Prof. Robert Sitnik Profile

Prof. Robert Sitnik

Professor at Warsaw Univ of Technology

SPIE Involvement:

Author | Editor

Area of Expertise:

3D imaging , 3D scanning , 3D visualization , optical metrology , 3D data processing

Websites:

Company Website

Publications (60)

Proceedings Article | 8 July 2021 Presentation + Paper

Classification of surface geometry behavior of cultural heritage surfaces based on monitoring change

Sunita Saha, Amalia Siatou, Robert Sitnik

Proceedings Volume 11784, 117840H (2021) https://doi.org/10.1117/12.2592387

KEYWORDS: Cultural heritage, Clouds, Data modeling, Algorithm development, Visualization, Spherical lenses, Data processing, 3D scanning, 3D modeling

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Proceedings Article | 12 July 2019 Presentation + Paper

Monitoring surface degradation process by 3D structured light scanning

R. Sitnik, K. Lech, E. Bunsch, J. Michoński

Proceedings Volume 11058, 1105811 (2019) https://doi.org/10.1117/12.2525668

KEYWORDS: 3D metrology, 3D scanning, Structured light, Data processing

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Proceedings Article | 11 April 2019 Paper

Semi-automated method for views integration based on alternative color and geometry characteristics

Piotr Foryś, Krzysztof Lech, Jakub Michoński, Łukasz Markiewicz, Eryk Bunsch, Robert Sitnik

Proceedings Volume 11028, 1102829 (2019) https://doi.org/10.1117/12.2521135

KEYWORDS: Clouds, Visualization, Data modeling, Cultural heritage, 3D modeling, Scanners, 3D scanning

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Proceedings Article | 8 October 2018 Presentation + Paper

Novel active-SfM solution for three-dimensional crime scene documentation

Krzysztof Lech, Krzysztof Mularczyk, Jakub Michonski, Kamil Januszkiewicz, Robert Sitnik

Proceedings Volume 10802, 108020C (2018) https://doi.org/10.1117/12.2502095

KEYWORDS: Projection systems, 3D modeling, Cameras, 3D metrology, Forensic science, Clouds, Laser scanners, Photography, Light sources and illumination

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As forensic science technologies progress, digital photography in the crime scene documentation is being replaced in favor of high-precision 3D measurements. Three-dimensional documentation presents every object in the context of the entire crime scene and allows accurate measurements between potentially important traces, like bloodstains or weapons. These and other advanced 3D documentation and analysis tools have improved the possibilities of investigation to a previously unattainable level. We present a novel solution for detailed 3D documentation, which overcomes the limitations of commonly used 3D measurement techniques, e.g. highly accurate Structured Light Scanning or convenient to use Structure from Motion. Our solution, called active-SfM, involves the use of special projection devices to project a random pattern on the part of the scene under measurement. This modification makes the measurement process robust and reliable, even when measuring featureless surfaces. The reconstructed 3D model has better quality and surface uniformity than the result of standard Structure from Motion measurements. Moreover, the acquisition process remains as quick and easy to use as before the modifications.

We present newly developed equipment: wireless projection devices and controllers, that were designed especially to be used by forensic technicians on crime scenes and that are compatible with stock cameras used by them in everyday practice. We also present a full set of developed algorithms that transform input images into the final 3D model.

The proposed solution complements the hierarchical, three-dimensional measurement system developed in recent years by Polish Central Forensic Laboratory of the Police, CYBID Ltd., and Warsaw University of Technology, designed especially for crime scene documentation. The whole documentation process is supervised by a specialized CrimeView3D application, a software platform for measurement management and data visualization. We also present the outcome of measurement sessions that were conducted on both simulated and real crime scenes with the cooperation of Technicians from Central Forensic Laboratory of Police.

Proceedings Article | 7 September 2018 Paper

A multidirectional system for shape measurement of a human body in motion

Paweł Liberadzki, Marcin Witkowski, Robert Sitnik

Proceedings Volume 10834, 108341E (2018) https://doi.org/10.1117/12.2318731

KEYWORDS: Clouds, Sensors, Motion measurement, Projection systems, Structured light, Image analysis, Optical filters, Calibration, Computing systems, Data processing

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Proceedings Article | 7 September 2018 Paper

The method of acquiring and processing 3D data from drones

J. Rutkiewicz, M. Malesa, M. Karaszewski, P. Foryś, P. Siekański, R. Sitnik

Proceedings Volume 10834, 1083425 (2018) https://doi.org/10.1117/12.2319717

KEYWORDS: Cameras, Clouds, LIDAR, 3D image processing, Data processing, 3D metrology, 3D acquisition, Infrared cameras, Data acquisition

