Digital Processing And Correction
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Uma anÃlise comparativa dos codificadores/ decodificadores de voz para comunicaÃÃes digitais
This work proposes an analysis of signal processing by intervals containing Portuguese phonemes for encoders utilized in digital communications, specially in VoIP calls. The focus of this work is the adaptation capacity of encoders to vocal tract changes in these intervals during the signal processing. To make the analysis closer to the real time situation,
Publicado em: 2009
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2. Mapeamento de areas de cafe no municipio de Guaxupe/MG por meio de processamento digital de imagens Landsat / Coffee crop areas mapping in mountain relief through Principals Components Analysis
The economic importance of Brazilian coffee growing in the world market is notorious and makes up significant portion of the country s foreign trade exports. Minas Gerais stands out as the core of Brazilian coffee growing, with most of the planting areas (Coffea arabica) concentrated in the south, where it is grown in small plots widely spread throughout the
Publicado em: 2009
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3. Calibração radiométrica relativa da câmara CCD dos satélites CBERS-2 e CBERS-2B / Relative radiometric calibration of satellites CBERS-2 and CBERS-2B CCD camera
The satellites CBERS-2 and CBERS-2B were launched in 2003 and 2007, respectively. The images are received by reception station in Cuiabá and processed before being available to the users. In this step of the image processing, radiometric and geometric corrections are performed to improve image quality. One of the radiometric correction techniques is the rel
Publicado em: 2008
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4. MOBILE TECNOLOGY APPLICABILITY TO PRECISION SILVICULTURE ACTIVITIES: FORESTRY MAPPING, INVENTORY AND GEOSTATISTICS / APLICABILIDADE DA TECNOLOGIA MÓVEL EM ATIVIDADES DE SILVICULTURA DE PRECISÃO: MAPEAMENTO, INVENTÁRIO E GEOESTATÍSTICA FLORESTAIS
The moblie technology applicability to precision silviculture activities on planted forests involves the mapping, inventory and geostatistics. The objective of this research is to demonstrate the móbile technology potentiality in activities of precision silviculture. The precision of forested áreas surveys with GPS equipment integrated with Pocket PC compu
Publicado em: 2007
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5. An-edge preserving multigrid-like for image denoising and inpainting / Uma técnica multimalhas para eliminação de ruídos e retoque digita"
Techniques based on the Well-Balanced Flow Equation have been employed as an efficient tool for edge preserving noise removal. Although effective, this technique demands high computational effort, rendering it not practical in several applications. This work aims at proposing a multigrid-like technique for speeding up the solution of the Well- Balanced Flow
Publicado em: 2006
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6. Avaliação das imagens do sensor ASTER para discriminação espectral de variações faciológicas no granito Serra Branca, estado de Goiás / Aster sensor images valuation to spectral discrimination of faciologics variations in the Serra Branca granite, Goias state
The objective of this work was to evaluate the potential of ASTER/Terra images, acquired in the visible and near-infrared (VNIR) regions and in the shortwave infrared (SWIR) interval, for the discrimination of faciological variations in the Serra Branca granite massif in the Tin Province of the Goiás. This province is composed of several granitoid bodies th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/10/2003
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7. Aster sensor images valuation to spectral discrimination of faciologics variations in the Serra Branca granite, Goias state / Avaliação das imagens do sensor ASTER para discriminação espectral de variações faciológicas no granito Serra Branca, estado de Goiás
Este trabalho busca avaliar os aspectos relacionados à potencialidade das imagens do sensor Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)/Terra, obtidas na faixa do visível e infravermelho refletido, para discriminação espectral de variações faciológicas no maciço granítico Serra Branca, inserido na Província Estanífera de
Publicado em: 2003
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8. Tomografia computadorizada de raios-X como tecnica de ensaios não destrutivos de materiais
X-ray computed tomography (XCT), originally developed for medical purposes is becoming increasingly applied to several applications where it is necessary the interpretation of the internal structure of an object nondestructively. The present work shows the application of this technique to nondestructive testing using materiaIs and components of different den
Publicado em: 1997
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9. Correcao geometrica de imagens SPOT com uso de um modelo digital de elevacao / Geometric correction of SPOT imagery with the use of a digital elevation model
This work describes a theoretical and pratical methodology for geometric correction of satellite imagery including effects of relief. The methodology present here is applicable over the unfavourable situations, such as images obtained in lateral view with large inclination angle and pronounced height differences. The images already corrected must be supperpo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/1989
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10. Correcao geometrica de imagens SPOT com uso de um modelo digital de elevacao / Geometric correction of SPOT imagery with the use of a digital elevation model
This work describes a theoretical and pratical methodology for geometric correction of satellite imagery including effects of relief. The methodology present here is applicable over the unfavourable situations, such as images obtained in lateral view with large inclination angle and pronounced height differences. The images already corrected must be supperpo
Publicado em: 1989
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11. Caracterização espectral e identificação de áreas afetadas pela seca de ponteiros do eucalipto do Vale do Rio Doce (SPEVRD) com ênfase em dados orbitais TM/Landsat / Spectral characterization and identification of effected areas of eucalyptus dyeback in the Rio Doce Valley (SPEVRD)with emphasis on orbital TM/Landsat data
A remote sensing methodology was applied to spectrally characterize euçalyptus dyeback in the Rio Doce Valley (SPEVRD), Minas Gerais State. Spectroradiometric data, 35mm color and color infrared aerial photography and TM/LANDSAT data were used to that characterization. Significant spectral differences between healthy and damaged samples were verified throug
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/1988
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12. Caracterização espectral e identificação de áreas afetadas pela seca de ponteiros do eucalipto do Vale do Rio Doce (SPEVRD) com ênfase em dados orbitais TM/Landsat / Spectral characterization and identification of effected areas of eucalyptus dyeback in the Rio Doce Valley (SPEVRD)with emphasis on orbital TM/Landsat data
A remote sensing methodology was applied to spectrally characterize euçalyptus dyeback in the Rio Doce Valley (SPEVRD), Minas Gerais State. Spectroradiometric data, 35mm color and color infrared aerial photography and TM/LANDSAT data were used to that characterization. Significant spectral differences between healthy and damaged samples were verified throug
Publicado em: 1988