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This paper presents a study of human behavior related to different marketing stimuli based on pupillometry data. The consumer's gaze points on products of interest are acquired with a remote eye tracker and the obtained heatmaps and timestamps are used for further analysis. An application for recording user's visual attention on web pages and advertising slides is implemented. A sensor for electrodermal...
Visual feedback is a very important component for re-learning motor tasks in post stroke recovery. In this paper, a virtual reality (VR) based system for stroke recovery for upper limbs is described, where the patient is immersed with the help of a Head Mounted Display (HMD). The HMD renders a 3D scene containing the avatar of the patient, from a virtual camera position placed on the head of the avatar...
In this paper a new pupil detection algorithm based on RANSAC procedure is presented. Unlike other similar algorithms reported in the literature, the proposed algorithm provides higher accuracy, low running time and operates properly in noise conditions and for variable illumination. This algorithm is used in the field of assistive technology in order to communicate with neuromotor disabled people...
In this paper we describe the usability assessment of a system designed to help blind and visually impaired people to navigate and perceive the environment. The proposed system is based on sensory substitution, remapping the vision stimuli into audio and haptic ones. The goal of this study is to aid the development of the sensory substitution device (SSD) by understanding how the different choices...
This paper proposes a new technique that can be used by patients with neuro-motor disabilities to control a PC by means of eye tracking. The technique uses a system that includes an infrared camera and a computer that processes the signals provided by the pupil detection algorithm. The software component is represented by the pupil detection algorithm, which offers information about the cursor position...
In this paper we describe a framework for assessing the cognitive and emotional activity of blind and visually impaired people in relation to the usage of a sensory substitution system (SSD). The overall objective is to aid the design and development of the SSD by understanding how the different choices in encoding and rendering the environmental information to the user, as well as training, affects...
The TRAVEE system is a Virtual Reality (VR) based system that will assist patients disabled as a result of a cerebrovascular accident as well as doctors, physicians and physiotherapists working alongside the patients toward the rehabilitation of their upper limbs. The system has been developed throughout the past two years and it has reached the state of the first in-vivo tests with the patients....
In this paper a virtual reality based stroke recovery system for upper limbs is described. The patient is immersed in the virtual environment through the use of an Oculus Rift device and interacts with the system by using Leap Motion as input device. The patient experience is enriched by providing haptic feedback when interacting with objects in the virtual environment. The recovery therapy relies...
A low cost smart system for upper limbs motor function recovery is presented in this paper. Based on Virtual Reality, the proposed system ushers the patient in a virtual scenario where a virtual therapist coordinates the recovery exercises aimed at restoring brain function. An inertial measurement unit, a glove with sensors and an immersive virtual reality headset connect the patient to the virtual...
This paper aims to present a BCI based rehabilitation system and communication tool for stroke survivors. The system uses P300 evoked potential in order to control a hand orthosis or to write text. The key element is the real-time feature extraction and classification that works fast enough to present a feedback to the patient on the computer display. That helps the patient to learn faster to control...
This paper presents the implementation of an eye-tracking device based on the circular Hough transform algorithm. The proposed device is a part of a complex integrated system for assistance in communicating with and telemonitoring severe neuromotor disabled patients, which consists of an infrared video camera and a PC used to process the captured signals. The eye-tracker device that we have implemented...
The paper describes a software application running on Android mobile devices, used to help the neuromotor disabled patients to communicate with the clinicians or caretakers. The proposed application also include a telemonitoring (remote monitoring) component used to collect and process few physiological parameters of the patient. The application is part of a more complex communication and monitoring...
The paper presents a software application which implements a dialog between neuromotor disabled patients and clinicians. The patient can't speak normally, but he can manifest his intention by moving a finger or other body part which can be translated into a mouse click. The software application reads the mouse click and builds a message for the nurse or other clinician from that hospital. The nurse...
In this paper are presented several techniques used for improving the pupil detection algorithm based on a head mounted eye tracking system employing an infrared video camera. The coordinates of the eye pupil center obtained by any eye tracker device are affected by many noise sources. In order to improve the pupil detection position, several different techniques of real time filtering and high frequency...
This work presents the design aspects of TRAVEE, a neuromotor rehabilitation system. The TRAVEE system relies on innovative concepts for improving the rehabilitation process and increasing the patient recovery rate. One such concept is to present the patient an augmented feedback as part of a learning process based on neuroplasticity. Most of the rehabilitation exercises are based on visual feedback...
The haptic technology (i.e. Touch based interfaces) provides new means for the human machine interaction. Haptic devices can make the interaction experience richer for healthy individuals and can augment the perceptions of impaired people. This paper presents the design of a haptic system wirelessly controlled by a remote application that runs on a computer. The hardware and software architecture...
This paper presents a software application which helps the neuromotor disabled patients to communicate with the clinicians. The proposed system also includes a telemonitoring component which collects the signals corresponding to various patients' physiologic parameters. Due to their affections, the patients can't speak or write but they can manifest their intentions toggling a switch, using a finger...
In this paper, solutions to improve the stability and time response for head mounted eye tracking system are presented. The detection of eye pupil centre coordinates is affected by noise due to physiologic eye tremor, noisy images and the algorithm used for pupil detection. That leads to unstable point of gaze detection, affecting the eye tracking precision. Treating pupil centre coordinates as two...
This paper presents a new CMOS differential input FM quadrature demodulator for integrated circuits. The proposed circuit is based on Bilotti's quadrature demodulator that uses an external differential phase shift network and a differential phase detector with a single ended output. The phase detector is represented by an analog multiplier implemented with a Gilbert cell and the phase shift network...
Among the various techniques used for the detection of gaze direction, the procedure based on determining pupil or iris position using video camera connected to a computer deserves special attention. Gaze follows the movement of an item — “a target point” on the PC screen, the video camera captures the images of the eye and the PC determines the gaze position; this appears as “a map” on which the...
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