Cognitive Load Assessment from EEG and Peripheral Biosignals for the Design of Visually Impaired Mobility Aids

Authors: Charalampos Saitis, Mohammad Zavid Parvez, and Kyriaki Kalimeri in: Wireless Communications and Mobile Computing Abstract: Reliable detection of cognitive load would benefit the design of intelligent assistive navigation aids for the visually impaired (VIP). Ten participants with various degrees of sight loss, navigated in unfamiliar indoor and outdoor environments, while their electroencephalogram (EEG) and electrodermal activity (EDA)… Continue Reading Cognitive Load Assessment from EEG and Peripheral Biosignals for the Design of Visually Impaired Mobility Aids

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Effects of stimulus order on auditory distance discrimination of virtual nearby sound sources

Authors: Simone Spagnol, Rebekka Hoffmann, Árni Kristjánsson, and Federico Avanzini in: The Journal of the Acoustical Society of America 141 Abstract: Stimulus order has been reported to affect perceived loudness. This letter investigates how temporal order affects distance discrimination of receding and approaching pairs of sound sources rendered binaurally in the anechoic near-field. Individual discrimination thresholds for different… Continue Reading Effects of stimulus order on auditory distance discrimination of virtual nearby sound sources

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Relative vibrotactile spatial acuity of the torso

Authors: Ómar I. Jóhannesson, Rebekka Hoffmann, Vigdís Vala Valgeirsdóttir, Rúnar Unnþórsson, Alin Moldoveanu and Árni Kristjánsson in: Experimental Brain Research, November 2017 Abstract: While tactile acuity for pressure has been extensively investigated, far less is known about acuity for vibro-tactile stimulation. Vibrotactile acuity is important however, as such stimulation is used in many applications, including sensory substitution devices.… Continue Reading Relative vibrotactile spatial acuity of the torso

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The Sound of Vision Project: On the Feasibility of an Audio-Haptic Representation of the Environment, for the Visually Impaired

Authors: Ómar I. Jóhannesson, Oana Balan, Runar Unnthorsson, Alin Moldoveanu and Árni Kristjánsson in: Brain Sci. 2016, 6, 20 Abstract: The Sound of Vision project involves developing a sensory substitution device that is aimed at creating and conveying a rich auditory representation of the surrounding environment to the visually impaired. However, the feasibility of such an approach is… Continue Reading The Sound of Vision Project: On the Feasibility of an Audio-Haptic Representation of the Environment, for the Visually Impaired

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Evaluation of Human-Myo Gesture Control Capabilities in Continuous Search and Select Operations

Authors: Adam B. Csapo, Árni Kristjánsson, Hunor Nagy and György Wersényi in: 2017 Federated Conference on Computer Science and Information Systems Abstract: Tactile and haptic devices can be used to control and interact with a wide range of systems, including games, virtual environments and assistive technologies. Although many psychophysical studies have measured thresholds of human sensory capabilities for… Continue Reading Evaluation of Human-Myo Gesture Control Capabilities in Continuous Search and Select Operations

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Ground plane detection in 3D scenes for an arbitrary camera roll rotation through “V-disparity” representation

Authors: Piotr Skulimowski, Mateusz Owczarek, Paweł Strumiłło in: 2017 Federated Conference on Computer Science and Information Systems Abstract: In this paper we proposed a fast method for detecting the ground plane in 3D scenes for an arbitrary roll angle rotation of a stereo vision camera. The method is based on the analysis of the disparity map and its… Continue Reading Ground plane detection in 3D scenes for an arbitrary camera roll rotation through “V-disparity” representation

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Door detection in images of 3D scenes in an electronic travel aid for the blind

Authors: P. Skulimowski, M. Owczarek and P. Strumillo in: 10th International Symposium on Image and Signal Processing and Analysis, Ljubljana, Slovenia, 2017. Abstract: In this paper we propose a fast method for detecting doors in images of 3D scenes. The proposed method was successfully verified on the recorded indoor RGB-D video sequences acquired by a vision based Electronic… Continue Reading Door detection in images of 3D scenes in an electronic travel aid for the blind

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Improving matching performance of the keypoints in images of 3D scenes by using depth information

Authors: K. Matusiak, P. Skulimowski and P. Strumillo in: Proceedings of the 24th International Conference on Systems, Signals and Image Processing (IWSSIP), 22-24 May 2017, Poznan, Poland Abstract: The main part of this work is devoted to description of an original key point detection algorithm that incorporates depth information computed from stereo vision cameras or other depth sensing… Continue Reading Improving matching performance of the keypoints in images of 3D scenes by using depth information

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Adaptive Edge-based Stereo Block Matching algorithm for mobile Graphics Processing Unit

Authors: Maciej Janeczek, Piotr Skulimowski, Mateusz Owczarek and Paweł Strumiłło in: 21st IEEE Conference on Signal Processing – Algorithms, Architectures, Arrangements, and Applications (SPA), SPA 2017 SIGNAL PROCESSING Abstract: This paper presents an efficient adaptive algorithm of stereo matching that was applied and optimized for the mobile Graphics Processing Unit. The presented method introduces a novel approach to… Continue Reading Adaptive Edge-based Stereo Block Matching algorithm for mobile Graphics Processing Unit

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