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All Outputs (61)

High-accuracy robotic metrology for precise industrial manipulation tasks (2023)
Conference Proceeding
Isa, M. A., Khanesar, M. A., Leach, R. K., Branson, D., & Piano, S. (2023). High-accuracy robotic metrology for precise industrial manipulation tasks. . https://doi.org/10.1117/12.2673088

The majority of industrial production processes can be divided into a series of object manipulation and handling tasks that can be adapted for robots. Through significant advances in compliant grasping, sensing and actuation technologies, robots are... Read More about High-accuracy robotic metrology for precise industrial manipulation tasks.

Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement (2023)
Conference Proceeding
Hooshmand, H., Liu, M., Pappas, A., Thompson, A., Leach, R., & Piano, S. (2023). Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement.

The most common optical technologies for surface topography measurement are coherence scanning interferometry (CSI), focus variation microscopy (FV) and imaging confocal microscopy (CM). Due to the benefits and drawbacks of each, these instruments ar... Read More about Comparison of coherence scanning interferometry, focus variation and confocal microscopy for surface topography measurement.

Quantifying the validity conditions of the Beckmann-Kirchhoff scattering model (2022)
Conference Proceeding
Hooshmand, H., Liu, M., Leach, R., & Piano, S. (2022). Quantifying the validity conditions of the Beckmann-Kirchhoff scattering model. In D. Kim, H. Choi, & H. Ottevaere (Eds.), Proc. SPIE 12221, Optical Manufacturing and Testing XIV. https://doi.org/10.1117/12.2639003

Approximate and rigorous methods are widely used to model light scattering from a surface. The boundary element method (BEM) is a rigorous model that accounts for polarisation and multiple scattering effects. BEM is suitable to model the scattered li... Read More about Quantifying the validity conditions of the Beckmann-Kirchhoff scattering model.

Frequency scanning interferometry for accurate robot position measurement (2022)
Conference Proceeding
Isa, M. A., Khanesar, M. A., Leach, R., Branson, D., & Piano, S. (2022). Frequency scanning interferometry for accurate robot position measurement. In Proceedings of 22nd International Conference & Exhibition

This paper presents a frequency scanning interferometry (FSI) shortwave infrared (IR) setup developed for position and orientation measurement of industrial robots. Within contemporary and future industrial frameworks, robots—in particular collaborat... Read More about Frequency scanning interferometry for accurate robot position measurement.

Fourier optics modelling of coherence scanning interferometers (2021)
Conference Proceeding
de Groot, P. J., Colonna de Lega, X., Su, R., Coupland, J., & Leach, R. K. (2021). Fourier optics modelling of coherence scanning interferometers. In SPIE OPTICAL ENGINEERING + APPLICATIONS. https://doi.org/10.1117/12.2595668

We propose an instrument model for coherence scanning interferometry using familiar Fourier optics methods, the spectrum of plane waves, and the assumption that the light source spectral bandwidth is the dominant factor in determining fringe contrast... Read More about Fourier optics modelling of coherence scanning interferometers.

Automated assessment of measurement quality in optical coordinate metrology of complex freeform parts (2021)
Conference Proceeding
Catalucci, S., Senin, N., Piano, S., & Leach, R. (2021). Automated assessment of measurement quality in optical coordinate metrology of complex freeform parts. In Conference Proceedings: 21st International Conference & Exhibition

The measurement of complex freeform geometries represents a fundamental challenge for quality assurance in the production of high value-added parts, in particular when additive manufacturing technologies are involved. In addition, the increasing adva... Read More about Automated assessment of measurement quality in optical coordinate metrology of complex freeform parts.

Automated characterisation of multi-view fringe projection system for three- dimensional measurement of additively manufactured parts (2019)
Conference Proceeding
Leach, R. K., Shaheen, A., Piano, S., Sims-Waterhouse, D., & Bointon, P. (2019). Automated characterisation of multi-view fringe projection system for three- dimensional measurement of additively manufactured parts

Digital fringe projection is a non-contact method that is widely used for the dimensional characterisation of complex manufactured parts. However, single camera-projector fringe projection systems struggle to acquire the full three-dimensional point... Read More about Automated characterisation of multi-view fringe projection system for three- dimensional measurement of additively manufactured parts.

Comparison of two noise reduction methods in coherence scanning interferometry for surface measurement (2019)
Conference Proceeding
Gomez, C., Su, R., Lawes, S., & Leach, R. (2019). Comparison of two noise reduction methods in coherence scanning interferometry for surface measurement

Coherence scanning interferometry (CSI) can measure relatively flat surfaces with sub-nanometre precision, but the measurement noise may increase significantly if the intensity of the interferometric signal reduces when measuring non-flat surfaces or... Read More about Comparison of two noise reduction methods in coherence scanning interferometry for surface measurement.

Modelling Fringe Projection Based on Linear Systems Theory and Geometric Transformation (2019)
Conference Proceeding
Gayton, G., Su, R., & Leach, R. (2019). Modelling Fringe Projection Based on Linear Systems Theory and Geometric Transformation

Fringe projection measurement techniques offer fast, non-contact measurements of the surface form of manufactured parts at relatively low cost. Recent advances in fringe projection have reduced measurement errors from effects such as multiple surface... Read More about Modelling Fringe Projection Based on Linear Systems Theory and Geometric Transformation.

Uncertainty evaluation of fringe projection based on the linear systems theory (2019)
Conference Proceeding
Gayton, G., Su, R., Leach, R., & Bradley, L. (2019). Uncertainty evaluation of fringe projection based on the linear systems theory

Fringe projection techniques offer fast, non-contact measurements of the surface form of manufactured parts. Fringe projection has seen successful implementation in the automotive, aerospace and medical industries. Recently, advances in fringe projec... Read More about Uncertainty evaluation of fringe projection based on the linear systems theory.

Automated assessment of object coverage in smart, optical form measurement (2019)
Conference Proceeding
Catalucci, S., Senin, N., Stavroulakis, P., & Leach, R. (2019). Automated assessment of object coverage in smart, optical form measurement. In Proceedings of 19th International euspen Conference & Exhibition

As part of a project to develop a smart 3D form measurement system for quality control of complex 3D parts, we present early work in algorithmic assessment of coverage achieved on the surfaces of a part subjected to optical measurement from a single... Read More about Automated assessment of object coverage in smart, optical form measurement.