Multimodal biometric systems have been subject of study in recent decades, theirunique characteristic of Anti spoofing and liveness detection plus ability to deal withaudio noise made them technology candidates for improving current systems such asvoice recognition, verification and identification systems.In this work we studied feasibility of incorporating audio-visual voice recognitionsystem for dealing with audio noise in the truck cab environment. Speech recognitionsystems suffer from excessive noise from the engine and road traffic and cars stereosystem. To deal with this noise different techniques including active and passive noisecancelling have been studied.Our results showed that although audio-only systems are performing better in noisefree environment their performance drops significantly by increase in the level of noisein truck cabins, which by contrast does not affect the performance of visual features.Final fused system comprising both visual and audio cues, proved to be superior toboth audio-only and video-only systems.

Abstract The aim of this study was to define distinct craniofacial features in subjects with nonsyndromic cleft lip and palate (CLP) and in subjects with Turner syndrome (TS), and to evaluate the resemblance of these features among their family members. This might help in elucidating if there is a parental contribution to possible predisposing craniofacial features in cleft subjects and to the severity of certain distinct craniofacial features in subjects with X chromosome monosomy. The study population consisted of 29 Costa Rican CLP families including unaffected parents and siblings, and of 71 TS (45,X) subjects and members of their families. Based on lateral and frontal cephalometric analyses, cleft family members were characterized by reduced cranial height and head width, greater interorbital and nasal cavity widths, shorter anterior cranial base and palatal lengths, and shorter total face height compared to control values. With respect to these distinct craniofacial features, there were statistically significant associations in anterior cranial base and palatal length, and head, forehead and outer interorbital width measurements between parents and their children with CLP. The sidedness of the cleft in affected children was related to the asymmetry of the nasal cavity width in their parents. The distinct craniofacial features of the TS subjects, such as short clivus, retrognathic position of mandible, and narrow maxilla at the level of first premolars were related to their mothers' corresponding features. The presence of lateral palatine ridges, which were detected in one third of the TS subjects, was related to the narrowness of the posterior palate rather than to the variation in the tongue position. Distinct craniofacial features segregate in cleft family members. The several significant associations in distinct craniofacial dimensions between parents and children with CLP emphasize the importance of genetic factors in the genesis of nonsyndromic orofacial clefting. The present results support the concept that maternal factors contribute to the degree of deficiency in the growth of the cranial base and to the magnitude of mandibular retrognathism of their daughters with TS. Maternal influences may also modify the width of the palate in TS.

