Optical tomography: Image improvement using mixed projection of parallel and fan beam modes

Mixed parallel and fan beam projection is a technique used to increase the quality images. This research focuses on enhancing the image quality in optical tomography. Image quality can be defined by measuring the Peak Signal to Noise Ratio (PSNR) and Normalized Mean Square Error (NMSE) parameters. The findings of this research prove that by combining parallel and fan beam projection, the image quality can be increased by more than 10%in terms of its PSNR value and more than 100% in terms of its NMSE value compared to a single parallel beam

Ultrasonic sensor for imaging measurement techniques

Generally, are many methods for imaging measurement techniques, traditional and modern method and still have pros and cons between these two ways. Basically, the traditional techniques method is reported does not fully meet the specification of modern industry nowadays. Traditional method mainly includes electromagnetic detection, eddy current testing and etc. Differ with the modern method which is using the ultrasonic for imaging techniques and involving the laser ultrasonic, ultrasonic velocity, real time ultrasonic and off axis propagation of ultrasonic which be define the modern method is widely used industry to improve from the traditional method. Rumoured has been widely separate that modern techniques of imaging measurement are gaining popularity from every industry such as in medical instrument, construction instrument, synthetic aperture and holographic imaging measurement. Modern industry has proposed various method in using the ultrasonic in order to improve the quality of work in industry. Several advantages have been discovered while using the ultrasonic industry such as in mediation which is ultrasonic is used to improve the imaging in human soft tissue, meanwhile in construction ultrasonic giving an advantage in defect detection in specific information such as the location on defection and the size of defection. Besides that, in real time ultrasonic imaging is giving an advantage in focusing for multi-layered objects with synthetic aperture and lastly ultrasonic also give an advantage in guided wave in thin orthotropic layers which is its been use for dynamic holographic imaging measurement

Inductive proximity sensor for metal detection

Proximity sensor is among the oldest electronic parts in automation history. The recent research and progress of inductive proximity wave (IPS) sensor has grown with various demands of the domain. The IPS sensors have several unique benefits, such as light weight, small size, and immune to adverse environmental conditions and have a high switching rate for rapid response specifications. Means that, with the ability to detect at close range, IPS is a very useful for precision measurement applications

Hardware Development of Dual-Modality Tomography Using Electrical Resistance and Ultrasonic Transmission Tomography for Imaging Liquid and Gas

In decades, single-modality technique focuses on particular application such as liquid/gas, gas/solid, liquid/liquid and liquid/solid which has drawbacks in imaging complex flow with multiple components. This paper focuses on the development of dual-modality tomography system (DMT) integrating ultrasonic tomography and electrical resistance tomography (ERT) to visualize cross-sectional images of two-phase liquid/gas in vertical column. A combination of soft-field and hard-field tomography system measures different physical parameters of two-phase liquid/gas specific of two different material properties which are conductivity (σ) and acoustics impedance (Z). A DMT system is developed with 16 units of ultrasonic transceiver sensors, and 16 units of ERT electrode positioned alternately on a single-plane arrangement to perform measurement simultaneously. The reconstructed tomographic images obtained from measurement data from these two modalities are then fused into a single tomographic image by employing discrete wavelet transform (DWT)

Hardware Development of Dual-Modality Tomography Using Electrical Resistance and Ultrasonic Transmission Tomography for Imaging Liquid and Gas

In decades, single-modality technique focuses on particular application such as liquid/gas, gas/solid, liquid/liquid and liquid/solid which has drawbacks in imaging complex flow with multiple components. This paper focuses on the development of dual-modality tomography system (DMT) integrating ultrasonic tomography and electrical resistance tomography (ERT) to visualize cross-sectional images of two-phase liquid/gas in vertical column. A combination of soft-field and hard-field tomography system measures different physical parameters of two-phase liquid/gas specific of two different material properties which are conductivity (σ) and acoustics impedance (Z). A DMT system is developed with 16 units of ultrasonic transceiver sensors, and 16 units of ERT electrode positioned alternately on a single-plane arrangement to perform measurement simultaneously. The reconstructed tomographic images obtained from measurement data from these two modalities are then fused into a single tomographic image by employing discrete wavelet transform (DWT)

Graphical user interface for electrical resistance tomography system on static gas bubble in a vertical metallic column

This paper presents the software development for the ERT system used to monitor the static two phase (liquid/gas) flow for the application of a metallic bubble column wall. The software is developed using Graphical User Interface (GUI) application program in MATLAB. The software contains numerous functions to enable users to obtain the necessary information from the research. The animated projection of a single pair projection of the sensitivity distribution for a conducting boundary strategy, along with its weight balance map and normalised sensitivity map, can be viewed from the sensitivity distribution dropdown list. The images for the metal column with several phantoms using COMSOL simulation and experimental data can be viewed by clicking the construct image button in the GUI. The value for the assessment of the quality of each image is also displayed concurrently for each phantom selected

Simulation study of two-phase fluid 3D imaging using lab-on-chip ECT

Electrical Capacitance Tomography (ECT) is a popular technique for multi-phase fluidic imaging. For the sake of better microfluidics handling within a miniaturized platform, this paper presents a simulation study of a lab-on-chip 3D ECT model with two set of 8-planar-electrode arrays position circularly on the top and bottom layer of the sensing microchamber. The presented simulation studies are to reconstruct the 3D images of a square phantom (water) in a background (air) with different location by using Linear Backward Propagation (LBP) as the image reconstruction algorithm. The simulation results have shown that the proposed lab-on-chip 3D ECT is capable to identify the different position of the phantom

Optical tomography: image improvement using mixed projection of parallel and fan beam modes

Mixed parallel and fan beam projection is a technique used to increase the quality images. This research focuses on enhancing the image quality in optical tomography. Image quality can be defined by measuring the Peak Signal to Noise Ratio (PSNR) and Normalized Mean Square Error (NMSE) parameters. The findings of this research prove that by combining parallel and fan beam projection, the image quality can be increased by more than 10% in terms of its PSNR value and more than 100% in terms of its NMSE value compared to a single parallel beam

Hardware development of dual-modality tomography using electrical resistance and ultrasonic transmission tomography for imaging liquid and gas

In decades, single-modality technique focuses on particular application such as liquid/gas, gas/solid, liquid/liquid and liquid/solid which has drawbacks in imaging complex flow with multiple components. This paper focuses on the development of dual-modality tomography system (DMT) integrating ultrasonic tomography and electrical resistance tomography (ERT) to visualize cross-sectional images of two-phase liquid/gas in vertical column. A combination of soft-field and hard-field tomography system measures different physical parameters of two-phase liquid/gas specific of two different material properties which are conductivity (σ) and acoustics impedance (Z). A DMT system is developed with 16 units of ultrasonic transceiver sensors, and 16 units of ERT electrode positioned alternately on a single-plane arrangement to perform measurement simultaneously. The reconstructed tomographic images obtained from measurement data from these two modalities are then fused into a single tomographic image by employing discrete wavelet transform (DWT)