Title :
The use of X- and γ-rays dedicated computerized minitomography scanner in agriculture due to the limitations imposed by medical computerized tomography scanners
Author :
Cruvinel, Paulo Estevão ; Crestana, Sílvio
Author_Institution :
EMBRAPA-CNPDIA, Sao Carlos, Brazil
Abstract :
In 1987 at the Center for Instrumentation (CNPDIA) of the Brazilian Enterprise for Agricultural Research Center (EMBRAPA) an X- and γ-rays computerized minitomography scanner was developed for multidisciplinary use. Since 1987 several multidisciplinary works have been carried out from CNPDIA, mainly related to applications to soil physics. In the present study, the importance of the use of dedicated CT scanners and data processing is demonstrated for the evaluation of soil bulk density. For comparison we also outline measurements using a third generation medical computerized tomography scanner. Results show the usefulness of the use of a dedicated CT scanner mainly due to image contrast characteristics and cost
Keywords :
computerised tomography; gamma-ray applications; geophysical techniques; soil; γ-ray computerized minitomography scanner; X-ray computerized minitomography scanner; dedicated CT scanners; image contrast characteristics; soil bulk density; soil physics; Agriculture; Application software; Attenuation; Biomedical imaging; Computed tomography; Density measurement; Pixel; Pollution measurement; Shape measurement; Soil measurements;
Conference_Titel :
Cybernetic Vision, 1996. Proceedings., Second Workshop on
Conference_Location :
Sao Carlos
Print_ISBN :
0-8186-8058-X
DOI :
10.1109/CYBVIS.1996.629465
