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