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By way of example, by simulating hyperspectral information with different spatial resolution, Luo  evaluated the adaptability of linear spectral unmixing to various amounts of spatial resolution. Jiao  simulated hyperspectral information to evaluate the influence of spatial and spectral resolution to vegetation classification. Moreover, PYR-41 simulated data are frequently utilized to evaluate and test novel algorithms which include target detection and identification algorithms in hyperspectral remote sensing. There's no easy approach to simulate hyperspectral data for testing the efficiency of these algorithms. If simulated hyperspectral information could be easily obtained, it can drastically aid the testing and growth of new algorithms.
The universal pattern decomposition strategy (UPDM) is actually a sensor-independent system which could be regarded like a spectral reconstruction method, in which each and every satellite pixel is expressed as the linear sum of fixed, regular spectral patterns for water, vegetation, and soil, along with the same normalized spectral patterns could be utilized for various solar-reflected spectral satellite thenthereby sensors . Sensor independence involves that evaluation benefits for your very same sample will be the same or practically the same regardless of the sensor used. Based on this trait, here we current a method based around the universal pattern decomposition approach (UPDM) to attain the intention of simulating hyperspectral data from multispectral information, which could be deemed either a method of spectral building or spectral transform. The hyperspectral and multispectral information are NASA EO-1 satellite/Hyperion and EO-1/ALI information, respectively (see Part three.
2 to get a short introduction). 1st, we obtained ALI and Hyperion data covering the identical location and carried out atmospheric correction to acquire surface reflectance information; right here Hyperion data served as normal or genuine data to assess the outcomes in the subsequent evaluation. Then, we obtained the decomposition coefficients imagined to be sensor-independent for the very same sample by applying selleck compound the UPDM to ALI information; these coefficients had been subsequently employed to construct Hyperion information. Prior to carrying out UPDM, conventional pattern matrices of each sensors have been calculated primarily based about the standard spectral patterns (see Area two for information). Finally, the simulated Hyperion data had been in contrast using the genuine Hyperion data, i.e., test information, to assess and assess this approach.2.?Spectral Reconstruction Approach6.1. Critique with the Universal Pattern Decomposition Technique (UPDM)The spectral reconstruction method is based mostly around the UPDM, that is a sensor-independent strategy derived from PDM that has been efficiently applied in many studies [14�C21].