The principle and experiments of a new field imaging spectrometer

Junyong Fang; Hongxing Qi; Xue Liu; Yongqi Xue; Qingxi Tong

doi:10.1117/12.832137

30 October 2009 The principle and experiments of a new field imaging spectrometer

Junyong Fang, Hongxing Qi, Xue Liu, Yongqi Xue, Qingxi Tong

Proceedings Volume 7494, MIPPR 2009: Multispectral Image Acquisition and Processing; 74940G (2009) https://doi.org/10.1117/12.832137
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China

Abstract

A combined spectral curve is measured by the traditional field spectrometers in a narrow or wide field range, and the traditional spectral curves are mixed inherently because of the low spatial resolving power. So the mixed spectral pixels were used in the traditional works on the mixed pixel decomposition. A new measure method is proposed to replace the point measurement. The spectral data is captured by the dispersal unit, and one spatial data is from the imaging CCD, and another is captured by the scanning mirror. By the new imaging spectrometer, the target image and spectral curves of every image pixel are captured simultaneously with high spatial resolution. The captured spectral curves could be regarded as the pure curves, which are very useful for the model foundation and analysis of mixed pixel and pixel decomposition. The basic dispersal principle and imaging mode is introduced in this paper. The detailed design is given by the general diagram and the composition figure. The methods and flow chart of the geometric correction and radiometric calibration are discussed in detail. Some experiments are carried out to measure the vegetation and other typical targets, the results of the images and spectral curves are given and discussed.

Citation Download Citation

Junyong Fang, Hongxing Qi, Xue Liu, Yongqi Xue, and Qingxi Tong "The principle and experiments of a new field imaging spectrometer", Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 74940G (30 October 2009); https://doi.org/10.1117/12.832137

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