Advanced Algorithms for Exploitation of Space-Based Imagery

"This SBIR will examine the use of hyperspectral mixture models that may be used to create shadow invariant images for material matching and hidden target detection and tracking. This proposal introduces an "Illumination-based Linear Unmixing Procedure"(ILUMP). ILUMP assumes that every image is illuminated by two spectrally different illumination sources and that at each pixel the illumination source may be partly occluded. This is typically the case in outdoor daytime scenes where there is bothsunlight and skylight illumination. The ILUMP formulation requires more sophisticated and computationally expensive model estimation. But this more precise model helps improve the results of applications such as shadow removal and material matching. Theproposed contract would further the development of this model by developing model parameter estimation methods and applications of the proposed technologies. The proposed technologies are applicable to remote sensing applications for environmentalapplications, geological applications, and defense applications. Additionally the techniques may be transferable to color image processing for photo labs, digital cameras, and film studio production and processing."