References of "Verly, Jacques"
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See detailA real time prediction device
Verly, Jacques ULiege; Ebrahimbabaie Varnosfaderani, Pouyan ULiege

in A real time prediction device (2017)

Detailed reference viewed: 18 (6 ULiège)
See detailA prediction device
Verly, Jacques ULiege; Ebrahimbabaie Varnosfaderani, Pouyan ULiege

in A prediction device (2017)

Detailed reference viewed: 25 (6 ULiège)
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See detailProbabilistic Framework for the Characterization of Surfaces and Edges in Range Images, with Application to Edge Detection
Lejeune, Antoine ULiege; Verly, Jacques ULiege; Van Droogenbroeck, Marc ULiege

in IEEE Transactions on Pattern Analysis & Machine Intelligence (2017)

We develop a powerful probabilistic framework for the local characterization of surfaces and edges in range images, which is useful in many applications of computer vision, such as filtering, edge ... [more ▼]

We develop a powerful probabilistic framework for the local characterization of surfaces and edges in range images, which is useful in many applications of computer vision, such as filtering, edge detection, feature extraction, and classification. We use the geometrical nature of the data to derive an analytic expression for the joint probability density function (pdf) for the random variables used to model the ranges of a set of pixels in a local neighborhood of an image. We decompose this joint pdf by considering independently the cases where two real world points corresponding to two neighboring pixels are locally on the same real world surface or not. In particular, we show that this joint pdf is linked to the Voigt pdf and not to the Gaussian pdf as it is assumed in some applications. We apply our framework to edge detection and develop a locally adaptive algorithm that is based on a probabilistic decision rule. We show in an objective evaluation that this new edge detector performs better than prior art edge detectors. This proves the benefits of the probabilistic characterization of the local neighborhood as a tool to improve applications that involve range images. [less ▲]

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See detailIMPACT OF IMAGE BRIGHTNESS REDUCTION ON PERCEIVED QUALITY OF 3D EXPERIENCE FOR 3D CINEMA SPECTATORS
Loock, Severin; Grogna, David ULiege; Jaspar, Mathieu ULiege et al

in International Conference on 3D Imaging (IC3D) (2017)

3D movies are calibrated to meet a certain screen bright- ness standard. Therefore, what would be the consequences on the quality of the 3D experience for spectators watching a 3D movie when movie ... [more ▼]

3D movies are calibrated to meet a certain screen bright- ness standard. Therefore, what would be the consequences on the quality of the 3D experience for spectators watching a 3D movie when movie theaters do not respect this standard? First, we attempted to better understand which factors were important for a spectator by conducting an experiment where participants watched a 3D movie and filled out an exploratory questionnaire. Then, we aimed to investigate the link between image brightness loss and the quality of the 3D experience as perceived by the spectator. First results show no perceived difference in the quality of the 3D experience between a nor- mal brightness and a brightness decreased by 10% for four factors, i.e. (1) the appreciation of the movie, (2) the con- tent of the movie, (3) the 3D quality of the movie, and (4) the quality of the 3D experience in general. [less ▲]

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See detailObjective assessment of visual pursuit in patients with disorders of consciousness: an exploratory study.
Wannez, Sarah ULiege; Hoyoux, Thomas; Langohr, Thomas et al

in Journal of Neurology (2017)

Detailed reference viewed: 28 (15 ULiège)
See detailAlgorithm for Temporal Gait Analysis Using Wireless Foot-Mounted Accelerometers
Boutaayamou, Mohamed ULiege; Denoël, Vincent ULiege; Bruls, Olivier ULiege et al

Book published by Springer (2017)

We present a new signal processing algorithm that extracts five gait events: heel strike, toe strike, heel-off, toe-off, and heel clearance from only two accelerometers attached on the heels of the ... [more ▼]

We present a new signal processing algorithm that extracts five gait events: heel strike, toe strike, heel-off, toe-off, and heel clearance from only two accelerometers attached on the heels of the subjects usual shoes. This algorithm first uses a continuous wavelet-based segmentation that parses the signal of consecutive strides into motionless periods defining relevant local acceleration signals. Then, the algorithm uses versatile techniques to accurately extract the five gait events from these local acceleration signals. We validated, on a stride-by-stride basis, the extraction of these gait events by comparing the results with reference data provided by a kinematic 3D analysis system and a video camera. The accuracy and precision achieved by the extraction algorithm for healthy subjects, the reduced number of accelerometer units required, and the validation results obtained, encourage us to further study this system in pathological conditions. [less ▲]

Detailed reference viewed: 84 (31 ULiège)
See detail3D and stereoscopy
Verly, Jacques ULiege; Grogna, David ULiege; Lejeune, Antoine ULiege

Conference given outside the academic context (2016)

Detailed reference viewed: 31 (2 ULiège)
See detailOUFTI-1 : comment les étudiants belges ont envoyé un satellite en orbite
Verly, Jacques ULiege; Kerschen, Gaëtan ULiege; Werner, Xavier ULiege et al

Conference given outside the academic context (2016)

Detailed reference viewed: 47 (6 ULiège)
See detail3D Stereo MEDIA 2016, an international event at the service of companies
Verly, Jacques ULiege

Scientific conference (2016, October 05)

Detailed reference viewed: 31 (6 ULiège)
See detailGoal of 3D Express and quick panorama of 3D
Verly, Jacques ULiege

Scientific conference (2016, October 05)

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See detailObjective drowsiness monitoring to assess fitness for duty
François, Clémentine ULiege; Hoyoux, Thomas ULiege; Langohr, Thomas ULiege et al

Poster (2016, September 16)

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See detailAnalysis of temporal gait features extracted from accelerometer-based signals during ambulatory walking in Parkinson’s disease
Boutaayamou, Mohamed ULiege; Demonceau, Marie ULiege; Bruls, Olivier ULiege et al

Poster (2016, June 21)

Objective: To perform a proof-of-concept study showing the utility of versatile algorithms aimed at objectively quantifying the duration of refined gait features during ambulatory walking in a patient ... [more ▼]

Objective: To perform a proof-of-concept study showing the utility of versatile algorithms aimed at objectively quantifying the duration of refined gait features during ambulatory walking in a patient with Parkinson’s disease (PD) in ON and OFF medication states as compared with an age-matched control subject. [less ▲]

Detailed reference viewed: 14 (2 ULiège)
See detailLa 3D : la technologie qui a changé l'histoire du monde
Verly, Jacques ULiege

Conference given outside the academic context (2016)

Detailed reference viewed: 26 (2 ULiège)