Compressive spectral feature sensing.
IET Image Processing(2019)
摘要
To reduce the size of spectral data, compressive sensing imaging systems are developed to sample fewer measurements than the Nyquist-rate ones, from which the original data can be recovered by the optimisation model and algorithm. However, this is not a cheap option for the case where the real-time acquisition of spectral information is required. To solve this problem, the authors propose a novel sensing approach for spectral features by combining the sampling, recovery and feature extraction. Inspired by the spectral feature representation, the sampling (sensing) matrix is designed from the training spectral samples to sense the spectral features of the imaging scene, which can be utilised for classification and recognition directly. Besides, the physical realisation of the sensing matrix for compressive spectral imaging systems is demonstrated by designing new modulation patterns of the digital micro-mirror device. The experimental results on real spectral data show the feasibility of the proposed scheme and the robustness to the quantisation error and the measurement noise. Moreover, the proposed sensing approach can reduce the cost of computation and time greatly by removing the sparse recovery and feature extraction..
更多查看译文
关键词
optimisation,feature extraction,micromirrors,compressed sensing,image representation,image sampling
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络