Stuart Robson
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View article: Estimation of Surface Normals of Aerospace Fasteners from 3D Terrestrial Laser Scanner Point Clouds
Estimation of Surface Normals of Aerospace Fasteners from 3D Terrestrial Laser Scanner Point Clouds Open
Measurement systems such as laser trackers and 3D imaging systems are being increasingly adopted across the manufacturing industry. These metrology technologies can allow for live, high-precision measurement in a digital system, enabling t…
View article: Virtual Instrument for a Multi-illumination Dome System
Virtual Instrument for a Multi-illumination Dome System Open
A virtual instrument has been developed to study a multi-illumination dome system on digital objects using a camera mounted on top of the dome. The reliability of the blender environment is investigated for simulating the functions of comp…
View article: High-Speed 6DoF Tool Monitoring Using a Low-Cost Photogrammetric System
High-Speed 6DoF Tool Monitoring Using a Low-Cost Photogrammetric System Open
The capability of low-cost photogrammetric systems to provide live six degrees of freedom (6DoF) tracking of multiple objects offers great value in providing high-quality and consistent part production by automated manufacturing systems. H…
View article: Optimizing Incidence Angle and Range for Single-Shot Laser Scanning Point Clouds to Model Aerospace Fasteners
Optimizing Incidence Angle and Range for Single-Shot Laser Scanning Point Clouds to Model Aerospace Fasteners Open
In high-precision manufacturing environments, optical metrology technologies allow on-line checking and validation, offering live digital representations, with the broader potential to create digital manufacturing twins. An established typ…
View article: EXPLORING THE LIMITS OF TERRESTRIAL LASER SCANNERS ON AEROSPACE MATERIALS
EXPLORING THE LIMITS OF TERRESTRIAL LASER SCANNERS ON AEROSPACE MATERIALS Open
Terrestrial laser scanners are powerful measurement devices commonly used for 3D modelling tasks generating large volumes of data with fast acquisition as a first priority. However, these scanners can alternatively be used to produce near …
View article: Editorial for Special Issue: “Advances in Portable 3D Measurement”
Editorial for Special Issue: “Advances in Portable 3D Measurement” Open
In the context of the journal Metrology, portable 3D measurement is focused on manufacturing applications where there are typically demands for high-accuracy 3D data, with uncertainties in the range of a few 10s of micrometres to a few ten…
View article: Wavelength Selection Using a Modified Camera to Improve Image-Based 3D Reconstruction of Heritage Objects
Wavelength Selection Using a Modified Camera to Improve Image-Based 3D Reconstruction of Heritage Objects Open
Tools for image-based 3D-reconstruction are commonly used for cultural heritage applications; however, wider usage has increased variability in the quality of output 3D models. Geometric variations between 3D models acquired with differing…
View article: REGISTRATION AND FEATURE EXTRACTION FROM TERRESTRIAL LASER SCANNER POINT CLOUDS FOR AEROSPACE MANUFACTURING
REGISTRATION AND FEATURE EXTRACTION FROM TERRESTRIAL LASER SCANNER POINT CLOUDS FOR AEROSPACE MANUFACTURING Open
Aircraft wing manufacture is becoming increasingly digitalised. For example, it is becoming possible to produce on-line digital representations of individual structural elements, components and tools as they are deployed during assembly pr…
View article: Random forest classification: A case study of dryland crop cover mapping in the Victorian Mallee using Sentinel-2A, Sentinel-3, and MODIS imagery
Random forest classification: A case study of dryland crop cover mapping in the Victorian Mallee using Sentinel-2A, Sentinel-3, and MODIS imagery Open
Land cover characterises the land surface, which is fundamental information for wind and water erosion management.Of particular interest are different crop types since different crop residues provide different levels of protection against …
View article: Preface
Preface Open
The text of the Tantu Panggĕlaran had for many years held a special interest for me, as it belonged, like Prapañca's Deśawarṇana and the Old Sundanese bujangga Manik, to that small group of literary works which offered a wealth of topograp…
View article: QUANTIFYING DEPTH OF FIELD AND SHARPNESS FOR IMAGE-BASED 3D RECONSTRUCTION OF HERITAGE OBJECTS
QUANTIFYING DEPTH OF FIELD AND SHARPNESS FOR IMAGE-BASED 3D RECONSTRUCTION OF HERITAGE OBJECTS Open
Image-based 3D reconstruction processing tools assume sharp focus across the entire object being imaged, but depth of field (DOF) can be a limitation when imaging small to medium sized objects resulting in variation in image sharpness with…
View article: METROLOGY ENABLED REFLECTION TRANSFORMATION IMAGING TO RECONSTRUCT LOCAL DETAIL IN MANUFACTURED SURFACES
METROLOGY ENABLED REFLECTION TRANSFORMATION IMAGING TO RECONSTRUCT LOCAL DETAIL IN MANUFACTURED SURFACES Open
Understanding the performance of large high performance manufactured structures can require highly accurate dimensional measurement across large volumes with the often conflicting capability to record critical parts of the structure in fin…
