Data/hora: 20/06/2024 22:34:31

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	22/12/1999	
Data da última atualização: 	20/06/2018	
Autoria: 	CRUVINEL, P. E.; MINATEL, E. R.; MUCHERONI, M. L.; VIEIRA, S. R.; CRESTANA, S.	
Título: 	An automatic method based on image processing for measurements of drop size distribution from agricultural sprinklers.	
Ano de publicação: 	1996	
Fonte/Imprenta: 	In: SIMPOSIO BRASILEIRO DE COMPUTACAO GRAFICA E PROCESSAMENTO DE IMAGENS, 9., out. 1996, Caxambu, MG. Anais do SIBGRAPI 96. Caxambu: SBC/UFMG, 1996.	
Páginas: 	p. 39-46.	
Idioma: 	Inglês	
Conteúdo: 	The drop size distribution of sprinkler spray is of practical importance for two reasons. The first one is because the small droplets are subject to wind drift, distorting the application pattern. Second, large droplets possess greater kinetic energy which is transferred to the soil surface causing particle dislodgment and pudding that may result in surface crusting and runoff. We present in this paper a technique based on image processing for measure drop size distribution from agricultural sprinklers in automatic mode. This technique has the advantage of being a direct measurement method that allows to know the characteristics of agricultural sprinklers, which allows to study the effects of pressure and nozzle size on the distributions. The method was obtained using properties of the Fourier for correlation analysis in frequency domain. Results allow both farmers to change on existing irrigation systems to cope with field problems caused by low intake rates and runoff and development work to improve the uniformity of distribution of sprays from agricultural sprinklers.	
Palavras-Chave: 	Agricultural instrumentation; Agricultural sprinklers; Correlacao; Image; Imagem; Instrumentacao agropecuaria; Method.	
Thesagro: 	Irrigação; Método.	
Thesaurus Nal: 	correlation; irrigation; sprinklers.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (5544-1) - UPC - SP - -- - PROCI-96.00048 -  - 1996.00048 - DIS