No description available.

This study is, primarily, a presentation of a "re-exploration" of the physiography and vegetation of a large portion of Northern Ontario. At the same time, it serves as an illustration of a method of multiple survey through the use of aerial photographs.

No description available.

Orientador: Zacarias Xavier de Barros / Banca: Bruna Soares Xavier de Barros / Banca: Paulo Roberto Arbex Silva / Banca: Adelson Francisco Maia Junior / Banca: Elvio Gilberto da Silva / Resumo: O processamento de imagens é uma área em crescimento. Diversos temas científicos são abordados e em alguns casos de caráter interdisciplinar. Entre eles pode-se citar: obtenção de imagens, compreensão de imagens, análise em multi-resolução e em multi-frequência, análise estatística, codificação e a transmissão de imagens. O conhecimento e a utilização dos recursos naturais, humanos e econômicos de uma região ou de um país, é de fundamental importância para o seu desenvolvimento. O planejamento do uso do solo tem se tornado cada vez mais importante diante desse contexto. Na agronomia mais precisamente no estudo de fotografias aéreas pode-se relacionar vários setores que poderão ser beneficiados por esse estudo, como por exemplo: levantamento e delimitação de bacias hidrográficas, geoprocessamento, fotogrametria, fotopedologia, fotointerpretação, mapeamento de solos, geoestatística e ocupação e uso do solo. Esse trabalho envolveu a linguagem de programação orientada a objetos JAVA e banco de dados relacional MYSQL ambos com licença gratuita e codigo livre, tornando possível o desenvolvimento de um sistema consistente, ganhando velocidade e confiabilidade na escrita dos códigos. Este trabalho teve como objetivo o desenvolvimento de um programa de computador para: processamento de imagens de fotografias aéreas, obtendose por meio de imagens bidimensionias imagens estéreoscopicas tridimensionais / Abstract: The image processing is a growing area. Several scientific issues are addressed and in some cases interdisciplinary. These include: imaging, image understanding, analysis of multi-resolution and multi-frequency, statistical analysis, coding and transmission of images among others. The knowledge and use of natural resources, human and economic of a region or a country, it is of fundamental importance for its development. The planning of land use has become increasingly important in light of that context. In agronomy more precisely in the study of aerial photographs can relate various sectors that can benefit in this study, such as: survey and delineation of watersheds, GIS, photogrammetry, photo pedology, photo interpretation, soil mapping, geostatistics and occupation and use of ground. This work involved oriented programming language JAVA objects and relational database MySQL with both open source license, or free, making it possible to develop a consistent system, gaining speed and reliability in writing codes. This study aims to develop a computer program for: aerial photographs of image processing to get through two-dimensional images three-dimensional images / Doutor

This thesis analyzes some of the effects of urbanization in Pinellas County, Florida on the karst landscape. Many sinkholes have been obscured and/or modified for storm water retention by urbanization in Pinellas County, with a few sinkholes still identifiable by characteristic zoning of vegetation, soil moisture, and circular shape. Using aerial photos from 1926 and 2000, karst features were identified by circularity,vegetation, and moisture conditions. Mapping karst surface features using historic aerial photos and maps is a useful exercise that will assist our scientific understanding of karstification in Florida and the nature and extent of karst processes that have acted in the pre-urbanized past. The final product of this research is a digital spatial database and metadata of karst features discernable on the 1926 and 2000 aerial photos; a description of the karst landscape mapped for each time period; and a morphometric description (including sinkhole area, density, and topography) of the karst landscape mapped for each time period. A total of 2,703 sinkholes were identified on the 1926 aerial photos. By 2000 only 900 sinkholes were still visible, a loss of 87.31%. Most of the loss of these sinkholes was due to the rapid urbanization that happened between 1926 and 2000. A total of 499 sinkholes that had been identified in 1926 have now been modified into storm water retention ponds.

