Camera Digital
Mostrando 1-12 de 269 artigos, teses e dissertações.
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1. Feasibility of computational vision in the genetic improvement of sweet potato root production
RESUMO O melhoramento da batata-doce é um trabalho oneroso em decorrência do grande número de características analisadas para a seleção dos melhores genótipos, fazendo-se necessária a adoção de novas tecnologias, como o uso de imagens, associadas ao processo de fenotipagem. Objetivou-se desenvolver uma metodologia para a fenotipagem da produção d
Horticultura Brasileira. Publicado em: 2022
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2. PhotoMetrix UVC: A New Smartphone-Based Device for Digital Image Colorimetric Analysis Using PLS Regression
A novel free PhotoMetrix UVC is proposed for both the operation of a universal serial bus video camera (UVC) and multivariate image analysis, allowing a full solution for point-of-use analysis. A UVC was placed in an open-source 3D-printed chamber illuminated by a white light-emitting diode (LED) with controlled intensity of light. The digital images capture
J. Braz. Chem. Soc.. Publicado em: 2021-03
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3. COMPARING A SINGLE-SENSOR CAMERA WITH A MULTISENSOR CAMERA FOR MONITORING COFFEE CROP USING UNMANNED AERIAL VEHICLES
ABSTRACT There exist two options for digital cameras that can capture the near-infrared (NIR) band. Conventional red–green–blue (RGB, visible bands) cameras with a single sensor provide NIR band visibility based on the removal of the internal NIR-blocking filter. Alternatively, multisensor cameras exist that have a specific sensor for each band. The modi
Eng. Agríc.. Publicado em: 2021-02
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4. RAPID DETECTION OF VITAMIN C CONTENT IN FRUITS AND VEGETABLES USING A DIGITAL CAMERA AND COLOR REACTION
In this study, we propose a novel method to determine the vitamin C content in fruits and vegetables. The proposed method exploits the image and data processing abilities of computers by coupling a digital camera and a color reaction. An image acquisition device was developed to collect the image information of the solution to be measured after the color rea
Quím. Nova. Publicado em: 2020-12
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5. CLASSIFICATION OF ROBUSTA COFFEE FRUITS AT DIFFERENT MATURATION STAGES USING COLORIMETRIC CHARACTERISTICS
ABSTRACT Coffee growers who produce the robusta species (Conilon) have sought to increase productivity and drink quality by improving production techniques. Artificial vision systems can assist in increasing the efficiency of operations associated with crop management. This study aimed to obtain colorimetric characteristics of robusta coffee fruits at differ
Eng. Agríc.. Publicado em: 2020-08
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6. Características colorimétricas obtidas a partir de imagens digitais para avaliação da qualidade de tomates
RESUMO Variáveis obtidas por métodos ópticos podem apresentar correlação com características relacionadas à qualidade e maturação de tomates. Neste contexto, objetivou-se com este estudo analisar a correlação entre as variáveis colorimétricas e físico-químicas de tomates, agrupando-os em função do estádio de maturação, utilizando análise
Rev. bras. eng. agríc. ambient.. Publicado em: 2020-08
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7. STUDY OF PARAMETERS AFFECTING THE COALESCENCE OF DIMETHYL DISULFIDE DROPS IN A MEROX UNIT
Abstract This study focuses on the coalescence of dimethyl disulfide drops with the mother phase at a flat aqueous-organic interface between dimethyl disulfide and different sodium hydroxide solutions. Drop coalescence is an important part of the Merox process for regenerating the solvent. A digital high-frame rate camera was used for recording drops coalesc
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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8. THE USE OF THE AUTOMATED DIGITAL ZENITH CAMERA SYSTEM IN ISTANBUL FOR THE DETERMINATION OF ASTROGEODETIC VERTICAL DEFLECTION
Abstract: The Digital Zenith Camera Systems (DZCSs) are dedicated astrogeodetic instruments used to obtain highly accurate astrogeodetic vertical deflection (VD) data. The first Turkish DZCS, the Astrogeodetic Camera System (ACSYS), was developed in Istanbul, Turkey in 2015. The ACSYS was capable of determining astrogeodetic VDs with an accuracy of ~0.3 arcs
Bol. Ciênc. Geod.. Publicado em: 28/11/2019
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9. Uso de retinógrafo portátil como ferramenta no rastreamento de retinopatia diabética
Resumo Objetivo: Determinar a concordância do retinógrafo portátil Pictor Plus, na ausência de midríase, com a retinografia digital e avaliar a sua acurácia como método de rastreio da retinopatia diabética (RD). Métodos: Estudo transversal, mascarado para o observador, avaliando 100 olhos de 51 pacientes diabéticos. Foram realizadas retinografia
Rev. bras.oftalmol.. Publicado em: 04/11/2019
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10. Pôster Quiz como Estratégia Inovadora na Exposição de Trabalhos em um Congresso de Educação Médica
RESUMO Introdução A exposição de trabalhos científicos é uma das metodologias utilizadas nos congressos e faz parte da comunicação informal do conhecimento científico, usada entre os cientistas ao se inserirem em um cotidiano restrito de pesquisadores. A tecnologia QR code facilita o acesso à produção científica e à dinamização do conhecime
Rev. bras. educ. med.. Publicado em: 14/10/2019
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11. Anatomical Study of the Facial Recess with Implications in Round Window Visibility for Cochlear Implantation: Personal Observations and Review of the Literature
Abstract Introduction Posterior tympanotomy through facial recess (FR) is the conventional and most preferred approach to facilitate cochlear implantation, especially when the electrode is inserted through the round window. The complications of the FR approach can be minimized by proper understanding of the anatomy of the FR. Objective The present study
Int. Arch. Otorhinolaryngol.. Publicado em: 07/10/2019
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12. ESTIMATING VEGETATION VOLUME OF COFFEE CROPS USING IMAGES FROM UNMANNED AERIAL VEHICLES
ABSTRACT Tree crops, such as Arabica coffee (Coffea arabica L.), present enormous technical challenges in terms of pesticide application. The correct deposition and distribution of the active ingredient throughout the aerial part of these plants depends on knowledge of the canopy volume, but manually determining this volume is time consuming and imprecise. T
Eng. Agríc.. Publicado em: 09/09/2019