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Instrument Calibration

Instrument Calibration

Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...

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Glassware Calibration

Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
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Adjusting a Traverse

Adjusting a Traverse

In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...

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Calibration Curves: Linear Least Squares

A calibration curve is a plot of the instrument's response against a series of known concentrations of a substance. This curve is used to set the instrument response levels, using the substance and its concentrations as standards. Alternatively, or additionally, an equation is fitted to the calibration curve plot and subsequently used to calculate the unknown concentrations of other samples reliably.
For data that follow a straight line, the standard method for fitting is the linear...

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Related Experiment Video

Updated: Apr 25, 2026

Stereo-Imaging System DLT Calibration to Capture 3D In Situ Displacements of Stretched Peripheral Nerves

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A Tool-Free Calibration Method for Turntable-Based 3D Scanning Systems.

Xufang Pang, Rynson W H Lau, Zhan Song

IEEE Computer Graphics and Applications

|August 20, 2014

Summary

This summary is machine-generated.

This study introduces an automatic method for calibrating 3D scanner turntable axes without needing special tools. The new technique refines scan poses and rotation matrices for accurate 3D reconstruction.

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Area of Science:

Computer Vision
Metrology
3D Scanning

Background:

Turntable-based 3D scanners require precise axis calibration.
Current calibration methods rely on manual installation of specialized tools like chessboards or spheres.
This necessitates time-consuming setup and removal procedures.

Purpose of the Study:

To develop an automatic turntable axis calibration method for 3D scanners.
To eliminate the need for manual calibration tools.
To improve the efficiency and accuracy of 3D scanning workflows.

Main Methods:

Automatic registration to recover the initial rotation axis from object scan sequences.
An iterative procedure alternating between refining scan poses and approximating the rotation matrix.
Evaluation on a structured light-based 3D scanning system.

Main Results:

Successful automatic calibration of the turntable axis without external tools.
Demonstrated performance on a structured light scanning system.
Potential for streamlined 3D scanning calibration processes.

Conclusions:

The proposed automatic method effectively calibrates turntable axes.
Eliminates the need for manual calibration artifacts.
Offers a more efficient and accessible approach to 3D scanner calibration.