Results 271 to 280 of about 7,594,062 (311)

Temporal Feature Modulation for Video Watermarking

IEEE Transactions on Circuits and Systems for Video Technology, 2009
We propose two temporal feature modulation algorithms that extract a feature from each video frame and modulate the features for a series of frames to embed a watermark codeword. In the first algorithm, the existence of a frame is used as the frame feature, and a watermark codeword is embedded into the original video by skipping selected frames. In the
Young-Yoon Lee, Sang-Uk Park, Chang-Su Kim 0001, Sang-Uk Lee   +3 more
openaire   +1 more source

Spatio-temporal Good Features to Track

2013 IEEE International Conference on Computer Vision Workshops, 2013
This paper presents two fundamental contributions that can be very useful for any autonomous system that requires point correspondences for visual odometry. First, the Spatio-Temporal Monitor (STM) is an efficient method to identify good features to track by monitoring their spatiotemporal (x-y-t) appearance without any assumptions about motion or ...
Christoph Feichtenhofer, Axel Pinz
openaire   +1 more source

Temporal Parameters of the Feature Positive Effect

The American Journal of Psychology, 1979
Trial duration and intertrial interval duration were parametrically varied between groups of pigeons exposed to a discrimination involving the presence vs. the absence of a dot. Half the groups received the dot as the positive stimulus (feature positive groups) and half the groups received the dot as the negative stimulus (feature negative groups ...
G B, Nallan, G M, Pace, D F, McCoy, T R, Zentall   +3 more
openaire   +2 more sources

Calling activity and calls' temporal features inform about fish reproductive condition and spawning in three cultured Sciaenidae species

, 2020
Although many fish species are vocal, the use of fish sounds for aquaculture management and wild population protection has not received much attention.
M. Bolgan, Aurora Crucianelli, C. Mylonas, Séverine Henry, Jean-Claude Falguière, É. Parmentier   +5 more
semanticscholar   +1 more source

The Temporal Stability of Some Rorschach Features

Journal of Personality Assessment, 1978
One hundred nonpatient adults, screened for evidence of personality disorganization, were retested after a three-year interval to study the temporal consistency of the Rorschach. In general, the correlational analysis for 19 basic variables studied, and a directionality analysis for five ratios, illustrate a considerable sturdiness over time.
J E, Exner, G L, Armbruster, D, Viglione
openaire   +2 more sources

Temporal Robust Features for Violence Detection

2017 IEEE Winter Conference on Applications of Computer Vision (WACV), 2017
Automatically detecting violence in videos is paramount for enforcing the law and providing the society with better policies for safer public places. In addition, it may be essential for protecting minors from accessing inappropriate contents on-line, and for helping parents choose suitable movie titles for their children.
Daniel Moreira, Sandra Eliza Fontes de Avila, Mauricio Perez, Daniel Moraes, Vanessa Testoni, Eduardo Valle, Siome Goldenstein, Anderson Rocha 0001   +7 more
openaire   +1 more source

Temporal Feature Extraction from Temporal Information Systems

2003
We present a framework for new feature extraction from temporal information systems. Such systems provide information about behaviour of object(s) in time and state of an object is described by some attributes. We propose a modification of Apriori algorithm for frequent episode detection across many series.
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Hybrid VMD-CNN-GRU-based model for short-term forecasting of wind power considering spatio-temporal features

Engineering applications of artificial intelligence, 2023
Zeni Zhao, Sining Yun, Lingyun Jia, Jiaxin Guo, Yao Meng, Ning He, Xuejuan Li, Jiarong Shi, Liu Yang   +8 more
semanticscholar   +1 more source

Temporal Feature Space for Text Classification

2017
In supervised learning algorithms for text classification the text content is usually represented using the frequencies of the words it contains, ignoring their semantic and their relationships. Words within temporal expressions such as “ today ” or “ last February ” are particularly affected by this simplification: the same expression can have a ...
Stefano Giovanni Rizzo, Danilo Montesi
openaire   +1 more source

Contextual temporal features of the flash illusion

Proceedings of the ACM Symposium on Applied Perception, 2013
Simultaneous processing of pieces of information spread in space and/or in time depends on multiple factors [Chatterjee et al. 2011]. Studies regarding the effects of context on the visual target perception are generally addressing the spatial variables. For a deeper understanding of contextual effects in the temporal domain this study is aimed to gain
Péter Csibri, Péter Kaposvári, Gyula Sáry   +2 more
openaire   +1 more source