Geometric Correction
Mostrando 1-12 de 22 artigos, teses e dissertações.
-
1. Influence geometric anisotropy in management zones delineation
RESUMO O manuseio adequado do solo, além de permitir a redução de contaminantes e a maximização da produtividade agrícola, está diretamente relacionado ao conhecimento da variabilidade espacial dos atributos do solo. Esta variabilidade espacial pode expressar-se de forma isotrópica e anisotrópica. Sendo a última, negligenciada nas pesquisas relacio
Rev. Ciênc. Agron.. Publicado em: 04/11/2019
-
2. Hybrid Geoid Model: Theory and Application in Brazil
Determination of the ellipsoidal height by Global Navigation Satellite Systems (GNSS) is becoming better known and used for purposes of leveling with the aid of geoid models. However, the disadvantage of this method is the quality of the geoid models, which degrade heights and limit the application of the method. In order to provide better quality in transfo
An. Acad. Bras. Ciênc.. Publicado em: 2017-09
-
3. Measuring bacterial cells size with AFM
Atomic Force Microscopy (AFM) can be used to obtain high-resolution topographical images of bacteria revealing surface details and cell integrity. During scanning however, the interactions between the AFM probe and the membrane results in distortion of the images. Such distortions or artifacts are the result of geometrical effects related to bacterial cell h
Brazilian Journal of Microbiology. Publicado em: 2012-03
-
4. Analysis of digital surface models generated from images of PRISM/ ALOS sensor / Análise de modelos digitais de superfície gerados a partir de imagens do sensor PRISM/ALOS
O objetivo deste trabalho é a análise da qualidade de Modelos Digitais de Superfície (MDSs) gerados a partir de pares estereoscópicos de imagens do sensor PRISM/ALOS, considerando-se aspectos quanto a diferentes abordagens de correção geométrica, estratégias de correlação de imagens, espaçamento da grade e acurácia posicional. O padrão de acurá
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/10/2011
-
5. Projeto de um conversor analógico-digital para um receptor Bluetooth em tecnologia CMOS. / Analog to digital converter design for a Bluetooth receiver in CMOS technology.
In this work, an Analog to Digital Converter (ADC) fulfilling the Bluetooth standard specifications is designed. This block stays at the reception side of an integrated wireless transceiver in CMOS technology. Initially, an analysis of the ADC as a system is carried out, at the same time that the specifications at that level are developed. The architecture a
Publicado em: 2010
-
6. Orthoretification of high-resolution images for application in rural technical cadastral and mapping of permanent preservation and legal reserve areas / Ortorretificação de imagens de alta resolução para aplicação em cadastro técnico rural e mapeamento de áreas de preservação permanente e reservas legais
Besides the vast interpretative information generated after being submitted to geometric corrections, high spatial resolution orbital images allow extracting geometric information (angles, distances and areas). Different correction methods can be used for this purpose. If the method used corrects relief influence, it carries out image orthoretification, and
Publicado em: 2009
-
7. Cartographic and aerophotogrametric techniques in the study of erosion: high basin of the river Araquá, municipality of Sao Pedro and Charqueada / SP / Técnicas cartográficas e aerotogramétricas no estudo da erosão: alta bacia do Ribeirão Araguá - São Pedro e Charqueada / SP
This study aimed to make an inventory of the forms of linear erosion in the high basin of the river Araquá, municipality of San Pedro and Charqueada / SP, based on cartographic and aerophotogrametric techniques in analog and digital environment. The survey was conducted in 2 different scales of approach: 1:50.000 (semi-detailed) and 1:15.000 (detailed). In
Publicado em: 2009
-
8. 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
-
9. Estudo teÃrico da maleimida, seus dÃmeros e trÃmeros / Theoretical Study of Maleimide, its Dimers and Trimers
In this work we have performed MP2 and B3LYP molecular orbital calculations with a 6-31++G(d,p) basis set to analyze and interpret the infrared spectrum of maleimide and its possible hydrogen complexes (dimers and trimers), including their stabilization energies, intermolecular charge transfers and geometric modifications due complexation. The infrared spect
Publicado em: 2008
-
10. Image geometry: from the satellite project to the product generation / Geometria de imagens: do projeto do satélite à geração dos produtos
This paper aims to fill in an important gap for the Brazilian Space Program. It offers elements for the study of the geometric quality of the remote sensing satellite images, from the initial development stage of the various systems in one satellite. Besides the CBERS Program, the Brazilian Space Program includes Brazil s participation in other international
Publicado em: 2007
-
11. Utilização de perfis multi-temporais do NDVI/AVHRR no acompanhamento da safra de soja no oeste do Parana / Use of NDVI/AVHRR time-series profiles for soybean crop monitoring in the west of Parana, Brazil
Crop yield forecasting systems are important sources of information for helping Governrnent and private institutions in agricultural trade matters. The traditional methods of crop yield forecasting norma1ly do not provide precise estimations, due to its subjectivity. The use of Geothecnology has been studied for the development of more efficient crop yield f
Publicado em: 2007
-
12. Evaluation of digital terrain model extracted from SAR data in X-Band of SAR R-99B / Avaliação do Modelo Digital do Terreno Extraído de Dados SAR Interferométricos na Banda X do SAR R-99B
In the Brazilian territory there are several areas with no topographic mapping coverage and the existent maps are not updated due to the continuous land use and land cover changes. The Sistema de Prote¸cao da Amazonia (SIPAM) uses airplanes with synthetic aperture radar which allows to image in several conditions. This radar was designed for recoinassance t
Publicado em: 2007