In brief

Abstract

PAGE 1192 Researchers in Korea have developed a bi-directional deformable block-based motion-estimation algorithm for accurate motion prediction in 360-degree videos. A significant improvement in visual quality is demonstrated with this approach in comparison to conventional motion estimation techniques. The proposed algorithm can be used for virtual reality applications, motion estimation and frame-rate up conversion. PAGE 1180 Researchers in Australia have fabricated a non-invasive optical sensor for measuring knee movement in 3D space. The triangular sensor works by measuring the angle-of-arrival of optical signals and is integrated with a 2D image processing procedure. The reported sensor is shown to measure knee movement with a high precision that is within the clinically acceptable limit. Improved visual quality in 360-degree videos using a new motion-estimation algorithm. PAGE 1200 The development of sensors for rapid detection of hydrogen gas is currently a hot topic in renewable fuel research. Work from Korea proposes a Pt-functionalised hydrogen sensor developed on an AlGaN/GaN-on-Si heterostructure platform. The sensor was demonstrated to have high sensitivity and a rapid detection response time of 3 seconds in 4% hydrogen concentration. A novel non-invasive sensor design for measuring knee movement. PAGE 1203 A Decoupled Empty-Substrate Integrated Waveguide (DESIW) has been made by researchers in Spain. The DESIW design is a continuous conductive metal structure that enables AC/DC decoupling with integrated devices, reducing unwanted power losses. Measured scattering and transmission parameters show that the design is highly competitive with alternative technologies. The authors present a new hydrogen sensor with rapid detection response time. PAGE 1226 Lens-based millimeter-wave massive MIMO is a key technique for improving data transfer rates and efficiencies in 5G wireless communications. Work from China introduces an adaptive neighbourhood search algorithm for beam selection, which reduces the energy consumption and hardware costs in mm wave MIMO based systems. The proposed beam selection approach achieves near optimal performance with low complexity. A novel DESIW has been designed and manufactured to improve AC/DC decoupling efficiencies. PAGE 1178 The ability to control a wheelchair's movement through the act of thinking has been achieved by researchers in China. The design is controlled by a wireless dry EEG headset acquisition system and has five steering behaviours controlled by the brain-computer interface. A new adaptive neighbourhood search algorithm for efficient beam selection in 5G wireless technology is proposed. PAGE 1169 Work from China proposes a new approach to providing an antenna for slim electronic devices. Using the existing infrastructure of a laptop computer, the design integrates ground-planes and metal hinges to achieve high radiation efficiency without the physical presence of an antenna structure. The proposed design reduces the physical space taken up by an antenna with reduced manufacturing costs. Five steering behaviours are reported in a newly designed brain-controlled wheelchair. PAGE 1196 The reconstruction of images using compressive sensing can produce restoration precision errors resulting in blurring and low resolution. Researchers in China have developed a compressive sensing algorithm that uses a vector quantisation error to suppress the described precision errors. Experimental results demonstrate the algorithm outperforms previously reported compressive sensing methods in aspects of perception and peak signal-to-noise ratios. Designing an antenna within the hinges of slim electronic devices. PAGE 1209 The miniaturisation of a wideband bandpass filter is achieved using stepped impedance by researchers in India. The device also incorporates dual-mode resonators and three types of inter digital capacitors to achieve frequency selectivity. The authors demonstrate the device to display wide stopband properties suitable for terrestrial trunked radio applications. Vector quantisation error parameters are used to remove precision errors in compressive sensing methods. PAGE 1174 Work from Turkey presents a novel design of C-band Fabry-Perot resonator antenna with improved impedance and bandwidth gaining radiation characteristics. The active element of the antenna is a square patch with four crossing points. The antenna is reported to be suitable for a broad range of applications including satellite communication. A miniaturised wideband bandpass filter has been designed with functional frequency selectivity. A new Fabry-Perot resonator antenna design is proposed for satellite communication applications.