3D Scanner Procedures
The cost of three-dimensional or 3D scanning equipment has continued to drop dramatically with the development of more efficient technology, making 3D scanning more accessible to a larger audience. The goal of the 3D scanning procedure is to recreate the desired object and adapt it to a specific computer application.
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Registration
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The first step in the 3D scanning procedure is registration. In this step, multiple range scans are acquired to cover the whole surface of the object. Ambient light reflected from an object may also be captured, to assist a human operator in aligning the multiple registration scans.
Line-of-Sight Error
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After the initial scans have been aligned, some errors may still result from inaccurate sensor calibration and imprecise scanning. These imperfections are known as line-of-sight errors. To minimize line-of-sight error, 3D scanner procedures use an average of samples from overlapping scans.
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Scan Integration and Postprocessing
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During the scan integration step, the aligned multiple scans are combined into a unified surface representation. Scan integration geometrically recreates the scanned object from available data. Postprocessing occurs after the scans have been integrated. This process adapts the 3D model to a form usable by the desired computer application.
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References
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