Measurement of 3D particle size distributions by stereoscopic imaging

Michel Kempkes, Thomas Vetter, Marco Mazzotti

    Research output: Contribution to journalArticlepeer-review


    In this work a method is presented to acquire 3D size information on particles in suspension. An experimental setup capable of acquiring two images from the same particle at different angles is presented. These images are then processed to yield a 4D measurement called axis length distribution (ALD). Using a measurement model and a restoration algorithm, the 3D particle size distribution (PSD) is reconstructed. The technique is applied to characterize the 3D PSD of ascorbic acid crystallized from methanol and of β l-glutamic acid crystals in water. The shape of these particles determined by the algorithm was found to compare well with observations from electron microscopy images. © 2009 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)1362-1373
    Number of pages11
    JournalChemical Engineering Science
    Issue number4
    Publication statusPublished - 2010


    • Crystallization
    • Imaging
    • Particle shape
    • Particulate processes


    Dive into the research topics of 'Measurement of 3D particle size distributions by stereoscopic imaging'. Together they form a unique fingerprint.

    Cite this