Results 271 to 280 of about 109,170 (315)
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Affine invariant shape descriptors: The ICA-Fourier descriptor and the PCA-Fourier descriptor
2008 19th International Conference on Pattern Recognition, 2008In this paper, we propose two new affine invariant shape descriptors, the ICA-Fourier descriptor and the PCA-Fourier descriptor. We tested the descriptors by using them as features for shape based silhouette image retrieval. Experiments on a 1000 silhouette image database show promising retrieval rates of 95.41% and 93.63%, using the ICA-Fourier ...
Ye Mei, Dimitrios Androutsos
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2016
Despite the number of available chemicals growing exponentially, testing of their toxicological and environmental behavior is often a critical issue and alternative strategies are required. Additionally, there is the need to predict properties of not yet synthesized compounds to reduce the costs of synthesis, selecting only those that have the maximal ...
Mauri, A +2 more
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Despite the number of available chemicals growing exponentially, testing of their toxicological and environmental behavior is often a critical issue and alternative strategies are required. Additionally, there is the need to predict properties of not yet synthesized compounds to reduce the costs of synthesis, selecting only those that have the maximal ...
Mauri, A +2 more
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The Dimensionality Of Psychopathology Descriptors
Multivariate Behavioral Research, 1981This study identified five stable dimensions that judges utilized in making similarity judgments of a set of 26 psychopathology descriptors from a diverse domain representing traditional psychopathology descriptions such as lay labels, and diagnostic categories from the second edition of the Diagnostic and Statistical Manual (DSM II), as well as ...
M J, Paquin, D N, Jackson
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International Journal of Systems Science, 1999
A unifying framework of steady-state Kalman filtering, smoothing and prediction for descriptor systems is presented by using the innovation analysis method in the time domain. The descriptor Kalman estimators are presented on the basis of the autoregressive moving-average innovation model and white-noise estimators.
Zi-Li Deng, Yu-Mei Liu
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A unifying framework of steady-state Kalman filtering, smoothing and prediction for descriptor systems is presented by using the innovation analysis method in the time domain. The descriptor Kalman estimators are presented on the basis of the autoregressive moving-average innovation model and white-noise estimators.
Zi-Li Deng, Yu-Mei Liu
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Descriptor systems approximation
International Journal of General Systems, 2004Two singular value decomposition (SVD)-based techniques to construct different types of lower degree approximants of a singular system are presented. Such techniques enable preservation of the key properties of the original system, such as stability, and give a quantization of approximation error.
Amel B. H. Adamou-Mitiche +2 more
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Rethinking the sGLOH Descriptor
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2018sGLOH (shifting GLOH) is a histogram-based keypoint descriptor that can be associated to multiple quantized rotations of the keypoint patch without any recomputation. This property can be exploited to define the best distance between two descriptor vectors, thus avoiding computing the dominant orientation.
Fabio Bellavia, Carlo Colombo
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Computer Vision, Graphics, and Image Processing, 1986
A new fast shape descriptor, based upon the rapid transformation of Reitboeck and Brody, is presented. The normalized rapid descriptors (NRD) developed here and normalized Fourier descriptors (NFD) are applied to the analyses of some typical 2D images. It is shown that they both have good recognition performance.
Jun Ma, Chengke Wu 0001, Xin-Ru Lu
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A new fast shape descriptor, based upon the rapid transformation of Reitboeck and Brody, is presented. The normalized rapid descriptors (NRD) developed here and normalized Fourier descriptors (NFD) are applied to the analyses of some typical 2D images. It is shown that they both have good recognition performance.
Jun Ma, Chengke Wu 0001, Xin-Ru Lu
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2001 IEEE Fourth Workshop on Multimedia Signal Processing (Cat. No.01TH8564), 2002
Motion features play an important role in video retrieval. We propose three new motion features that describe the local motion of arbitrarily shaped video objects. The proposed descriptors are based on the angular and circular area variances of the video object, the variances of the angular radial transform coefficients of the object's area, and the ...
Berna Erol, Faouzi Kossentini
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Motion features play an important role in video retrieval. We propose three new motion features that describe the local motion of arbitrarily shaped video objects. The proposed descriptors are based on the angular and circular area variances of the video object, the variances of the angular radial transform coefficients of the object's area, and the ...
Berna Erol, Faouzi Kossentini
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IEEE Transactions on Circuits and Systems for Video Technology, 2001
This paper presents an overview of color and texture descriptors that have been approved for the Final Committee Draft of the MPEG-7 standard. The color and texture descriptors that are described in this paper have undergone extensive evaluation and development during the past two years.
B. S. Manjunath +3 more
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This paper presents an overview of color and texture descriptors that have been approved for the Final Committee Draft of the MPEG-7 standard. The color and texture descriptors that are described in this paper have undergone extensive evaluation and development during the past two years.
B. S. Manjunath +3 more
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Journal of Mathematical Chemistry, 2010
In this paper, we introduce the one-two descriptor. The one-two descriptors is the sum of the vertex contributions such that each pendant vertex contributes 1, each vertex of degree two adjacent to pendant vertex contributes 2, and each vertex of degree higher than two also contributes 2.
Vukičević, Damir +6 more
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In this paper, we introduce the one-two descriptor. The one-two descriptors is the sum of the vertex contributions such that each pendant vertex contributes 1, each vertex of degree two adjacent to pendant vertex contributes 2, and each vertex of degree higher than two also contributes 2.
Vukičević, Damir +6 more
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