Desenvolvimento e validação geométrica de um sistema para mapeamento com câmeras digitais de médio formato

Pós-graduação em Ciências Cartográficas - FCT

Analise da postura pela fotogrametria em escolares

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Extração automática de cruzamentos simples e complexos de rodovias em imagens digitais de alta resolução

Pós-graduação em Ciências Cartográficas - FCT

Modelagem fotogramétrica e calibração de um sistema de visão omnidirecional

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Relação entre postura, queixa dolorosa e lesão em bailarinas clássicas

Introduction: Due to the high recurrence of pain complaints and the increasing incidence of musculoskeletal injuries and postural changes in dance practice, researches related to this issue gained greater importance in scientific community. Objective: This study aimed to evaluate complaints and pain threshold, postural misalignments and the incidence of injuries in dancers noting if there is a relationship between these variables. Method: Participants were 15 ballet dancers in Marília - SP. We used photogrammetry for postural analysis, the McGill Pain Questionnaire for pain location of the volunteer, algometry pressure for measuring the threshold of pain perception and Referred Morbidity to verify and characterize the incidence of injuries this population. In the data analysis we use to percentage to quantify the data from questionnaires and Pearson correlation test angles of photogrammetry correlating with the values of the threshold of pain perception. Results: 73.33% of dancers reported to have suffered some kind of injury in the last year. The area of greatest pain complaint checked at McGill, was the region of the foot (73.30%). Conclusion: There was an agreement between regions of injury and pain, however, there wasn’t a correlation between the threshold of pain tolerance and postural angles.

Avaiação da Dor e da Postura em Pacientes com Lombalgia Submetidos a Dois Protocolos de Fortalecimento Abdominal

Introduction: the lumbar spine is the main part of the body responsible for the support of the loads, where approximately half of body weight is in stable balance. This support relates to the action of abdominal muscles, of great importance in the balance of that region. The existence of abdominal muscle weakness, such won’t perform its function, may induce pathological postural attitude, that predispose the pain. Objective: to compare the effects of two abdominal strengthening protocols on pain and postural alignment in individuals with low back pain. Method: participated of the study 21 individuals of both genders, with ages between 19 and 25 years old (average 21,8±1,5) and average Body Mass Index (BMI) 21,9 (±2,48), divided randomly in isometric abdominal stimulation group (n=8), abdominal strengthening group (n=7) and control group (n=6). They realized eight sessions of strengthening, when responded Visual Analogue Scale (VAS) before and after each intervention. The control group (n=6) had no intervention. The postural data had been analyzed by photogrammetry. Results: Pain and posture data were analyzed using paired t test, with signifi cance index of 5%. Postural angles had no signifi cant differences (p>0,05) from all angles analyzed after the intervention to none of the groups. For pain values, a signifi cant decrease (p<0,05) was observed since the fi fth session in patients who were treated by the abdominal exercises protocol, and the fi rst session in patients who were treated by the isometric abdominal stimulation protocol. However, this decrease in pain was immediate, not lasting along the treatment sessions, in both protocols. Conclusion: the proposed protocols did not interfere in postural alignment. They were effective to decrease pain in a same session, once the isometric was the most effective, but they weren’t effective in preserving the improves over time.

Análise da concordância entre instrumentos de avaliação de flexibilidade para os músculos isquiocrurais em idosos

Introduction : The aging is characterized by a reduction in the effectiveness of skills, among them the loss of the flexibility. The hamstring muscles may be affected by the decreased flexibility occurs when elderly can present limitation of gait, low back problems and osteomuscular. Among the techniques used to evaluate the flexibility of the hamstring muscles are the Sit and Reach Test and Computerized Photogrammetry evaluation of the popliteal angle . However, the scientific literature doesn’t provide consistent data on the correlation of these forms of evaluation. Objective: To analyze the correlation between the sit and reach test and Computerized Photogrammetry evaluation of the popliteal angle used to assess the flexibility of the hamstring muscles in elderly women. Method: This was a cross-sectional, observational study, consisting of 39 elderly, healthy. The evaluation was composed by forms with personal details and physical examination (body weight, height and body mass index), and the evaluation of tests to measure the flexibility of the hamstring muscles (Sit and reach test and Computerized Photogrammetry evaluation of the popliteal angle). The correlation of the data was done by using the Spearmam’s rank correlation coefficient, with a significance level of 5% (p<0.05). Results: The data showed a positive correlation between Sit and Reach Test Computerized Photogrammetry and the popliteal angle of the right leg (r=0.4690, p=0.0026) and the left leg (r=0.3604, p=0.0241). Conclusion: The data from this study allow conclude that the tests for assessing hamstring flexibility in elderly women, the Sit and Reach Test and Computerized Photogrammetry evaluation of the popliteal angle are complementary because it doesn’t correlate strongly.

Proposta de especificação para a documentação fotogramétrica do patrimônio arquitetônico baseada na análise experimental de requisitos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Análise comparativa dos resultados obtidos pelos métodos de calibração de campo tridimensional e bidimensional

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Orientação e ortorretificação de imagens terrestres nadirais

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Utilização de alvos codificados do tipo ARUCO na automação do processo de calibração de câmaras

This paper presents a proposal for the automation of the camera calibration process, locating and measuring image points in coded targets with sub-pixel precision. This automatic technique helps minimize localization errors, regardless of camera orientation and image scale. To develop this technique, several types of coded targets were analyzed and the ARUCO type was chosen due to its simplicity, ability to represent up to 1024 different targets and availability of source code implemented with the OpenCV library. ARUCO targets were generated and two calibration sheets were assembled to be used for the acquisition of images for camera calibration. The developed software can locate targets in the acquired images and it automatically extracts the coordinates of the four corners with sub-pixel accuracy. Experiments were conducted with real data showing that the targets are correctly identified unless excessive noise or fragmentation occurs mainly in the outer target square. The results with the calibration of a low cost camera showed that the process works and that the measurement accuracy of the corners achieves sub-pixel precision.

Desenvolvimento de um aplicativo para processamento de imagens obtidas por fotografias aéreas

Pós-graduação em Agronomia (Energia na Agricultura) - FCA