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Rapid development of machine learning techniques opens new application fields for Unmanned Aerial Vehicles technology, which include detection and classification of objects. It is possible to detect buildings, vehicles or various objects present near pipelines and industrial buildings. In some cases, such as monitoring of the critical infrastructure, accuracy of the detection is crucial. 2D data classification enables detecting an object and determining its basic parameters. 3D data, that can be obtained from drones, supplement 2D data, and can significantly increase the accuracy of detection and classification of objects. It also bares additional information and can simplify determination of dimensions of already classified objects. Furthermore, some objects, difficult for classification using 2D images, can be easily classified with 3D data. Such objects are for example: excavations in the ground, objects partially overshadowed by trees or fully covered by dried leaves. 3D data collected by drones is typically obtained with SfM (Structure from Motion) and Lidar (Light Detection and Ranging) methods. SfM provides three-dimensional data from the photos that have been collected for 2D analysis. The advantage of this method is high quality texture. The main problem is that this method is not useful for night flights due to lack of feature points on images. Lidar is a laser measurement method using data on the time of flight of a laser beam reflected from an obstacle (object). It allows to obtain 3D data in all light conditions. However, collected data does not have color information. The combination of both methods will provide dense and accurate point clouds with texture, which can be consequently used for detection and classification of objects. In this paper a pipeline for acquisition, merging and processing of 3D data gathered by drones is presented. The first step is to obtain assembled point clouds from Lidar in one coordinate system using GPS data. Then Lidar point cloud is integrated with SfM point clouds. 3D data generated this way also includes coordinates of camera in the moments when SfM photos were collected. The full 3D model of monitored area containing GPS coordinates and positions of camera may be used to simplify configuration of a supplementary flight in order to measure places where no measurement data was obtained or the density of point cloud was too low. Having a point cloud of the reconstructed object prepared in such way, it is possible to compare point clouds, features extracted from point clouds and geometry of already classified objects over time.

Proceedings Article | 5 October 2017 Presentation + Paper

Three-dimensional measurement system for crime scene documentation

Marcin Adamczyk, Elwira Hołowko, Krzysztof Lech, Jakub Michoński, Grzegorz Mączkowski, Paweł Bolewicki, Kamil Januszkiewicz, Robert Sitnik

Proceedings Volume 10441, 104410A (2017) https://doi.org/10.1117/12.2278489

KEYWORDS: 3D scanning, Scanners, 3D metrology, Laser scanners, Blood, 3D modeling, 3D visualizations, Forensic science, Surveillance, Computing systems

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Proceedings Article | 23 August 2017 Presentation + Paper

Multimodal and synthetic aperture approach to full-field 3D shape and displacement measurements

M. Kujawińska, R. Sitnik

Proceedings Volume 10373, 103730Q (2017) https://doi.org/10.1117/12.2280861

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Proceedings Article | 6 March 2014 Paper

New concept of technology chain for 3D/4D content generation and display

M. Kujawińska, R. Sitnik, T. Kozacki

Proceedings Volume 9013, 90130A (2014) https://doi.org/10.1117/12.2040781

KEYWORDS: Holography, 3D image processing, 3D displays, Holograms, Spatial light modulators, Imaging systems, Image resolution, Video, Digital holography, Structured light

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Proceedings Article | 28 February 2014 Paper

Recent improvements in SPE3D: a VR-based surgery planning environment

Marcin Witkowski, Robert Sitnik, Nico Verdonschot

Proceedings Volume 9012, 90120E (2014) https://doi.org/10.1117/12.2041445

KEYWORDS: Surgery, 3D modeling, Magnetic resonance imaging, Data modeling, Haptic technology, Visualization, Bone, Visual process modeling, Navigation systems, Human-machine interfaces

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Proceedings Article | 24 February 2014 Paper

Method for visualization and presentation of priceless old prints based on precise 3D scan

Eryk Bunsch, Robert Sitnik

Proceedings Volume 9018, 90180Q (2014) https://doi.org/10.1117/12.2042635

KEYWORDS: Visualization, Clouds, 3D scanning, 3D metrology, Projection systems, Head, Ultraviolet radiation, Light sources, Humidity, Infrared radiation

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Proceedings Article | 25 October 2013 Paper

Mechatronics in monitoring, simulation, and diagnostics of industrial and biological processes

