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Professor SAMANTA PIANO's Outputs (68)

Generation and categorisation of surface texture data using a modified progressively growing adversarial network (2021)
Journal Article
Eastwood, J., Newton, L., Leach, R., & Piano, S. (2022). Generation and categorisation of surface texture data using a modified progressively growing adversarial network. Precision Engineering, 74, 1-11. https://doi.org/10.1016/j.precisioneng.2021.10.020

As machine learning becomes more popular in the precision engineering sector, the need for large datasets of measurement data increases. Due to the often manual, user dependent and labour-intensive measurement processes, collecting a large amount of... Read More about Generation and categorisation of surface texture data using a modified progressively growing adversarial network.

Finite element modelling of defects in additively manufactured strut-based lattice structures (2021)
Journal Article
Echeta, I., Dutton, B., Leach, R. K., & Piano, S. (2021). Finite element modelling of defects in additively manufactured strut-based lattice structures. Additive Manufacturing, 47, Article 102301. https://doi.org/10.1016/j.addma.2021.102301

Strut-based lattice structures produced by powder bed fusion are prone to characteristic manufacturing defects that alter both their form and surface texture. Most studies in the literature focus on a subset of commonly observed defects, typically ra... Read More about Finite element modelling of defects in additively manufactured strut-based lattice structures.

Automated assessment of measurement quality in optical coordinate metrology of complex freeform parts (2021)
Presentation / Conference Contribution
Catalucci, S., Senin, N., Piano, S., & Leach, R. (2021, June). Automated assessment of measurement quality in optical coordinate metrology of complex freeform parts. Presented at 21st International euspen Conference and Exhibition, Virtual

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.

General Expressions for the Quantum Fisher Information Matrix with Applications to Discrete Quantum Imaging (2021)
Journal Article
Fiderer, L. J., Tufarelli, T., Adesso, G., & Piano, S. (2021). General Expressions for the Quantum Fisher Information Matrix with Applications to Discrete Quantum Imaging. PRX Quantum, 2(2), Article 020308. https://doi.org/10.1103/prxquantum.2.020308

The quantum Fisher information matrix is a central object in multiparameter quantum estimation theory. It is usually challenging to obtain analytical expressions for it because most calculation methods rely on the diagonalization of the density matri... Read More about General Expressions for the Quantum Fisher Information Matrix with Applications to Discrete Quantum Imaging.

Characterisation of a multi-view fringe projection system based on the stereo matching of rectified phase maps (2021)
Journal Article
Shaheen, A., Sims-Waterhouse, D., Bointon, P., Takushima, S., Piano, S., & Leach, R. K. (2021). Characterisation of a multi-view fringe projection system based on the stereo matching of rectified phase maps. Measurement Science and Technology, 32(4), Article 045006. https://doi.org/10.1088/1361-6501/abd445

Multi-view fringe projection systems can be effective solutions to address the limitations imposed by the limited field of view, line-of-sight issues and occlusions when measuring the geometry of
complex objects, associated with single camera-projec... Read More about Characterisation of a multi-view fringe projection system based on the stereo matching of rectified phase maps.

Laser triangulation (2020)
Book Chapter
Isa, M. A., Piano, S., & Leach, R. Laser triangulation. In R. Leach (Ed.), Advances in Optical Form and Coordinate Metrology. IOP Publishing. https://doi.org/10.1088/978-0-7503-2524-0ch3

This chapter gives a summary of laser triangulation as a measurement technique and outlines recent applications and challenges.

Real-time target alignment system for high-power high-repetition rate laser operations using a five degree-of-freedom hybrid mechanism (2020)
Journal Article
Karim, S., Piano, S., Branson, D., Santoso, T., Leach, R., & Tolley, M. (2022). Real-time target alignment system for high-power high-repetition rate laser operations using a five degree-of-freedom hybrid mechanism. International Journal of Control, 95(4), 867-885. https://doi.org/10.1080/00207179.2020.1827297

This paper presents a real-time position control solution for the targets used in the high-repetition rate laser operations of large-scale high-power laser facilities. The design of the control system is based on an Abbe-compliant, in-process positio... Read More about Real-time target alignment system for high-power high-repetition rate laser operations using a five degree-of-freedom hybrid mechanism.

Optimisation of camera positions for optical coordinate measurement based on visible point analysis (2020)
Journal Article
Zhang, H., Eastwood, J., Isa, M., Sims-Waterhouse, D., Leach, R., & Piano, S. (2021). Optimisation of camera positions for optical coordinate measurement based on visible point analysis. Precision Engineering, 67, 178-188. https://doi.org/10.1016/j.precisioneng.2020.09.016

In optical coordinate measurement using cameras, the number of images, and positions and orientations of the cameras, are critical to object accessibility and the accuracy of a measurement. In this paper, we propose a technique to optimise the number... Read More about Optimisation of camera positions for optical coordinate measurement based on visible point analysis.

Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology (2020)
Journal Article
Isa, M. A., Sims-Waterhouse, D., Piano, S., & Leach, R. (2020). Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology. Precision Engineering, 64, 188-199. https://doi.org/10.1016/j.precisioneng.2020.04.010

Optical three-dimensional coordinate measurement using stereo vision has systematic errors that affect measurement quality. This paper presents a scheme for measuring, modelling and correcting these errors. The position and orientation of a linear st... Read More about Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology.

Real-time target alignment system for high-power high-repetition rate laser operations using a five degree-of-freedom hybrid mechanism (2020)
Journal Article
Leach, R., Branson, D., Karim, S., Tolley, M., Piano, S., & Santoso, T. (2020). Real-time target alignment system for high-power high-repetition rate laser operations using a five degree-of-freedom hybrid mechanism. International Journal of Control, 95(4), 867-885. https://doi.org/10.1080/00207179.2020.1827297

This paper presents a real-time position control solution for the targets used in the high-repetition rate laser operations of high-power laser facilities. The control system is designed based on an Abbe-compliant, in-process position measurement sys... Read More about Real-time target alignment system for high-power high-repetition rate laser operations using a five degree-of-freedom hybrid mechanism.

Review of defects in lattice structures manufactured by powder bed fusion (2019)
Journal Article
Echeta, I., Dutton, B., Feng, X., Leach, R., & Piano, S. (2020). Review of defects in lattice structures manufactured by powder bed fusion. International Journal of Advanced Manufacturing Technology, 106(5-6), 2649–2668. https://doi.org/10.1007/s00170-019-04753-4

Additively manufactured lattice structures are popular due to their desirable properties, such as high specific stiffness and high surface area, and are being explored for several applications including aerospace components, heat exchangers and biome... Read More about Review of defects in lattice structures manufactured by powder bed fusion.

Uncertainty model for a traceable stereo-photogrammetry system (2019)
Journal Article
Sims-Waterhouse, D., Isa, M., Piano, S., & Leach, R. (2020). Uncertainty model for a traceable stereo-photogrammetry system. Precision Engineering, 63, 1-9. https://doi.org/10.1016/j.precisioneng.2019.12.008

Through the computational modelling and experimental verification of a stereo-photogrammetry system, the expanded uncertainty on form measurement was estimated and was found to be , and for a 95% confidence interval (coverage factors of = 3.2, 2.0... Read More about Uncertainty model for a traceable stereo-photogrammetry system.

Automated characterisation of multi-view fringe projection system for three- dimensional measurement of additively manufactured parts (2019)
Presentation / Conference Contribution
Leach, R. K., Shaheen, A., Piano, S., Sims-Waterhouse, D., & Bointon, P. (2019, September). Automated characterisation of multi-view fringe projection system for three- dimensional measurement of additively manufactured parts. Presented at Special Interest Group Meeting: Advancing Precision in Additive Manufacturing, Ecole Centrale de Nantes, Nantes, France

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.

Towards superresolution surface metrology: quantum estimation of angular and axial separations (2019)
Journal Article
Napoli, C., Piano, S., Leach, R., Adesso, G., & Tufarelli, T. (2019). Towards superresolution surface metrology: quantum estimation of angular and axial separations. Physical Review Letters, 122(14), Article 140505. https://doi.org/10.1103/physrevlett.122.140505

We investigate the localization of two incoherent point sources with arbitrary angular and axial separations in the paraxial approximation. By using quantum metrology techniques, we show that a simultaneous estimation of the two separations is achiev... Read More about Towards superresolution surface metrology: quantum estimation of angular and axial separations.

Metrological design of calibration and benchmarking artefacts for an additive manufacturing system (2018)
Presentation / Conference Contribution
Rivas Santos, V., Sims-Waterhouse, D., Piano, S., Maskery, I., Leach, R., Papastavrou, M., Ellis, A., & Woolliams, P. (2017, October). Metrological design of calibration and benchmarking artefacts for an additive manufacturing system. Presented at Joint Special Interest Group meeting between euspen and ASPE Dimensional Accuracy and Surface Finish in Addictive Manufacturing, Katholieke Universiteit Leuven, Belgium, October 2017

Error modelling and validation of a high-precision five degree of freedom hybrid mechanism for high-power high-repetition rate laser operations (2018)
Journal Article
Karim, S., Piano, S., Leach, R. K., & Tolley, M. (2018). Error modelling and validation of a high-precision five degree of freedom hybrid mechanism for high-power high-repetition rate laser operations. Precision Engineering, 54, 182-197. https://doi.org/10.1016/j.precisioneng.2018.04.018

The accuracy, repeatability and speed requirements of high-power laser operations demand the employment of five degree of freedom motion control solutions that are capable of positioning and orientating the target with respect to the laser(s)-target... Read More about Error modelling and validation of a high-precision five degree of freedom hybrid mechanism for high-power high-repetition rate laser operations.