Lalit Keshav MESTHA,Palghat Srinivas RAMESH,Alvaro Enrique GIL
申请号：
US13755155
公开号：
US20140213909A1
申请日:
2013.01.31
申请国别(地区):
US
年份:
2014
代理人:
摘要：
What is disclosed is a system and method for estimating a biological parameter vector for a biophysics model using reflectance measurements obtained from a reflectance-based spectral measurement system. The present method uses a semi-empirical biophysics model to describe skin properties and estimate reflectance spectra and reduces the dimensionality of the estimated and measured reflectance spectra using basis vectors for computational efficiency. A mixture of algorithms are employed to generate an initial set of parameters which, in turn, are further refined using an iterative control based technique in which the error between the parameters derived from the measured spectra are compared to the parameters calculated from the estimated spectra. These errors are then processed to generate a small delta to the initial set of parameters. The process is repeated until an error between the estimated virtual biological parameters and the measured virtual biological parameters falls to zero or is otherwise below a pre-defined threshold level.