Orientadores: Ricardo Della Coletta, Hercilio Martelli Junior / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba / Made available in DSpace on 2018-08-27T01:12:26Z (GMT). No. of bitstreams: 1 Machado_RenatoAssis_M.pdf: 2319116 bytes, checksum: 2480e205308914fde4162ec2f1c7c657 (MD5) Previous issue date: 2015 / Resumo: O desenvolvimento craniofacial envolve uma série de eventos altamente coordenados e variações polimórficas nos genes que controlam estes eventos podem afetar a morfogênese labial e palatina, resultando nas fissuras do lábio e/ou palato não-sindrômicas (FL/PNS). O objetivo do presente estudo foi verificar a associação dos polimorfismos em genes relacionados ao desenvolvimento craniofacial, HOXD1 (rs1374326), TNP1 (rs748044), MSX1 (rs1106514), TCOF1 (rs15251, rs2569062, rs28372960), FGFR1 (rs7829058), COL2A1 (rs1793949), WNT3 (rs11653738) e TIMP3 (rs242082), na susceptibilidade das FL/PNS em uma população brasileira. Para verificar a associação destes polimorfismos, este estudo associou o teste de desequilíbrio de transmissão (TDT) com a análise caso-controle com correção de variações genéticas de ancestralidade em uma amostra composta de 189 trios com fissura labial com ou sem fissura palatina não-sindrômica (FL±PNS), 107 trios com fissura palatina não-sindrômica (FPNS), 318 amostras isoladas de pacientes com FL±PNS, 189 amostras isoladas de pacientes com FPNS e 599 controles. Todos os polimorfismos foram inicialmente analisados por TDT e as associações significantes foram confirmadas na análise caso-controle. Os polimorfismos rs28372960 e rs7829058 foram transmitidos de maneira significante dos genitores para os pacientes com FL±PNS (p=0,04), assim como os polimorfismos rs1374326 e rs11653738 nos trios com FPNS (p=0,04). Contudo, o estudo caso-controle não confirmou tais associações. O haplótipo C-C-T formado pelos polimorfismos rs15251, rs2569062 e rs28372960 no gene TCOF1 foi significantemente mais comum nos pacientes com FL±PNS em comparação com o grupo controle (p=0,01). Frente as modestas associações, nossos resultados não suportam a hipótese de que variantes estudadas nos genes HOXD1, TNP1, MSX1, TCOF1, FGFR1, COL2A1, WNT3 e TIMP3 são fatores de risco para FL/PNS em uma população brasileira / Abstract: The craniofacial development involves a series of highly coordinated events, and polymorphic variations in genes that control these events can affect the morphogenesis of the lip and palate, resulting in the non-syndromic cleft lip and/or palate (NSCL/P). The aim of present study was to verify the association of polymorphisms in genes related to craniofacial development, HOXD1 (rs1374326), TNP1 (rs748044), MSX1 (rs1106514), TCOF1 (rs15251, rs2569062, rs28372960), FGFR1 (rs7829058), COL2A1 (rs1793949), WNT3 (rs11653738) and TIMP3 (rs242082), in the susceptibility of NSCL/P in a Brazilian population. To verify the association of those polymorphisms, the study associated the transmission disequilibrium test (TDT) and a structured case-control analysis based on the individual ancestry proportions in a sample composed of 189 case-parent trios of non-syndromic cleft lip with or without cleft palate (NSCL±P), 107 case-parent trios of non-syndromic cleft palate (NSCP), 318 isolated samples of NSCL±P, 189 isolated samples of NSCP and 599 healthy controls. All polymorphisms were initially evaluated by TDT, and significant associations were valitaded in a case-control analysis. A significant overtransmission of rs28372960 and rs7829058 polymorphisms in NSCL±P trios was observed (p=0.04), as well as the rs1374326 and rs11653738 polymorphisms in NSCP trios (p=0.04). However, the structured case-control analysis did not confirm those associations. The haplotype C-C-T formed by rs15251, rs2569062 and rs28372960 polymorphisms in TCOF1 gene was significantly more frequent in patients with NSCL±P in comparison with the control group (p=0.01). With the modest associations, our results do not support the hypothesis that HOXD1, TNP1, MSX1, TCOF1, FGFR1, COL2A1, WNT3 and TIMP3 variants are risk factors for NSCL/P in a Brazilian population / Mestrado / Patologia / Mestre em Estomatopatologia

A tecnologia tem estado presente cada vez mais no dia-a-dia e trouxe avanços notáveis para a área de visão computacional. Uma das áreas de visão, a detecção de características humanas, sempre foi importante para tarefas de reconhecimento, vigilância, controle e outras. Há um grande potencial de uso na área de acessibilidade, podendo ser benéfica para um grupo de pessoas com necessidades especiais, para proporcionar uma maior interação com o ambiente e com as pessoas. Uma dessas características, os lábios, é útil para o reconhecimento visual e/ou auditivo da fala e pode ser usada para aplicações em acessibilidade de deficientes auditivos e surdos, como por exemplo para a leitura labial. Com a crescente popularização dos dispositivos móveis e avanços no hardware, além do custo cada vez mais acessível, torna-se possível a implementação de métodos rápidos e eficientes para detecção e seu posterior rastreamento. Assim, é possível o uso em tempo real nos dispositivos móveis. Esta dissertação descreve um sistema desenvolvido para a detecção e rastreamento da região dos lábios nesse contexto. A detecção da região dos lábios é feita pelo algoritmo de Viola-Jones, com o diferencial do uso de conjuntos de imagens sintéticas para o treinamento e geração do detector proposto. O rastreamento é baseado no Camshift com modificações, um método de rastreamento de objeto por kernel. A implementação é descrita em detalhes e são mostrados resultados obtidos por sequências gravadas em um dispositivo móvel. As sequências são capturadas em uma configuração não frontal, o que pode ser útil em aplicações específicas. Métricas baseadas no número de acertos, de erros e de falsos positivos são usadas para avaliar os resultados, além da taxa de quadros por segundo. / Technology has been increasingly present and brought remarkable advances in the computer vision area. One of such areas, the detection and analysis of human behaviour, has been important for tasks of recognition, surveillance, control, and others. There is great potential for use in the area of accessibility, and it may benefit a group of people with special needs, to provide greater interaction with the environment and with people. Facial feature detection plays a central role in this context. One of these features, the lips, is useful for speech recognition and can be used for applications in accessibility of deaf and hearing impaired, such as for lip reading. With the growing popularity of mobile devices and advances in hardware, as well as more affordable costs, it becomes possible to implement rapid and reliable methods for lip detection and subsequent tracking. So it is possible the real-time use of mobile devices. This thesis describes a system developed for the detection and tracking lips region in this context. The detection of the lips region is carried out by the Viola-Jones algorithm, but with the use of sets of synthetic images for the detector training and generation. Tracking is based on Camshift with modifications, a kernel-based object tracking method. The implementation is described in details and results are shown from sequences recorded on a mobile device. The sequences are not captured on a frontal configuration, which may be useful in specific applications. Performance assessment in terms of metrics based on number of hits, errors and false positives are used to evaluate the results, in addition to the frame rate per second.

