Results 251 to 260 of about 6,627,236 (313)

Robust periodic motion and motion symmetry detection

Proceedings IEEE Conference on Computer Vision and Pattern Recognition. CVPR 2000 (Cat. No.PR00662), 2002
We describe a robust technique for detecting nonstationary periodic motion from a moving and static camera. We also describe a robust technique for discriminating motion symmetries (periodic motion classification), which we apply to classifying running humans (bipeds) and canines (quadrupeds). The system has been implemented to run in real-time (30 Hz)
Ross Cutler, Larry S. Davis
openaire   +1 more source

Periodic Motion Detection on Patient with Motion Disorders

2008 21st IEEE International Symposium on Computer-Based Medical Systems, 2008
The proposed method serves for detecting and analysing translating and non-translating periodic motion with small oscillation from video data. Periodic motion in a video sequence is detected using principles of motion accumulation. Non-translating periodic motion is described as change of the point brightness over the time. The trajectory of the motion
Zdenka Uhríková, Václav Hlavác
openaire   +1 more source

Cyclic motion detection for motion based recognition

Pattern Recognition, 1994
The motion of a walking person is analyzed by examining cycles in the movement. Cycles are detected using autocorrelation and Fourier transform techniques of the smoothed spatio-temporal curvature function of trajectories created by specific points on the object as it performs cyclic motion.
Ping-Sing Tsai, Mubarak Shah, Katharine Keiter, Takis Kasparis   +3 more
openaire   +3 more sources

Motion detection with nonstationary background

Machine Vision and Applications, 2002
This paper proposes a new background subtraction method for detecting moving foreground objects from a nonstationary background. While background subtraction has traditionally worked well for a stationary background, the same cannot be implied for a nonstationary viewing sensor.
Ying Ren, Chin-Seng Chua, Yeong-Khing Ho
openaire   +1 more source

All-in-one two-dimensional retinomorphic hardware device for motion detection and recognition

Nature Nanotechnology, 2021
Zhenhan Zhang, Shuiyuan Wang, Chunsen Liu, Runzhang Xie, Weida Hu, Peng Zhou   +5 more
semanticscholar   +1 more source

Human motion detection and tracking

SPIE Proceedings, 2017
Human behavior analysis in a video scene is based on motion feature extraction and recognition, many information is hidden behind gesture, sudden motion and walking, many research works tried to model and then recognize human behavior through motion analysis.
Neziha Jaouedi, Soumaya Zaghbani, Noureddine Boujnah, Mohamed Salim Bouhlel   +3 more
openaire   +1 more source

Polarization contrast and motion detection

Journal of Comparative Physiology A, 2006
Form and motion perception rely upon the visual system's capacity to segment the visual scene based upon local differences in luminance or wavelength. It is not clear if polarization contrast is a sufficient basis for motion detection. Here we show that crayfish optomotor responses elicited by the motion of images derived from spatiotemporal variations
Raymon M, Glantz, John P, Schroeter
openaire   +2 more sources

An Anti‐Swellable Hydrogel Strain Sensor for Underwater Motion Detection

Advanced Functional Materials, 2021
Jiayuan Ren, Yanhui Liu, Zengqiang Wang, Siqi Chen, Yifan Ma, Hua Wei, Shaoyu Lü   +6 more
semanticscholar   +1 more source

The optimal displacement for the detection of motion

Vision Research, 1990
The optimal spatial displacement for the detection of motion by the human visual system was investigated using spatially narrow band stimuli. Direction discrimination was used for abruptly displaced stimuli. An optimal spatial displacement was found for the detection of motion and this bore a characteristic relationship to the spatial wavelength of the
J C, Boulton, R F, Hess
openaire   +2 more sources

Motion anisotropies and heading detection

Biological Cybernetics, 1995
In motion-processing areas of the visual cortex in cats and monkeys, an anisotropic distribution of direction selectivities displays a preference for movements away from the fovea. This 'centrifugal bias' has been hypothetically linked to the processing of optic flow fields generated during forward locomotion.
Markus Lappe, Josef P. Rauschecker
openaire   +2 more sources