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Registros recuperados: 49 | |
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amjad, waseem; Munir, Anjum; Sturm, Barbara. |
Lack of accurate information for the drying kinetics is the main barrier to optimize drying processes effectively. Online monitoring of drying data is not common due to practical issues involved in set-up application. In this study an imaging system was developed for large drying units to investigate the quality changes (color kinetics and shrinkage) combine with weight loss of food product spatially and non-destructively during convective drying. The imaging setup was used in a diagonal-airflow batch dryer and shifted along the dryer length to take data (food images and weight loss) at different positions using potato slices (5mm thick, 60°C) as drying material. First order model fitted well to value of ∆L* and ∆b* while ∆a* and ∆E fitted in zero order... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Image processing; Real time data; Drying. |
Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5985 |
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Mirzabe, Amir Hossein; Chegini, Golam Reza; Massah, Jafar; Khazaei, Javad. |
Due to success of air-jet application in food and agricultural sciences, a new method was invented based on the impingement jets in order to eliminate a number of problems present in mechanical methods of removing sunflower seeds from the head. When the sunflower head had linear velocity and the nozzle was fixed, the effects of the seeds’ location on the sunflower head, reservoir pressure, nozzle diameter, linear velocity of the sunflower head, and the distance between the nozzle outlet and the surface of the sunflower head on its removed area were examined. The regions removed by the impingement of the air-jet were photographed and the area of the removed regions was calculated based on the image processing technique. The results showed that the area of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sunflower; Thresher machine; Image processing; Linear velocity; Power consumption; Energy consumption.. |
Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6287 |
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Roa Guerrero, Edgar Eduardo. |
Nowadays, the determination of nutritional deficiencies in plants has become one of the most important analysis of crop growth. Often, this analysis is performed manually by specialized personnel for long period of time, leading to an error in the procedure. The purpose of this research is to develop a computational tool for the identification of nutritional deficiencies such as Nitrogen, Potassium and Phosphorus in Curuba plants. The methodology includes 3D designs, tool construction and the detection of nutritional deficiencies by image processing techniques in MatLab. Finally, the results obtained by the developed computational tool with respect to the data provided in a traditional way by the technical experts, presented an accuracy of 100%, 80%, 91%... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Image processing; Identification of nutritional deficiencies in plants Nutritional deficiencies; Growth indices; Computational tool. |
Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4335 |
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BENITES,SUSANA; SOMMER,CARLOS A.; LIMA,EVANDRO F. DE; SAVIAN,JAIRO F.; HAAG,MAURICIO B.; MONCINHATTO,THIAGO R.; TRINDADE,RICARDO I.F. DA. |
Abstract The Paraná-Etendeka Magmatic Province is associated with the distensive tectonics that caused the rupture of the Gondwana continent during the Lower Cretaceous and generated an intense volcanism that covers South America and the NW portion of Namibia in Africa. In Brazil, this volcanic sequence is named Serra Geral Group and predominantly consists of basalts and subordinated silicic rocks. The goal of this study is to characterize the geomorphological features observed in the Aparados da Serra region, southern Brazil, and to evaluate the relationship between these structures and the primary silicic volcanic structures. The geomorphological features were first identified using remote sensing and then correlated with flow structures observed in the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anisotropy of Magnetic Susceptibility; Image processing; Silicic lavas; Volcanic morphologies. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000300601 |
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CARVALHO,JULIANA O. DE; TOEBE,MARCOS; TARTAGLIA,FRANCIELI L.; BANDEIRA,CIRINEU T.; TAMBARA,ANDRÉ L.. |
ABSTRACT The goal of this study was to estimate the leaf area of Crotalaria juncea according to the linear dimensions of leaves from different ages. Two experiments were conducted with C. juncea cultivar IAC-KR1, in the 2014/2015 sowing seasons. At 59, 82, 102, 129 days after sowing (DAS) of the first and 61, 80, 92, 104 DAS of the second experiment, 500 leaves were collected, totaling 4,000 leaves. In each leaf, the linear dimensions were measured (length, width, length/width ratio and length × width product) and the specific leaf area was determined through Digimizer and Sigma Scan Pro software, after scanning images. Then, 3,200 leaves were randomly separated to generate mathematical models of leaf area (Y) in function of linear dimension (x), and 800... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Non-destructive method; Image processing; Mathematical models; Model validation. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401851 |
