A gradient-based optimisation scheme for optical tomography.
213 - 226.
Optical tomography schemes using non-linear optimisation are usually based on a Newton-like method involving the construction and inversion of a large Jacobian matrix. Although such matrices can be efficiently constructed using a reciprocity principle, their inversion is still computationally difficult. In this paper we demonstrate a simple means to obtain the gradient of the objective function directly, leading to straightforward application of gradient-based optimisation methods. (C) 1998 Optical Society of America.
|Title:||A gradient-based optimisation scheme for optical tomography|
|Open access status:||An open access publication|
|Keywords:||FINITE-ELEMENT-METHOD, MEASUREMENT DENSITY-FUNCTIONS, NEAR-INFRARED SPECTROSCOPY, TIME-OF-FLIGHT, TISSUE, RECONSTRUCTION, PATHLENGTH, MEDICINE, INFANTS, MEDIA|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science > Computer Science|
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