This study investigated the efficacy of a parent questionnaire as a component for screening early language development of children 16 to 30 months of age with cleft lip and palate. Thirty nonsyndromic children with cleft lip and palate and 30 children without clefts received the MacArthur Communicative Development Inventory: Toddler (CDI:Toddler), administered by a pediatrician. In addition, a speech-language screening was performed by a speech-language pathologist. Results of the two assessments indicated that the CDI:Toddler was a valid screener of language development when compared with a comprehensive speech-language screening. Language and speech characteristics of the subject populations are discussed. In particular, differences between the cleft and noncleft groups demonstrated evidence of delays in expressive language development in the children with cleft lip and palate.

This study examined the effects of a vocabulary intervention for 3 children with cleft lip and/or palate who showed limited consonant inventories and delayed expressive language. In a multiple baseline design across behaviors, a vocabulary intervention was implemented using a milieu model. The treatment produced an increase in vocabulary production that generalized to a conversational language sample in the clinic and home as reported by parents. Phonological variables, including consonant repertoire and syllable structure, were monitored before and after language treatment for all children. Phonological performance improved and did not need to be addressed as a separate goal in intervention.

Persistent lip swelling can be a diagnostic challenge. We report an unusual case of lip edema in the setting of lip surgery 30 years before presentation and because of retained foreign material. This case highlights the importance of accurate historical information and aggressive diagnostic methods in assessing persistent lip swelling.

Indiana University-Purdue University Indianapolis (IUPUI) / Obturator therapy has been proposed for many years as an aid in maxillary orthopedics for the complete unilateral cleft lip and palate infant. The obturator appliance had the added benefit of providing a false palate against which the infant can suckle. This has aided in the feeding of these infants to assure adequate nutrition with the least effort for parent and child. The current study assessed three aspects of obturator therapy at James Whitcomb Riley Hospital for Children, Indianapolis, Indiana. Parental evaluations of the obturator proved to be very positive. Almost all parents (96%) rated it as beneficial and would recommend its use to other parents with cleft lip and palate infants. Weight gain analysis over the first nine months of life demonstrated that these infants were only slightly below the average for birth weight. At three and nine months of age, a number (69% and 56% respectively) had maintained their original weight percentile rankings or had just dropped into the next lower category. Thus, many of the infants were able to achieve adequate nutrition, a problem noted by many authors when obturator therapy was not used. It should be emphasized that each infant underwent either one or two major surgical procedures during this time period. Arch symmetry assessments at one, four and ten months showed a gradual reduction in lateral posterior crossbite, canine crossbite, and anterior crossbite tendency. Although the arches still showed some collapse at the end of ten months of age, the pattern was much better than at initial presentation with values much closer to normal. Improvements in arch symmetry was expected as the maxilla grew. From the results of this study, obturator therapy appears to be beneficial in maxillary orthopedics by helping to maintain adequate weight gain and gain parental acceptance.

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