363 citations · 1.8k across the 74 of their papers we have counts for
73 papers · 1 filter
Hand Geometry Based Recognition with a MLP Classifier
Marcos Faundez-Zanuy, Miguel A. Ferrer-Ballester, Carlos M. Travieso-González +1
This paper presents a biometric recognition system based on hand geometry. We describe a database specially collected for research purposes, which consists of 50 people and 10 diff…
Face recognition with small and large size databases
Josep roure-Alcobé, Marcos Faundez-Zanuy
This paper presents experimental results using the ORL (40 people) and FERET (994 people) databases. The ORL database can be useful for securing applications where few users attemp…
Biometric verification of humans by means of hand geometry
Marcos Faundez-Zanuy
This paper describes a hand geometry biometric identification system. We have acquired a database of 22 people, 10 acquisitions per person, using a conventional document scanner. W…
Study of a committee of neural networks for biometric hand-geometry recognition
Marcos Faundez-Zanuy
This Paper studies different committees of neural networks for biometric pattern recognition. We use the neural nets as classifiers for identification and verification purposes. We…
Biometric identification by means of hand geometry and a neural net classifier
Marcos Faundez-Zanuy, Guillermo Mar Navarro Mérida
This Paper describes a hand geometry biometric identification system. We have acquired a database of 22 people using a conventional document scanner. The experimental section consi…
A New Nonlinear speaker parameterization algorithm for speaker identification
Mohamed Chetouani, Marcos Faundez-Zanuy, Bruno Gas +1
In this paper we propose a new parameterization algorithm based on nonlinear prediction, which is an extension of the classical LPC parameters. The parameters performances are esti…
Face recognition in a transformed domain
Marcos Faundez-Zanuy
This paper proposes the use of a discrete cosine transform (DCT) instead of the eigenfaces method (Karhunen-Loeve Transform) for biometric identification based on frontal face imag…
What can predictive speech coders learn from speaker recognizers?
Marcos Faundez-Zanuy
This paper compares the speech coder and speaker recognizer applications, showing some parallelism between them. In this paper, some approaches used for speaker recognition are app…
Non-Linear Speech coding with MLP, RBF and Elman based prediction
Marcos Faundez-Zanuy
In this paper we propose a nonlinear scalar predictor based on a combination of Multi Layer Perceptron, Radial Basis Functions and Elman networks. This system is applied to speech…
Nonlinear Vectorial Prediction with Neural Nets
Marcos Faundez-Zanuy
In this paper we propose a nonlinear vectorial prediction scheme based on a Multi Layer Perceptron. This system is applied to speech coding in an ADPCM backward scheme. In addition…
On The Model Size Selection For Speaker Identification
Marcos Faundez-Zanuy
In this paper we evaluate the relevance of the model size for speaker identification. We show that it is possible to improve the identification rates if a different model size is u…
Face identification by means of a neural net classifier
Virginia Espinosa-Duro, Marcos Faundez-Zanuy
This paper describes a novel face identification method that combines the eigenfaces theory with the Neural Nets. We use the eigenfaces methodology in order to reduce the dimension…
Adaptive hybrid speech coding with a MLP LPC structure
Marcos Faundez-Zanuy
In the last years there has been a growing interest for nonlinear speech models. Several works have been published revealing the better performance of nonlinear techniques, but lit…
A comparative study between linear and nonlinear speech prediction
Marcos Faundez-Zanuy, Enric Monte, Francesc Vallverdú
This paper is focused on nonlinear prediction coding, which consists on the prediction of a speech sample based on a nonlinear combination of previous samples. It is known that in…
Preliminary experiments on thermal emissivity adjustment for face images
Marcos Faundez-Zanuy, Xavier Font Aragones, Jiri Mekyska
In this paper we summarize several applications based on thermal imaging. We emphasize the importance of emissivity adjustment for a proper temperature measurement. A new set of fa…
Contribution of the Temperature of the Objects to the Problem of Thermal Imaging Focusing
Virginia Espinosa-Duró, Marcos Faundez-Zanuy, Jiri Mekyska
When focusing an image, depth of field, aperture and distance from the camera to the object, must be taking into account, both, in visible and in infrared spectrum. Our experiments…
A Naturalistic Database of Thermal Emotional Facial Expressions and Effects of Induced Emotions on Memory
Anna Esposito, Vincenzo Capuano, Jiri Mekyska +1
This work defines a procedure for collecting naturally induced emotional facial expressions through the vision of movie excerpts with high emotional contents and reports experiment…
Face segmentation: A comparison between visible and thermal images
Jiri Mekyska, Virginia Espinosa-Duró, Marcos Faundez-Zanuy
Face segmentation is a first step for face biometric systems. In this paper we present a face segmentation algorithm for thermographic images. This algorithm is compared with the c…
Reliability and Validity of the Polar V800 Sports Watch for Estimating Vertical Jump Height
Manuel-Vicente Garnacho-Castaño, Marcos Faundez-Zanuy, Noemi Serra-Payá +3
This study aimed to assess the reliability and validity of the Polar V800 to measure vertical jump height. Twenty-two physically active healthy men (age: 22.89 +- 4.23 years; body…
On handwriting pressure normalization for interoperability of different acquisition stylus
Marcos Faundez-Zanuy, Olga Brotons-Rufes, Carles Paul-Recarens +1
In this paper, we present a pressure characterization and normalization procedure for online handwritten acquisition. Normalization process has been tested in biometric recognition…
On the Handwriting Tasks' Analysis to Detect Fatigue
Manuel-Vicente Garnacho-Castaño, Marcos Faundez-Zanuy, Josep Lopez-Xarbau
Practical determination of physical recovery after intense exercise is a challenging topic that must include mechanical aspects as well as cognitive ones because most of physical s…
Wide band sub-band speech coding using nonlinear prediction
Marcos Faundez-Zanuy
We compare a wide band sub-band speech coder using ADPCM schemes with linear prediction against the same scheme with nonlinear prediction based on multi-layer perceptrons. Exhausti…
A new subband non linear prediction coding algorithm for narrowband speech signal: The nADPCMB MLT coding scheme
Guido D'Alessandro, Marcos Faundez Zanuy, Francesco Piazza
This paper focuses on a newly developed transparent nADPCMB MLT speech coding algorithm. Our coder first decomposes the narrowband speech signal in subbands, a non linear ADPCM sch…
A combination between VQ and covariance matrices for speaker recognition
Marcos Faundez-Zanuy
This paper presents a new algorithm for speaker recognition based on the combination between the classical Vector Quantization (VQ) and Covariance Matrix (CM) methods. The combined…