3D ECT reconstruction by an improved Landweber iteration algorithm

Process tomography of gas-liquid flow in a vessel: a review

“…Subsequently, this technology was studied and applied in various applications including gas-liquid flow process tomography. A typical ECT sensor comprises an array of conducting plate electrodes, which are mounted on the outside of a non-conducting pipe and surrounded by an electrical shield (Yan et al, 2014;Ismail et al, 2011Ismail et al, , 2005Wang et al, 2009;Soleimani et al, 2007;Elmy et al, 2012). A conventional ECT system is based on measurements between electrodes in a single measurement plane, and the reconstructed image is given in the form of a 2D cross-sectional image.…”

“…A conventional ECT system is based on measurements between electrodes in a single measurement plane, and the reconstructed image is given in the form of a 2D cross-sectional image. Three-dimensional ECT, which usually has at least two measurement planes in the axial direction, has gained interest in recent years because of its potential to generate volumetric images (Yan et al, 2014). Threedimensional ECT is also called electrical capacitance volume tomography.…”

Electrical capacitance tomography image reconstruction by improved orthogonal matching pursuit algorithm

“…material distribution) can be reconstructed. Spatial image error (SIE), relative image error (IE) and correlation coefficient (CC) are often used to evaluate the reconstruction quality quantitatively [19,27]. SIE represents the total spatial error information, which includes the error of the reconstructed object in shape, position and area.…”

Estimation of Bubble Properties in Bubbling Fluidized Bed Using ECVT Measurements

“…Despite its extensive use, capacitance tomography also has several limitations including variation in capacitance at one location causing the signal reconstruction to be sensitive to errors and noise . Further, the resolution of the reconstructed images is significantly influenced by the number of electrodes and applied image reconstruction algorithm. , Several algorithms such as linear back-propagation (LBP), Landweber iteration (LI), Tikhonov regularization principle (TRP), , algebraic reconstruction technique (ART), simultaneous iterative reconstruction technique (SIRT), neural network multicriteria optimization image reconstruction technique (NN-MOIRT), , combination of the TRP and ART, modified LI, , total variation iterative soft thresholding (TV-IST), , and others have been proposed in the literature. Of these algorithms, LBP, NN-MOIRT, and TV-IST were used in previous BFB studies (Table ).…”