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Title

A new matching image preprocessing for image data fusion

AuthorsPiqueras Solsona, Sara; Maeder, Marcel; Tauler, Romà; De Juan, Anna
KeywordsImaging matching
Multitechnique image analysis
Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS)
MCR-ALS
Issue Date15-May-2017
PublisherElsevier
CitationChemometrics and Intelligent Laboratory Systems: 164: 32-42 (2017)
AbstractHyperspectral images collected with different spectroscopic techniques can be combined to benefit from complementary information and to improve the general description of chemical systems. The simultaneous analysis of images collected by different spectroscopic platforms can only be carried out when images are spatially matched with each other (i.e., different pixel sizes should be balanced and translation/rotation/scaling transformations should be done if required). The main goal of this work is the proposal of a general methodology to match image spatial properties that uses all pixels acquired in the images and, therefore, avoids the step of selecting analogous reference pixels to be compared. The effect of working with different kinds of image starting information on the robustness of the retrieved optimal translation and rotation parameters has also been assessed. The study has been tested in two different representative situations, namely: a) imaged sample with a clear contour b) imaged sample without defined contour. A final study on the effect of proper image matching is performed by applying Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) to the multiset formed by the appended images from different spectroscopic platforms before and after matching. © 2017 Elsevier B.V.
Publisher version (URL)https://doi.org/10.1016/j.chemolab.2017.02.013
URIhttp://hdl.handle.net/10261/158179
DOI10.1016/j.chemolab.2017.02.013
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