Method for locating an optical marker in a diffusing medium

摘要

A method for locating at least one optical marker in a diffusing medium, the marker having at least one optical property different from the diffusing medium, wherein: a) a pulsed radiation interacts with the medium and the at least one optical marker, producing an optical signal, and at least one acquisition of data of the optical signal is performed, each acquisition including one or more time components of interest, due to the at least one marker, and a spurious component, due to the medium other than the at least one marker, b) a multidimensional array X is formed from the optical signal data of the at least one of the acquisitions, c) the array X is processed by factorization into a product of only two non-negative multidimensional arrays A and S, and d) at least one of the time components is extracted from the arrays A and S.

主权项

1. A method for locating at least one optical marker in a diffusing medium, said marker having at least one optical property different from the diffusing medium, the method comprising:
a) producing an optical signal by the pulsed radiation of a pulse radiation source interacting with said medium and said at least one optical marker, and performing at least one acquisition of data of said optical signal, each acquisition including a first time distribution of a component of interest in the optical signal due to said at least one marker and a second time distribution of a spurious component in the optical signal due to said medium other than said at least one marker; b) forming a multidimensional array X from said optical signal data of said at least one of said acquisitions; c) processing said array X by factorization into a product of only two non-negative multidimensional arrays A and S; and d) extracting at least one of said first time distribution and said second time distribution from said arrays A and S.