solidot新版网站常见问题,请点击这里查看。
消息
本文已被查看5498次
Interpolation of missing electrode data in electrical impedance tomography. (arXiv:1810.04390v1 [math.NA])
来源于:arXiv
Novel reconstruction methods for electrical impedance tomography (EIT) often
require voltage measurements on current-driven electrodes. Such measurements
are notoriously difficult to obtain in practice as they tend to be affected by
unknown contact impedances and require problematic simultaneous measurements of
voltage and current. In this work, we develop an interpolation method that
predicts the voltages on current-driven electrodes from the more reliable
measurements on current-free electrodes for difference EIT settings, where a
conductivity change is to be recovered from difference measurements. Our new
method requires the a-priori knowledge of an upper bound of the conductivity
change, and utilizes this bound to interpolate in a way that is consistent with
the special geometry-specific smoothness of difference EIT data. Our new
interpolation method is computationally cheap enough to allow for real-time
applications, and simple to implement as it can be formulated with the standar 查看全文>>