Interpretation of large-scale color infrared and color aerial photography can be a labor and cost-effective means for inventorying and monitoring rangelands while maintaining accuracy. Ground measurements of vegetation cover at Organ Pipe Cactus National Monument were taken in 1975 and 1984. Large-scale (1:1200) color and color infrared aerial photo estimates were compared to these ground measurements through regression and correlation to check photo accuracy. Relationships between photo estimates and ground measurements of total vegetation and shrub cover were strong when using either film type. Color infrared photo estimates corresponded better with ground measurements for both tree cover and cactus cover than color photo estimates. Large-scale aerial photography is also useful for determining some of the causes of vegetation change. Evidence gathered from both sets of photos suggested that vegetation change at OPCNM was largely the result of domestic livestock removal and short-term climatic fluctuations.

Made available in DSpace on 2016-06-07T17:12:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-12-09. Added 1 bitstream(s) on 2016-06-07T17:17:17Z : No. of bitstreams: 1 000865116.pdf: 1090079 bytes, checksum: 222ef9d4e6e1cffd73a6ccb6c9766fac (MD5) / O processamento de imagens é uma área em crescimento. Diversos temas científicos são abordados e em alguns casos de caráter interdisciplinar. Entre eles pode-se citar: obtenção de imagens, compreensão de imagens, análise em multi-resolução e em multi-frequência, análise estatística, codificação e a transmissão de imagens. O conhecimento e a utilização dos recursos naturais, humanos e econômicos de uma região ou de um país, é de fundamental importância para o seu desenvolvimento. O planejamento do uso do solo tem se tornado cada vez mais importante diante desse contexto. Na agronomia mais precisamente no estudo de fotografias aéreas pode-se relacionar vários setores que poderão ser beneficiados por esse estudo, como por exemplo: levantamento e delimitação de bacias hidrográficas, geoprocessamento, fotogrametria, fotopedologia, fotointerpretação, mapeamento de solos, geoestatística e ocupação e uso do solo. Esse trabalho envolveu a linguagem de programação orientada a objetos JAVA e banco de dados relacional MYSQL ambos com licença gratuita e codigo livre, tornando possível o desenvolvimento de um sistema consistente, ganhando velocidade e confiabilidade na escrita dos códigos. Este trabalho teve como objetivo o desenvolvimento de um programa de computador para: processamento de imagens de fotografias aéreas, obtendose por meio de imagens bidimensionias imagens estéreoscopicas tridimensionais / The image processing is a growing area. Several scientific issues are addressed and in some cases interdisciplinary. These include: imaging, image understanding, analysis of multi-resolution and multi-frequency, statistical analysis, coding and transmission of images among others. The knowledge and use of natural resources, human and economic of a region or a country, it is of fundamental importance for its development. The planning of land use has become increasingly important in light of that context. In agronomy more precisely in the study of aerial photographs can relate various sectors that can benefit in this study, such as: survey and delineation of watersheds, GIS, photogrammetry, photo pedology, photo interpretation, soil mapping, geostatistics and occupation and use of ground. This work involved oriented programming language JAVA objects and relational database MySQL with both open source license, or free, making it possible to develop a consistent system, gaining speed and reliability in writing codes. This study aims to develop a computer program for: aerial photographs of image processing to get through two-dimensional images three-dimensional images

No description available.

