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Mostrando ítems 21-30 de 495
Uma arquitetura para o desenvolvimento de aplicações de visão computacional e processamento digital de imagens em sistemas embutidos
(Universidade Federal de Minas GeraisUFMG, 2009-03-31)
This paper describes an architecture of hardware and software that helps the development of applications of Computer Vision and Digital Image Processing in Embedded Systems, specically Smart Cameras. Smart Cameras are ...
Optical encryption using phase-shifting interferometry in a joint transform correlator
(Optical Society Of America, 2006-09)
We propose an optical encryption technique where the encrypted field and the decrypting key are obtained by three-step phase-shifting interferometry and registered as digital Fresnel holograms in a joint transform correlator ...
Segmentação de grãos de hematita em amostras de minério de ferro por análise de imagens de luz polarizada
(Universidade Federal de Santa MariaBREngenharia de ProduçãoUFSMPrograma de Pós-Graduação em Engenharia de Produção, 2008-02-19)
The aim of the present work is to classify co-registered pixels of stacks of polarized light images of iron ore into their respective crystalline grains or pores, thus producing grain segmented images that can be analyzed ...
A new bi-imaging NDT system for simultaneous recovery of attenuation and electronic density maps
(Confédération Française pour les Essais Non Destructifs, 2020)
Computed Tomography is a widely used imaging technique for non-destructive testing and evaluation in industry. Tomographic modalities exploit only primary radiation, which is non-deviated but attenuated radiation going ...
Uso de sombras na correção do efeito vinhete
(2014-01-01)
When registering spectral radiance from surface targets, digital numbers recorded by the imagery sensor may vary. Such variation causes imperfections on the images coming from aerial surveys. Variation in the image brightness ...
Método para contagem de plantas de milho baseado no processamento digital de imagens multiespectrais utilizando Drones em ambiente de campo
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência da Computação - PPGCCCâmpus São Carlos, 2022-03-15)
The processing of multispectral images acquired with an embedded camera in unmanned aerial vehicles (Drones) has brought new opportunities for precision agriculture. In such a context, this work presents a method for ...
An alternative to updating topographic maps using SPOT images
(2000-01-01)
Brazil has serious problems in systematic mapping and cartographic updating. Only 13% of the country is mapped in scale 1:50,000 and most of these maps are from approximately 30 years ago. Usually, professionals such as ...
Um sistema de contabilização de fluxo de veículos em vias públicas usando dispositivos móveis de uso geral
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia de Computação, 2020-12-16)
The present work proposes a vehicle counting system on public roads, using Digital Image Processing (DIP) techniques implemented on a smartphone, wich has been widely utilized to compose alternative solutions to the classic ...