Title of article :
Image Reconstruction Methods for Ultrasonic Transmission Mode Tomography in Bubbly Flow Regime
Author/Authors :
Faramarzi, Mahdi Universiti Teknologi Malaysia - Faculty of Electrical Engineering - Control and Instrumentation Department, Malaysia , Ibrahim, Sallehuddin Universiti Teknologi Malaysia - Faculty of Electrical Engineering - Control and Instrumentation Department, Malaysia , Yunus, Mohd Amri Md Universiti Teknologi Malaysia - Faculty of Electrical Engineering - Control and Instrumentation Department, Malaysia , Pusppanathan, Jaysuman Universiti Teknologi Malaysia - Faculty of Electrical Engineering - Control and Instrumentation Department, Malaysia
Abstract :
Image reconstruction from projections plays an important role in monitoring flow regimes by ultrasonic transmission mode tomography (UTMT) system. Fast and more accurate methods are necessary in case of on-line process e.g. bubbly flow regimes. In this work, analytical image reconstruction methods such as linear back projection (LBP), filter back projection (FBP) and convolution back projection (CBP) in bubbly flow regime is investigated and found that CBP is superior to other methods. Furthermore, different filters were applied to CBP to investigate the image quality improvement. Among different types of filters for CBP method, Ram-lack outperforms the others for UTMT. The peak signal to noise ratio (PSNR) of reconstructed images in this particular experiment was improved using Ram-lack in noiseless data.
Keywords :
Analytical image reconstruction , LBP , CBP , ultrasonic transmission mode tomography
Journal title :
Jurnal Teknologi :F
Journal title :
Jurnal Teknologi :F
