua4; Zhang, Yudong1,2
刊名: JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES
出版日期: 2011-07-01
卷号: 4, 期号:3, 页码:325-335
关键词: SD-DCT ; time-domain interpolation ; GPU ; CUDA ; data processing
文章类型: Article
英文摘要: Sensitivity and data processing speed are important in spectral domain Optical Coherence Tomography (SD-OCT) system. To get a higher sensitivity, zero-padding interpolation together with linear interpolation is commonly used to re-sample the interference data in SD-OCT, which limits the data processing speed. Recently, a time-domain interpolation for SD-OCT was proposed. By eliminating the huge Fast Fourier Transform Algorithm (FFT) operations, the operation number of the time-domain interpolation is much less than that of the zero-padding interpolation. In this paper, a numerical simulation is performed to evaluate the computational complexity and the interpolation accuracy. More than six times acceleration is obtained. At the same time, the normalized mean square error (NMSE) results show that the time-domain interpolation method with cut-off length L = 21 and L = 31 can improve about 1.7 dB and 2.1 dB when the distance mismatch is 2.4 mm than that of zero-padding interpolation method with padding times M 4, respectively. Furthermore, this method can be applied the parallel arithmetic processing because only the data in the cut-off window is processed. By using Graphics Processing Unit (GPU) with compute unified device architecture (CUDA) program model, a frame (400 A-lines x 2048 pixels x 12 bits) data can be processed in 6 ms and the processing capability can be achieved 164,000 line/s for 1024-OCT and 71,000 line/s for 2048-OCT when the cut-off length is 21. Thus, a high-sensitivity and ultra-high data processing SD-OCT is realized.
WOS标题词: Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
类目[WOS]: Optics ; Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]: Optics ; Radiology, Nuclear Medicine & Medical Imaging
收录类别: SCI
语种: 英语
WOS记录号: WOS:000208648300014
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3412
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Lab Adapt Opt, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China
4.Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China

Recommended Citation:
Li, Xiqi,Shi, Guohua,Wei, Ling,et al. HIGH-SPEED SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY SIGNAL PROCESSING WITH TIME-DOMAIN INTERPOLATION USING GRAPHICS PROCESSING UNIT[J]. JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES,2011,4(3):325-335.
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