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Determination of actual object size distribution from direct imaging

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Determination of actual object size distribution from direct imaging

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dc.contributor.author Hossain, Md. Iqbal
dc.contributor.author Chen, Tao
dc.contributor.author Yang, Yanhui
dc.contributor.author Lau, Raymond
dc.date.accessioned 2011-09-05T03:39:57Z
dc.date.available 2011-09-05T03:39:57Z
dc.date.copyright 2009
dc.date.issued 2011-09-05
dc.identifier.citation Hossain, M. I., Chen, T., Yang, Y. H., & Lau, R. (2009). Determination of Actual Object Size Distribution from Direct Imaging. Industrial & Engineering Chemistry Research, 48, 10136-10146.
dc.identifier.issn 0888-5885
dc.identifier.uri http://hdl.handle.net/10220/6971
dc.description.abstract Direct imaging is a technique commonly used in the study of particle, bubble, and droplet size distribution in a dynamic system. Objects such as particles, bubbles, and droplets can be present at various distances from the imaging device when images are captured. Hence, the location of the object will need to be known in order to determine the actual size of an individual object. However, the location of the object cannot be determined from a single image. A single calibration scale defined at the focusing plane is normally used for the determination of all the object sizes from images. When the focus is close to the imaging device, the change in magnification with location is large. The size distribution obtained from the use of a single calibration scale would thus give a considerable deviation from the actual size distribution. In this study, a statistical method is proposed to reconstruct the actual object size distribution from the experimental object size distribution obtained from images using a single calibration scale defined at the focusing plane. Experiments are performed to validate the accuracy of the proposed method on the particle size distribution determination in a settling system. The stability of the proposed method is also analyzed theoretically for imaging devices with different depth-of-field (DOF), focusing location, and change in magnification with distance.
dc.format.extent 11 p.
dc.language.iso en
dc.relation.ispartofseries Industrial & engineering chemistry research
dc.rights @ 2009 American Chemical Society
dc.subject DRNTU::Engineering::Chemical engineering::Processes and operations.
dc.title Determination of actual object size distribution from direct imaging
dc.type Journal Article
dc.contributor.school School of Chemical and Biomedical Engineering
dc.identifier.doi http://dx.doi.org/10.1021/ie900857m
dc.description.version None of the above
dc.identifier.rims 149015

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