View article: Mitigating systematic error in topographic models for geomorphic change detection: accuracy, precision and considerations beyond off‐nadir imagery
Mitigating systematic error in topographic models for geomorphic change detection: accuracy, precision and considerations beyond off‐nadir imagery Open
Unmanned aerial vehicles (UAVs) and structure‐from‐motion photogrammetry enable detailed quantification of geomorphic change. However, rigorous precision‐based change detection can be compromised by survey accuracy problems producing syste…
View article: On virtual auras
On virtual auras Open
Making three-dimensional (3D) models for public-facing cultural heritage applications currently concentrates on creating digitised models that are as photo-realistic as possible. The virtual model should have, if possible, the same informa…
View article: Guidelines on the use of structure‐from‐motion photogrammetry in geomorphic research
Guidelines on the use of structure‐from‐motion photogrammetry in geomorphic research Open
As a topographic modelling technique, structure‐from‐motion (SfM) photogrammetry combines the utility of digital photogrammetry with a flexibility and ease of use derived from multi‐view computer vision methods. In conjunction with the rap…
View article: James_et_al_2012_sample_scale_data
James_et_al_2012_sample_scale_data Open
James et al 2012 - Straightforward reconstruction of 3D surfaces and topography with a camera: Accuracy and geoscience applicationData for 3D surface modelling at the sample-scale (i.e. ~0.1 m). The sample is a volcanic bomb from Montserra…
View article: James et al 2012 Straightforward reconstruction of 3D surfaces and topography with a camera: Accuracy and geoscience application
James et al 2012 Straightforward reconstruction of 3D surfaces and topography with a camera: Accuracy and geoscience application Open
Example data from:James MR, Robson S. 2012. Straightforward reconstruction of 3D surfaces and topography with a camera: Accuracy and geoscience application. Journal of Geophysical Research 117: F03017. DOI: 10.1029/2011JF002289
View article: SPECTRAL AND 3D CULTURAL HERITAGE DOCUMENTATION USING A MODIFIED CAMERA
SPECTRAL AND 3D CULTURAL HERITAGE DOCUMENTATION USING A MODIFIED CAMERA Open
Spectral and 3D imaging techniques are used for museum imaging and cultural heritage documentation providing complementary information to aid in documenting the condition, informing the care, and increasing our understanding of objects. Sp…
View article: 3D Reconstruction in an Illumination Dome
3D Reconstruction in an Illumination Dome Open
The illumination dome provides a stable environment for photography of cultural heritage objects with multi-directional lighting. Photogrammetry for 3D reconstruction, on the other hand, is usually based on an image set taken under ambient…
View article: OBJECT-BASED TEACHING AND LEARNING FOR A CRITICAL ASSESSMENT OF DIGITAL TECHNOLOGIES IN ARTS AND CULTURAL HERITAGE
OBJECT-BASED TEACHING AND LEARNING FOR A CRITICAL ASSESSMENT OF DIGITAL TECHNOLOGIES IN ARTS AND CULTURAL HERITAGE Open
As cultural sector practice becomes increasingly dependent on digital technologies for the production, display, and dissemination of art and material heritage, it is important that those working in the sector understand the basic scientifi…
View article: How is museum lighting selected? An insight into current practice in UK museums
How is museum lighting selected? An insight into current practice in UK museums Open
The results of a series of interviews with museum professionals on the subject of museum lighting specification and selection are reported, with the aim that this report should provide an insight into current practice. Specific attention i…
View article: Estimating Chromatic Adaptation in a Museum Environment Using a Tablet Computer
Estimating Chromatic Adaptation in a Museum Environment Using a Tablet Computer Open
Conference proceeding, AIC 2016
View article: Optimised multi-camera systems for dimensional control in factory environments
Optimised multi-camera systems for dimensional control in factory environments Open
As part of the United Kingdom’s Light Controlled Factory project, University College London aims to develop a large-scale multi-camera system for dimensional control tasks in manufacturing, such as part assembly and tracking. Accuracy requ…
View article: ACCURACY OF 3D RECONSTRUCTION IN AN ILLUMINATION DOME
ACCURACY OF 3D RECONSTRUCTION IN AN ILLUMINATION DOME Open
The accuracy of 3D surface reconstruction was compared from image sets of a Metric Test Object taken in an illumination dome by two methods: photometric stereo and improved structure-from-motion (SfM), using point cloud data from a 3D colo…
View article: A METHOD TO ACHIEVE LARGE VOLUME, HIGH ACCURACY PHOTOGRAMMETRIC MEASUREMENTS THROUGH THE USE OF AN ACTIVELY DEFORMABLE SENSOR MOUNTING PLATFORM
A METHOD TO ACHIEVE LARGE VOLUME, HIGH ACCURACY PHOTOGRAMMETRIC MEASUREMENTS THROUGH THE USE OF AN ACTIVELY DEFORMABLE SENSOR MOUNTING PLATFORM Open
When using any optical measurement system one important factor to consider is the placement of the sensors in relation to the workpiece being measured. When making decisions on sensor placement compromises are necessary in selecting the be…