Optimizing Fingernail Imaging Calibration for 3D Force Magnitude Prediction
نویسندگان
چکیده
منابع مشابه
Force Prediction Using Fingernail Imaging: An Overview
This paper presents a method for automatically calibrating a fingernail imaging system used to detect arbitrary three-dimensional force on the human fingerpad. The calibration is accomplished using a Magnetic Levitation Haptic Device modified to apply calibrated forces through a flat plate to the fingerpad. The technique explained here is shown to accurately predict arbitrary shear force with R...
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Shear and normal forces from fingertip contact with a surface are measured by external camera images of the fingernail. Due to mechanical interaction between the surface, fingertip bone, and fingernail, regions of tension or compression are set up that result in reddening or whitening due to blood flow. The effect is quantitative enough to serve as a transducer of fingertip force. Due to indivi...
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Most approaches to 3D x-ray imaging geometry calibration use some well-defined calibration phantom containing point markers. The calibration aims at minimizing the so-called re-projection error, i.e., the error between the detected marker locations in the acquired projection image and the projected marker locations based on the phantom model and the current estimate of the imaging geometry. The...
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We report on our development of sensorized fingernails for mechatronical hands. Our proposed design can capture static and dynamic interaction forces with the nail and provide basic information about the direction of the main force vector. Over the course of several iterations, we have developed a very compact working prototype that fits together with our previously developed multi cell MID-bas...
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ژورنال
عنوان ژورنال: IEEE Transactions on Haptics
سال: 2016
ISSN: 1939-1412,2329-4051,2334-0134
DOI: 10.1109/toh.2015.2468229