Fast processing of imaging spectrometer data cube based on FPGA design

Yongdao Luo; Ningfang Liao; Xinquan Wang; Minyong Liang; Jie Fen

doi:10.1117/12.742218

15 November 2007 Fast processing of imaging spectrometer data cube based on FPGA design

Yongdao Luo, Ningfang Liao, Xinquan Wang, Minyong Liang, Jie Fen

Proceedings Volume 6787, MIPPR 2007: Multispectral Image Processing; 678708 (2007) https://doi.org/10.1117/12.742218
Event: International Symposium on Multispectral Image Processing and Pattern Recognition, 2007, Wuhan, China

Abstract

This paper presents a hardware-based implementation, which is specially designed for fast processing data cube of the novel imaging spectrometer, the Computed-Tomography Imaging Interferometer (CTII). CTII is the combination of the conventional Fourier Transformation Imaging Spectrometer (FTIS) and the Computed-Tomography Imaging Spectrometer (CTIS). CTII retains the advantages of both FTIS and CTIS such as high etendue, high spectral resolution. The price paid for above advantages is much enormous amounts of calculation compared with FTIS and CTIS. The CTII algorithm mainly includes two processing parts. One is Fast Fourier Transformation (FFT) Algorithm, the other is the Convolution Back-Projection (CBP) Algorithm. Since these two parts can be dealt separately, we introduced the pipeline processing technology. In this paper, we develop a hardware-based version of the CTII algorithm to improve its computational performance by resorting to Field Programmable Gate Arrays (FPGA) reconfigurable boards. The proposed FPGA design represents our first step toward the development of a system for onboard analysis of CTII hyperspectral imagery. The results we obtained demonstrate that the concept of the Computed-Tomography Imaging Interferometer (CTII) is correct, and the hardware-based version of the CTII algorithm is high efficiency in processing CTII data cube.

Citation Download Citation

Yongdao Luo, Ningfang Liao, Xinquan Wang, Minyong Liang, and Jie Fen "Fast processing of imaging spectrometer data cube based on FPGA design", Proc. SPIE 6787, MIPPR 2007: Multispectral Image Processing, 678708 (15 November 2007); https://doi.org/10.1117/12.742218

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