Made available in DSpace on 2014-06-11T19:31:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-10-13Bitstream added on 2014-06-13T20:22:31Z : No. of bitstreams: 1 nascimento_fm_dr_botfca.pdf: 587403 bytes, checksum: 6f5bea54324cc9b433da1b148f700a5f (MD5) / A grande importância da citricultura no Estado de São Paulo, particularmente no Município de Botucatu, e sua grande expansão em área nos últimos anos e o avanço das técnicas de monitoramento ambiental, como o sensoriamento remoto motivou a presente pesquisa. O objetivo deste trabalho foi avaliar as alterações espaço-temporal da citricultura no Município de Botucatu-SP, no período de 1962 a 2005, utilizando-se de: fotografias aéreas pancromáticas de 1962, 1972 e 1977 e coloridas de 2000 e 2005, imagens de satélite Landsat 2000 e 2005; juntamente com técnicas de Sensoriamento Remoto e Sistemas de Informações Geográficas, visando avaliar as diferenças na determinação de áreas e perímetros, por meio dos aplicativos: CartaLinx, SIG-Idrisi e SPLAN. Os resultados obtidos permitem concluir que: a área ocupada pela citricultura no Município de Botucatu-SP em 2000 representava 5,22% da área total do Município; passando a ocupar 8,63 % no ano de 2005, representando um incremento de 3,41% na área total estudada e uma expansão de 65,27% da área citrícola no período de cinco anos; sendo que, no período de 43 anos (1962 a 2005), houve um incremento de 12722,56 ha desta área. As áreas obtidas por meio de fotografias aéreas e avaliadas pelo Carta Linx apresentam valores mais próximos da verdade terrestre para a determinação de áreas e perímetros. A falta de nitidez das imagens de satélite dificulta a identificação de pequenas áreas de cobertura vegetal; o SIG-Idrisi apresentou discrepâncias para a determinação de perímetros, em função de trabalhar de forma matricial e que o SPLAN, é próximo do Carta Linx, para a determinação de áreas e perímetros, devido ao fato de ambos trabalharem de forma vetorial / The great importance of citrus in São Paulo, particularly in Botucatu, its major expansion in area in recent years and the advanced techniques for environmental monitoring, such as remote sensing, are all factors that have motivated the present research. The aim of this study was to evaluate the spatial and temporal changes of citrus in Botucatu-SP from 1962 to 2005. For this, was used, panchromatic aerial photographs from 1962, 1972 and 1977, color ones from 2000 and 2005, Landsat satellite images from 2000 and 2005. Along with those, Remote Sensing and Geographic Information Systems were also used in order to evaluate the differences in determining areas and perimeters, by using software such as CartaLinx, GISIdrisi and SPLAN. The results showed that the area occupied by citrus in Botucatu-SP was 5.22% of the total area of the county in 2000. In 2005, it represented 8.63%, showing a 3.41% increase of the total area and an expansion of 65.27% of the citrus area within five years, being that during the period of 43 years (1962-2005), there was an increase of 12722.56 ha of this area. The areas obtained from aerial photographs and evaluated with CartaLinx present values closer to ground truth for the determination of areas and perimeters. The lack of accuracy in the satellite images makes it difficult to identify small areas of vegetation. GISIdrisi showed discrepancies in perimeter determination, as it works with matrixes. SPLAN is similar to CartaLinx for the determination of areas and perimeters, due to the fact that both work with vectors

This study demonstrates the value of historical aerial photographs as a source for monitoring long-term landslide evolution, which can be unlocked by using appropriate photogrammetric methods. The understanding of landslide mechanisms requires extensive data records; a literature review identified quantitative data on surface movements as a key element for their analysis. It is generally acknowledged that, owing to the flexibility and high degree of automation of modern digital photogrammetric techniques, it is possible to derive detailed quantitative data from aerial photographs. In spite of the relative ease of such techniques, there is only scarce research available on data quality that can be achieved using commonly available material, hence the motivation of this study. In two landslide case-studies (the Mam Tor and East Pentwyn landslides) the different types of products were explored, that can be derived from historical aerial photographs. These products comprised geomorphological maps, automatically derived elevation models (DEMs) and displacement vectors. They proved to be useful and sufficiently accurate for monitoring landslide evolution. Comparison with independent survey data showed good consistency, hence validating the techniques used. A wide range of imagery was used in terms of quality, media and format. Analysis of the combined datasets resulted in improvements to the stochastic model and establishment of a relationship between image ground resolution and data accuracy. Undetected systematic effects provided a limiting constraint to the accuracy of the derived data, but the datasets proved insufficient to quantify each factor individually. An important advancement in digital photogrammetry is image matching, which allows automation of various stages of the working chain. However, it appeared that the radiometric quality of historical images may not always assure good results, both for extracting DEMs and vectors using automatic methods. It can be concluded that the photographic archive can provide invaluable data for landslide studies, when modern photogrammetric techniques are being used. As ever, independent and appropriate checks should always be included in any photogrammetric design.