LIU-SEMEOTICONS group will be at the SPIE Photonics West Conference, Feb 9, 2015 Presenting this paper:
“Estimating skin blood saturation by selecting a subset of hyperspectral imaging data”
Author(s): Maria Ewerlöf, E. Göran Salerud, Tomas Strömberg, Marcus Larsson, Linköping Univ. (Sweden)
Spatial skin blood saturation can be estimated with hyperspectral imaging, but it is often time consuming and computationally demanding. This work aims to find a reduced number of wavelengths for evaluating skin blood saturation. With Monte Carlo simulations, diffusively reflected spectra were simulated for a range of model parameters relevant for human skin. Linear regression analysis was performed to find an intensity ratio that, using at least two wavelengths, provides large sensitiveness to saturation and small variance from other model parameters. Fine-tuning resolution and separation between the wavelengths and calibration for total blood concentration should further improve blood saturation estimation.