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Marinho,Daniel Almeida; Reis,Victor Machado; Vilas-Boas,João Paulo; Alves,Francisco Bessone; Machado,Leandro; Rouboa,Abel Ilah; Silva,António José. |
The purpose of this study was to develop a three-dimensional digital model of a human hand and forearm to apply Computational Fluid Dynamics to propulsion analysis in swimming. Computer tomography scans of the hand and forearm of an Olympic swimmer were applied. The data were converted, using image processing techniques, into relevant coordinate input, which could be used in Computational Fluid Dynamics software. From that analysis, it was possible to verify an almost perfect agreement between the true human segment and the digital model. This technique could be used as a means to overcome the difficulties in developing a true three-dimensional model of a specific segment of the human body. Additionally, it could be used to improve the use of Computational... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Finite element modelling; Image processing; Computational fluid dynamics; Biomechanics; Swimming. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200024 |
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Toebe,Marcos; Souza,Rafael Rodrigues de; Mello,Anderson Chuquel; Melo,Patrícia Jesus de; Segatto,Alexandre; Castanha,Ana Carla. |
ABSTRACT: The objectives of this work were estimate the leaf area of squash ‘Brasileirinha’ by linear dimensions of the leaves and check models available in the literature. An experiment was conducted in the 2015/16 sowing season. Were collected 500 leaves and in each one, were measured the length (L), width (W) and length×width product (LW) and determined the real leaf area (LA). Then, 400 leaves were separated to generate models of the leaf area (LA) as a function of linear dimension (L, W or LW) of squash. The remaining 100 leaves were used for the validation of models. A second experiment was conducted in the 2016/17 sowing season. Were collected 250 leaves, used only for the validation of the models of the first experiment. There is collinearity... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucurbita moschata; Image processing; Non-destructive method; Mathematical models. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000400203 |
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Mello,Renius; Vaz,Fabiano Nunes; Pacheco,Paulo Santana; Pascoal,Leonir Luiz; Prestes,Rosa Cristina; Costa,Patrícia Barcellos; Kipper,Djenifer Kirch. |
Intramuscular fat (IMF) influences important quality characteristics of meat, such as flavor, juiciness, palatability, odor and tenderness. Thus, the objective of this study was to apply the following image processing techniques to quantify the IMF in beef: palette; sampling, interval of coordinates; black and white threshold; and discriminant function of colors. Thirty-five samples of beef, with a wide range of IMF, were used. Color images were taken of the meat samples from different muscles, with variability in the IMF content. The IMF of a thin cross-section meat was determined by chemical lipid extraction and was predicted by image analysis. The chemical method was compared with the image analysis. The segmentation procedures were validated by the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tissue characterization; Meat industry; Marbling; Image processing; Meat quality.. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001865 |
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Biffi, Pedro Victor Barreto; Rossin, Sergio; Valerio, Mario. |
In this project "space-temporary Analysis of the landscape in the basin Dos Afonsos" was analyzed the patterns of change of use of the soils and the fragmentation of the wood, located in the basin Dos Afonsos, and inside the limits of the Redençao da Serra district that belongs to the Região do Vale do Paraíba-SP state. For it a was carried out an multitemporal analyzed on an area approximated of 6802,59 of hectares, using for that program SPRING, for the image of Landsat processing of the followings years 1984, 1994, 2005 and the images of CBERS of the 2005 years The analysis of detection of changes was made for the followings classes: Lake - Lagoon, Macrophytes, Wood, Grass, degraded Grass, implanted Grass, Burned, reforests and Bare soils. Concluding... |
Tipo: Article |
Palavras-chave: Remote sensing; Soils; Processamento de imagens; Sensoriamento remoto; The basin; Image processing. |
Ano: 2007 |
URL: http://hdl.handle.net/2315/111 |
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Catelani, Celso de Souza; Batista, Getulio Teixeira. |
This article characterized the forest fragments of Una River hydrographic basin, affluent of the Paraíba do Sul River. Results showed that the average mean size of all fragments is 9.06 ha and that the correlation to the circular shape is 0.68 and the mean nucleus area of fragments considering a border effect of 60m is 5.86 ha. The mean distance among them is 245m. These parameters indicate that this basin has elongated fragments, with high border effect and may be in risk of biodiversity erosion. The image showing the different size classes of fragments allowed spatial observation of critical areas of the basin in ecological sustainability risk. The computing tools proved to be useful and easy to use as long as a previous georeferenced data basis is... |
Tipo: Article |
Palavras-chave: Remote sensing; Image processing; SIG processamento de imagens sensoriamento remoto GIS. |
Ano: 2007 |
URL: http://hdl.handle.net/2315/84 |
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Registros recuperados: 49 | |
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