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Combining Augmented Reality and 3D Printing to Display Patient Models on a Smartphone
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FleXeen: Visually Manipulating Perceived Fabric Bending Stiffness in Spatial Augmented Reality.

Parinya Punpongsanon, Daisuke Iwai, Kosuke Sato

    IEEE Transactions on Visualization and Computer Graphics
    |September 21, 2018
    PubMed
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    This study introduces a projection mapping technique to visually alter fabric bending stiffness. The method uses optical flow analysis to change apparent fabric motion, successfully manipulating perceived stiffness in experiments.

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    Area of Science:

    • Human-Computer Interaction
    • Perception Science
    • Computer Graphics

    Background:

    • Fabric bending stiffness significantly influences human perception.
    • Existing methods for altering perceived stiffness are often complex or physically invasive.

    Purpose of the Study:

    • To develop a novel spatial augmented reality (AR) approach for visually manipulating perceived fabric bending stiffness.
    • To investigate the relationship between visual flow enhancement and perceived stiffness.
    • To create an interactive system for real-time stiffness control.

    Main Methods:

    • Utilized projection mapping and optical flow analysis to create visual fabric motion.
    • Implemented a flow enhancement method to alter apparent fabric motion without physical changes.
    • Conducted psychophysical experiments to quantify the effect of visual manipulation on perceived stiffness.

    Main Results:

    • A strong correlation was found between the flow enhancement magnification factor and perceived bending stiffness.
    • The prototype system successfully manipulated the perceived stiffness of various fabrics (cotton, polyester, cotton-linen blend).
    • The technique achieved an average accuracy of 90.3% in manipulating perceived stiffness.

    Conclusions:

    • Spatial AR projection mapping with optical flow enhancement is an effective method for visually altering perceived fabric bending stiffness.
    • This technique offers a non-physical, interactive approach to stiffness manipulation for applications in virtual reality and design.
    • The findings contribute to understanding visual cues in tactile perception and offer new possibilities for immersive experiences.