Natalia Golnik, Marek Dobosz, Małgorzata Jakubowska, Jan Kościelny, Małgorzata Kujawińska, Tadeusz Pałko, Barbara Putz, Robert Sitnik, Paweł Wnuk, Adam Woźniak

Proceedings Volume 8903, 890313 (2013) https://doi.org/10.1117/12.2035523

KEYWORDS: Sensors, Semiconducting wafers, Control systems, Interferometers, Mechatronics, Diagnostics, Inspection, Head, Opto mechatronics, Glasses

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Proceedings Article | 25 October 2013 Paper

Surface shape measurement of specular objects using laser deflectometry

Jakub Michoński, Krzysztof Mularczyk, Robert Sitnik

Proceedings Volume 8903, 890305 (2013) https://doi.org/10.1117/12.2031718

KEYWORDS: Deflectometry, Sensors, Cultural heritage, Imaging systems, Calibration, Laser systems engineering, Ray tracing, Reflection, 3D modeling, Mirrors

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SPIE Journal Paper | 30 May 2013 Open Access

Lower body kinematics evaluation based on a multidirectional four-dimensional structured light measurement

Janusz Lenar, Marcin Witkowski, Vincenzo Carbone, Sjoerd Kolk, Marcin Adamczyk, Robert Sitnik, Marjolein van der Krogt, Nico Verdonschot

JBO, Vol. 18, Issue 05, 056014, (May 2013) https://doi.org/10.1117/12.10.1117/1.JBO.18.5.056014

KEYWORDS: Kinematics, Cameras, Gait analysis, 3D modeling, Clouds, Calibration, Projection systems, Motion models, Systems modeling, Structured light

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Proceedings Article | 30 May 2013 Paper

Automated full-3D digitization system for documentation of paintings

Maciej Karaszewski, Marcin Adamczyk, Robert Sitnik, Jakub Michoński, Wojciech Załuski, Eryk Bunsch, Paweł Bolewicki

Proceedings Volume 8790, 87900X (2013) https://doi.org/10.1117/12.2020447

KEYWORDS: Head, 3D modeling, Projection systems, 3D metrology, Visualization, Servomechanisms, Cameras, Prototyping, Ultraviolet radiation, Calibration

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Proceedings Article | 23 May 2013 Paper

View integration technique using multi-resolution point clouds in 3D modeling

E. Hołowko, R. Sitnik

Proceedings Volume 8791, 87910D (2013) https://doi.org/10.1117/12.2020537

KEYWORDS: Data modeling, 3D modeling, Clouds, Sensors, Laser scanners, 3D metrology, Scanners, Projection systems, 3D scanning, Structured light

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Proceedings Article | 12 March 2013 Paper

Novel calibration procedure for SVBRDF estimation of 3D objects using directional illumination and structured light projection

Jakub Krzesłowski, Robert Sitnik, Grzegorz Mączkowski

Proceedings Volume 8650, 86500G (2013) https://doi.org/10.1117/12.2008454

KEYWORDS: Calibration, Fiber optic illuminators, Cameras, Light sources, Reflectivity, 3D image processing, 3D modeling, Bidirectional reflectance transmission function, Visualization, Image processing

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SPIE Journal Paper | 11 May 2012 Open Access

Automatic recognition of surface landmarks of anatomical structures of back and posture

Jakub Michonski, Marcin Witkowski, Robert Sitnik, Wojciech Glinkowski

JBO, Vol. 17, Issue 5, 056015, (May 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.5.056015

KEYWORDS: Data modeling, Algorithm development, Statistical analysis, Shape analysis, Clouds, Spine, 3D modeling, Detection and tracking algorithms, Statistical modeling, X-rays

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SPIE Journal Paper | 8 March 2012

Archiving shape and appearance of cultural heritage objects using structured light projection and multispectral imaging

Robert Sitnik, Jakub Krzeslowski, Grzegorz Maczkowski

OE, Vol. 51, Issue 02, 021115, (March 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.2.021115

KEYWORDS: Cultural heritage, Bidirectional reflectance transmission function, Reflectivity, Cameras, Light sources, 3D image processing, Optical filters, Multispectral imaging, Sensors, Structured light

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Proceedings Article | 21 February 2012 Paper

Tracking the aging process by multiple 3D scans analysis

Eryk Bunsch, Robert Sitnik, Jakub Michonski

Proceedings Volume 8291, 82911G (2012) https://doi.org/10.1117/12.908024

KEYWORDS: Visualization, Calibration, 3D scanning, Sensors, Surface finishing, Clouds, Phase measurement, Projection systems, Crystals, 3D acquisition

