Abstract
A truncated-Newton algorithm for three-dimensional electrical impedance tomography is presented. Explicit formation of the Hessian, normally a computational bottleneck, is avoided through use of a preconditioned conjugate gradient (PCG) solution of the Levenberg-Marquardt update. The PCG preconditioner is formed as a product of a sparse approximation of the Jacobian by its transpose.
| Original language | English |
|---|---|
| Pages (from-to) | 2189-2191 |
| Number of pages | 3 |
| Journal | Electronics Letters |
| Volume | 35 |
| Publication status | Published - 1999 |
Keywords
- RESISTANCE TOMOGRAPHY