نتایج جستجو برای: gabor wavelet

تعداد نتایج: 42593  

Journal: :Cybersecurity: Education, Science, Technique 2020

2012
SAADAT NASEHI HOSSEIN POURGHASSEM

Feature extraction and accurate classification of the emotion-related EEG-characteristics have a key role in success of emotion recognition systems. In this paper, an optimal EEG-based emotion recognition algorithm based on spectral features and neural network classifiers is proposed. In this algorithm, spectral, spatial and temporal features are selected from the emotion-related EEG signals by...

2002
Ying-li Tian Takeo Kanade Jeffrey F. Cohn

Previous work suggests that Gabor-wavelet-based methods can achieve high sensitivity and specificity for emotionspecified expressions (e.g., happy, sad) and single action units (AUs) of the Facial Action Coding System (FACS). This paper evaluates a Gabor-wavelet-based method to recognize AUs in image sequences of increasing complexity. A recognition rate of 83% is obtained for three single AUs ...

2001
Chengjun Liu Harry Wechsler

This paper describes a novel Gabor Feature Class$er (GFC) method for face recognition. The GFC method employs an enhanced Fisher discrimination model on an augmented Gabor feature vector; which is derived from the Gabor wavelet transformation o f f i c e images. The Gabor wavelets, whose kernels are similar to the 2 0 receptive field profiles of the nianinialian cortical simple cells, exhibit d...

Journal: :EURASIP J. Adv. Sig. Proc. 2013
Yasuomi D. Sato Yasutaka Kuriya

We propose a multi-scale elastic graph matching (MS-EGM) algorithm for face detection, in which the conventional EGM is improved with two simple image processing techniques of the Gabor wavelet-based pyramid and the weak Gabor feature elimination. It is expected to solve difficulties of the real-time process in the conventional EGM. The Gabor wavelet-based pyramid effectively reduces not only t...

2001
Chibiao Chen Kap Luk Chan Chi-Fa Chen

In this paper, we employ a new adaptive basis of functions — brushlets for extracting texture properties. Brushlets are functions which are well localized with only one peak in the frequency domain. Hence, a representation of texture in terms of spatial frequency distributions can be constructed. The Brushlet features are used in texture image retrieval experiments to assess its effectiveness b...

Journal: :EURASIP J. Adv. Sig. Proc. 2010
Yingzi Du Craig Belcher Zhi Zhou

A new noncooperative iris recognition method is proposed. In this method, the iris features are extracted using a Gabor descriptor. The feature extraction and comparison are scale, deformation, rotation, and contrast-invariant. It works with off-angle and lowresolution iris images. The Gabor wavelet is incorporated with scale-invariant feature transformation (SIFT) for feature extraction to bet...

Journal: :IEEE Trans. Information Theory 2003
Karlheinz Gröchenig Augustus J. E. M. Janssen Norbert Kaiblinger Götz E. Pfander

Let g be a continuous, compactly supported function on R such that the integer translates of g constitute a partition of unity. We show that the Gabor system (g, a, b), with window g and time-shift and frequency-shift parameters a, b > 0 has no lower frame bound larger than 0 if b = 2, 3, . . . and a > 0. In particular, (g, a, b) is not a Gabor frame if g is a continuous, compactly supported wa...

2006
Zhi-Kai Huang De-Shuang Huang Ji-Xiang Du Zhong-Hua Quan Sheng-Bo Guo

This paper proposed a new method of extracting texture features based on Gabor wavelet. In addition, the application of these features for bark classification applying radial basis probabilistic network (RBPNN) has been introduced. In this method, the bark texture feature is firstly extracted by filtering the image with different orientations and scales filters, then the mean and standard devia...

2003
Alexander Mojaev Andreas Zell

This paper describes a real-time technique for scale invariant object or face tracking with standard PC hardware. The tracking method is based on a low redundancy (compressed) object image representation. For image decomposition a fast non-iterative transform based on the odd-symmetric gabor functions is used, which guarantees on the one hand a low redundancy of the resulting representation and...

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