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Fast model-based multispectral imaging using nonnegative principal component analysis
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DOI：10.1364/OL.37.001937.png)
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Abstract
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Estimation of the spectral reflectance of a scene is a critical problem in image processing and computer vision applications. Model-based multispectral imaging, one of the spectral reflectance estimation methods, can effectively reconstruct the full spectrum using a small number of camera shots. However, it is based on iterative optimization and, thus, is computationally too intensive. In this Letter, we modify the iterative optimization problem to a closed-form problem using nonnegative principal component analysis. The proposed method can substantially reduce the computational cost while maintaining the accuracy. (C) 2012 Optical Society of America
Keywords:
SPECTRAL REFLECTANCE
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