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Found 63 papers, 0 papers with code
Handwriting and Drawing for Depression Detection: A Preliminary Study
The aim of this study is to use a new tool, the online handwriting and drawing analysis, to discriminate between healthy individuals and depressed patients.
Prodromal Diagnosis of Lewy Body Diseases Based on the Assessment of Graphomotor and Handwriting Difficulties
To this date, studies focusing on the prodromal diagnosis of Lewy body diseases (LBDs) based on quantitative analysis of graphomotor and handwriting difficulties are missing.
Exploration of Various Fractional Order Derivatives in Parkinson's Disease Dysgraphia Analysis
Therefore, in this study, we follow up on our previous research, and we aim to explore the utilization of various approaches of fractional order derivative (FD) in the analysis of PD dysgraphia.
Face recognition with small and large size databases
This paper presents experimental results using the ORL (40 people) and FERET (994 people) databases.
Biometric verification of humans by means of hand geometry
This paper describes a hand geometry biometric identification system.
Hand Geometry Based Recognition with a MLP Classifier
This paper presents a biometric recognition system based on hand geometry.
Study of a committee of neural networks for biometric hand-geometry recognition
This Paper studies different committees of neural networks for biometric pattern recognition.
Biometric identification by means of hand geometry and a neural net classifier
This Paper describes a hand geometry biometric identification system.
Face recognition in a transformed domain
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 images.
Face identification by means of a neural net classifier
This paper describes a novel face identification method that combines the eigenfaces theory with the Neural Nets.
Contributions to interframe coding
Advanced motion models (4 or 6 parameters) are needed for a good representation of the motion experimented by the different objects contained in a sequence of images.
Contribution of the Temperature of the Objects to the Problem of Thermal Imaging Focusing
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.
Preliminary experiments on thermal emissivity adjustment for face images
In this paper we summarize several applications based on thermal imaging.
A Naturalistic Database of Thermal Emotional Facial Expressions and Effects of Induced Emotions on Memory
This work defines a procedure for collecting naturally induced emotional facial expressions through the vision of movie excerpts with high emotional contents and reports experimental data ascertaining the effects of emotions on memory word recognition tasks.
Face segmentation: A comparison between visible and thermal images
Face segmentation is a first step for face biometric systems.
On the Handwriting Tasks' Analysis to Detect Fatigue
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 sport activities, as well as professional activities (including brain computer interface-operated systems), require good shape in both of them.
On handwriting pressure normalization for interoperability of different acquisition stylus
In this paper, we present a pressure characterization and normalization procedure for online handwritten acquisition.
Reliability and Validity of the Polar V800 Sports Watch for Estimating Vertical Jump Height
There was almost perfect agreement between the Polar V800 compared to a force platform for the SJ and CMJ tests (Mean ICCs = 0. 95; no systematic bias +- random errors in SJ mean: -0. 38 +- 2. 10 cm, p > 0. 05).
Fast on-line signature recognition based on VQ with time modeling
Experimental results with MCYT provide a 99. 76% identification rate and 2. 46% EER (skilled forgeries and individual threshold).
Multi-class versus One-class classifier in spontaneous speech analysis oriented to Alzheimer Disease diagnosis
Most of medical developments require the ability to identify samples that are anomalous with respect to a target group or control group, in the sense they could belong to a new, previously unseen class or are not class data.
Perceptual Features as Markers of Parkinson's Disease: The Issue of Clinical Interpretability
Up to 90% of patients with Parkinson's disease (PD) suffer from hypokinetic dysathria (HD) which is also manifested in the field of phonation.
Selection of entropy based features for the analysis of the Archimedes' spiral applied to essential tremor
Biomedical systems are regulated by interacting mechanisms that operate across multiple spatial and temporal scales and produce biosignals with linear and non-linear information inside.
Contribution of Different Handwriting Modalities to Differential Diagnosis of Parkinson's Disease
We show that pressure and in-air movement also possess information that is relevant for the diagnosis of Parkinson's Disease (PD) from handwriting.
Identification of Hypokinetic Dysarthria Using Acoustic Analysis of Poem Recitation
In this work, we analysed the power of conventional speech features quantifying imprecise articulation, dysprosody, speech dysfluency and speech quality deterioration extracted from a specialized poem recitation task to discriminate dysarthric and healthy speech.
Gender classification by means of online uppercase handwriting: A text-dependent allographic approach
Although in this case results are not conclusive, an outstanding average of 74% of well classified writers is obtained when information from pen-up strokes is combined with information from pen-down ones.
Multi-focus thermal image fusion
To the best of our knowledge, this is the first work devoted to multi-focus thermal image fusion.
On the focusing of thermal images
In this paper we present a new thermographic image database suitable for the analysis of automatic focus measures.
Preliminary experiments on automatic gender recognition based on online capital letters
In this paper we present some experiments to automatically classify online handwritten text based on capital letters.
A multimodal approach for Parkinson disease analysis
Parkinson's disease (PD) is the second most frequent neurodegenerative disease with prevalence among general population reaching 0. 1-1 %, and an annual incidence between 1. 3-2. 0/10000 inhabitants.
Speaker Identification Experiments Under Gender De-Identification
The present work is based on the COST Action IC1206 for De-identification in multimedia content.
HAIDA: Biometric technological therapy tools for neurorehabilitation of Cognitive Impairment
Dementia, and specially Alzheimer s disease (AD) and Mild Cognitive Impairment (MCI) are one of the most important diseases suffered by elderly population.
