Author_Institution :
State Key Lab. of Remote Sensing Sci., Inst. of Remote Sensing & Digital Earth, Beijing, China
Abstract :
Polarized hyperspectral imaging is a new remote sensing method that combines the benefits of polarization and hyperspectral characteristics. Based on a new self-developed polarized field imaging spectrometer system (FISS-P), we collected polarized hyperspectral images of leaves of Sedum spectabile Boreau. Polarization analysis of the diffuse reflectance standard white plate indicated that the FISS-P produced accurate polarization measurements. Ten related polarization parameters (I, Q, U, DoLP, AoP, R0, R60, R120, R, RI) were analyzed in this study. The angle of polarization (AoP) spectral curves of the S. spectabile leaf had no unique spectral features. The degree of linear polarization (DoLP) spectral curves displayed distinct spectral characteristics. However, the DoLP and spectral reflectance curves of the leaf displayed contrasting trends. Different parts of the same leaf, or different S. spectabile leaves, produced different spectral curve shapes. Analysis of the five reflectance parameters demonstrated that R0, R60, R120, RI, and R were consistent for all spectral and spatial aspects.
Keywords :
geophysical image processing; hyperspectral imaging; vegetation; vegetation mapping; Sedum spectabile Boreau; Sedum spectabile leaves; angle of polarization spectral curves; degree of linear polarization spectral curves; diffuse reflectance standard white plate; hyperspectral characteristics; polarization analysis; polarization measurements; polarization parameters; polarized hyperspectral images; polarized hyperspectral imaging; polarized spectral measurement; reflectance parameters; remote sensing method; self-developed polarized field imaging spectrometer system; spatial aspects; spectral aspects; spectral characteristics; spectral curve shapes; spectral features; spectral reflectance curves; Field imaging spectrometer system (FISS); Sedum spectabile boreau; hyperspectral; imaging spectral; polarization;