Human performance and cognition

Our research aims to understand how the Zika virus attacks the brain so that potential steps towards vaccination can be made. Unlike other research groups, IISRI traced the infection back to its source in mosquitoes, the main carriers of the disease. The research involved placing mosquito brain cells on a chip and tracking their activity. It was discovered that mosquitoes infected with the Zika virus were naturally resistant to its most debilitating effects, making them more effective at spreading the virus.

IISRI researchers are using advanced haptic and motion capture technologies to evaluate firearm discharge training tasks. This enables accurate training analysis, supports decision-making and delivers immersive shooting simulation. This research focuses on detailed analysis and realistic modelling of firearm discharge procedures, as well as force modelling and temporal-based calculation and rendering for specific firearms.

Stereo correspondence estimation in one of the most active research areas in the field of computer vision. IISRI researchers have developed an algorithm that uses multi-resolution analysis enforced with wavelets/multi-wavelets transform modulus maxima to establish correspondences between stereo pairs of images.

RGBD sensors project an infrared pattern and calculate depth from the reflected light using an infrared sensitive camera. In this research, the depth-sensing capabilities of two RGBD sensors are compared under various conditions.

Ergonomic assessments increase productivity and performance by helping to prevent and reduce workplace injuries. The aim of this research is to use RGBD cameras for real-time ergonomic assessment in assembly operations. The accuracy and high sampling rates of RGBD sensors create an opportunity to monitor and alert operators if their current posture is risky.

This research proposed a general framework for the analysis of human motion in videos, based on the bag-of-words representation and the probabilistic Latent Semantic Analysis (pLSA) model. This consists of detecting human subjects in videos, extracting pyramid Histogram of oriented Gradient descriptors, constructing a visual codebook by k-means clustering, and supervised learning of the pLSA model for recognition.

The event-related potential (ERP) technique is a derivative of Electroencephalography (EEG), which measures brain activity during the cognitive processing of a sensory, motor or cognitive task. Our research investigates the use of extended multivariate autoregressive  (eMVAR) models for information flow analysis of ERP data. We are developing a range of adaptive estimation techniques, with the goal of improved extraction of the underlying information flow using the ERP data. These techniques are also used in a variety of applied research, including cognitive load assessment, development of brain-machine interfaces and rehabilitation-related studies.

There is a lot of interest in using characteristics such as a person’s face, fingerprints or gait as a form of biomedical identification. Recent research reveals that individuals can be identified from Electrocardiogram (ECG) signals as people have different physiological and geometrical hearts, resulting in unique ECG signals. In our research, we are extracting compact and discriminative features from ECG signals. Unlike previous methods, the proposed method is able to capture both local and global structural information and does not need to segment individual heartbeats or detect fiducial points.

This research looks at interfacing nerve cells on an integrated microfluidics platform with electronics and software systems. The focus is on developing an integrated platform of these promising technologies into a modular platform. This involves interfacing nerve cells in immobilised microstructures inside microfluidics with embedded systems, and investigation of dynamics of bi-directional communication between neuron and silicon.

IISRI researchers have been recognised for a high-tech innovation in automotive design whereby digital mannequins and computer-generated vehicles have been used to assess the comfort of drivers.