A Preliminary Study on Aging Examining Online Handwriting
This paper contributes to this research line analyzing a selected set of online handwriting parameters provided by a healthy group of population aged from 18 to 70 years.
Digital Speech Algorithms for Speaker De-Identification
The present work is based on the COST Action IC1206 for De-identification in multimedia content.
Speaker recognition by means of a combination of linear and nonlinear predictive models
This paper deals the combination of nonlinear predictive models with classical LPCC parameterization for speaker recognition.
A comparative study of several ADPCM schemes with linear and nonlinear prediction
In this paper we compare several ADPCM schemes with nonlinear prediction based on neural nets with the classical ADPCM schemes based on several linear prediction schemes.
Non-linear predictive vector quantization of speech
In this paper we propose a Non-Linear Predictive Vector quantizer (PVQ) for speech coding, based on Multi-Layer Perceptrons.
On the relevance of language in speaker recognition
This paper presents a new database collected from a bilingual speakers set (49), in two different languages: Spanish and Catalan.
Nonlinear predictive models computation in ADPCM schemes
Recently several papers have been published on nonlinear prediction applied to speech coding.
Speech segmentation using multilevel hybrid filters
A novel approach for speech segmentation is proposed, based on Multilevel Hybrid (mean/min) Filters (MHF) with the following features: An accurate transition location.
A comparative study of several parameterizations for speaker recognition
This paper presents an exhaustive study about the robustness of several parameterizations, in speaker verification and identification tasks.
ADPCM with nonlinear prediction
Many speech coders are based on linear prediction coding (LPC), nevertheless with LPC is not possible to model the nonlinearities present in the speech signal.
N-dimensional nonlinear prediction with MLP
In this paper we propose a Non-Linear Predictive Vector quantizer (PVQ) for speech coding, based on Multi-Layer Perceptrons.
Interblock redundancy reduction using QUADTREES
This paper applies the quadtree structure for image coding.
Applying multi-angled parallelism to Spanish topographical maps
Multi-Angled Parallelism (MAP) is a method to recognize lines in binary images.
On the relevance of bandwidth extension for speaker identification
In this paper we discuss the relevance of bandwidth extension for speaker identification tasks.
A new face database simultaneously acquired in visible, near infrared and thermal spectrum
In this paper we present a new database acquired with three different sensors (visible, near infrared and thermal) under different illumination conditions.
Handwriting Biometrics: Applications and Future Trends in e-Security and e-Health
Background- This paper summarizes the state-of-the-art and applications based on online handwritting signals with special emphasis on e-security and e-health fields.
The effect of fatigue on the performance of online writer recognition
For each fatigue level, the identification and verification performance of these methods is measured.
Online handwriting, signature and touch dynamics: tasks and potential applications in the field of security and health
Background: An advantageous property of behavioural signals , e. g. handwriting, in contrast to morphological ones, such as iris, fingerprint, hand geometry, etc., is the possibility to ask a user for a very rich amount of different tasks.
EMOTHAW: A novel database for emotional state recognition from handwriting
We use this ranking process to identify the features which best reveal a targeted emotional state.
State-of-the-art in speaker recognition
Recent advances in speech technologies have produced new tools that can be used to improve the performance and flexibility of speaker recognition While there are few degrees of freedom or alternative methods when using fingerprint or iris identification techniques, speech offers much more flexibility and different levels for performing recognition: the system can force the user to speak in a particular manner, different for each attempt to enter.
Biometric security technology
This paper presents an overview of the main topics related to biometric security technology, with the main purpose to provide a primer on this subject.
Testing report of a fingerprint-based door-opening system
This paper describes the operational evaluation of a door-opening system based on a low-cost inkless fingerprint sensor.
Privacy issues on biometric systems
In the XXIth century there is a strong interest on privacy issues.
A modification of the conjugate direction method for motion estimation
The performance of block matching methods has been measured in terms of the entropy in the error signal between the motion compensated and the original frames.
A comparative study of in-air trajectories at short and long distances in online handwriting
Methods In this paper, we will analyze a large set of databases (BIOSECURID, EMOTHAW, PaHaW, Oxygen-Therapy and SALT), which contain a total amount of 663 users and 17951 files.
On-line signature verification system with failure to enroll managing
This context corresponds to a real operation, where a new user tries to enroll an existing system and must be automatically guided by the system in order to detect the failure to enroll situations.
Thermal hand image segmentation for biometric recognition
In this paper we present a method to identify people by means of thermal (TH) and visible (VIS) hand images acquired simultaneously with a TESTO 882-3 camera.
Technological evaluation of two AFIS systems
This paper provides a technological evaluation of two Automatic Fingerprint Identification Systems (AFIS) used in forensic applications.
Biometric recognition: why not massively adopted yet?
Although there has been a dramatically reduction on the prices of capturing devices and an increase on computing power in the last decade, it seems that biometric systems are still far from massive adoption for civilian applications.
Speaker recognition improvement using blind inversion of distortions
In this paper we propose the inversion of nonlinear distortions in order to improve the recognition rates of a speaker recognizer system.
Speech watermarking: an approach for the forensic analysis of digital telephonic recordings
In this article, the authors discuss the problem of forensic authentication of digital audio recordings.
BiosecurID: a multimodal biometric database
A new multimodal biometric database, acquired in the framework of the BiosecurID project, is presented together with the description of the acquisition setup and protocol.