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Proceedings Article | 8 February 2012 Paper

A virtual reality interface for pre-planning of surgical operations based on a customized model of the patient

Marcin Witkowski, Janusz Lenar, Robert Sitnik, Nico Verdonschot

Proceedings Volume 8289, 82890M (2012) https://doi.org/10.1117/12.909857

KEYWORDS: Surgery, Human-machine interfaces, 3D modeling, 3D displays, Navigation systems, Bone, Data modeling, Virtual reality, Haptic technology, Biological research

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Proceedings Article | 31 January 2012 Paper

Multidirectional four-dimensional shape measurement system

Janusz Lenar, Robert Sitnik, Marcin Witkowski

Proceedings Volume 8290, 82900W (2012) https://doi.org/10.1117/12.907706

KEYWORDS: Head, Projection systems, Clouds, Calibration, 3D metrology, Kinematics, 3D image processing, Cameras, Data modeling, Structured light

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Proceedings Article | 6 June 2011 Paper

Study on the currently accessible technology for 3D printing of color objects from the reproduction quality standpoint

Robert Sitnik, Grzegorz Mączkowski, Jakub Krzesłowski, Tomasz Gadzinski

Proceedings Volume 8084, 80840M (2011) https://doi.org/10.1117/12.889442

KEYWORDS: 3D printing, 3D metrology, Reflectivity, Cultural heritage, System integration, 3D modeling, Current controlled current source, Digital Light Processing, Projection systems, Structured light

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Proceedings Article | 27 May 2011 Paper

New structured light measurement and calibration method for 3D documenting of engineering structures

Robert Sitnik, Małgorzata Kujawińska, Paweł Błaszczyk

Proceedings Volume 8082, 808218 (2011) https://doi.org/10.1117/12.889403

KEYWORDS: Calibration, Sensors, Projection systems, 3D metrology, Structural engineering, Optical spheres, Metals, Optical testing, Distance measurement, Structured light

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Proceedings Article | 8 March 2011 Paper

Art documentation quality in function of 3D scanning resolution and precision

Eryk Bunsch, Robert Sitnik, Jakub Michonski

Proceedings Volume 7869, 78690D (2011) https://doi.org/10.1117/12.876647

KEYWORDS: 3D scanning, Visualization, 3D metrology, Calibration, Sensors, Projection systems, Photography, Clouds, Image resolution, Structured light

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Proceedings Article | 27 January 2011 Paper

Data processing path from multimodal 3D measurement to realistic virtual model

Robert Sitnik, Jakub Krzeslowski, Grzegorz Mączkowski

Proceedings Volume 7864, 786411 (2011) https://doi.org/10.1117/12.872200

KEYWORDS: Clouds, Data modeling, 3D modeling, Data processing, 3D metrology, Reflectivity, Bidirectional reflectance transmission function, RGB color model, Calibration, Visualization

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Proceedings Article | 12 October 2010 Paper

Hierarchical, multitasks optical system for health monitoring of civil engineering structures

M. Kujawinska, R. Sitnik, G. Dymny, M. Malesa, K. Malowany, D. Szczepanek

Proceedings Volume 7387, 738721 (2010) https://doi.org/10.1117/12.883978

KEYWORDS: Sensors, Digital image correlation, Cameras, Calibration, Bridges, Projection systems, 3D metrology, Civil engineering, Finite element methods, Visualization

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Proceedings Article | 11 May 2010 Paper

Documentation instead of visualization - applications of 3D scanning in works of art analysis

Eryk Bunsch, Robert Sitnik

Proceedings Volume 7531, 75310I (2010) https://doi.org/10.1117/12.839193

KEYWORDS: Calibration, 3D scanning, Visualization, 3D metrology, Sensors, Visual analytics, Clouds, Projection systems, Standards development, Structured light

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Proceedings Article | 4 February 2010 Paper

Integrated shape, color, and reflectivity measurement method for 3D digitization of cultural heritage objects

Robert Sitnik, Grzegorz Mączkowski, Jakub Krzesłowski

Proceedings Volume 7526, 75260Q (2010) https://doi.org/10.1117/12.839166

KEYWORDS: Reflectivity, 3D metrology, Optical filters, Light sources, Sensors, Cultural heritage, Cameras, Visualization, Clouds, 3D image processing

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Proceedings Article | 4 February 2010 Paper

Automation of 3D scan data capturing and processing

Robert Sitnik, Maciej Karaszewski, Wojciech Załuski, Jan Rutkiewicz

Proceedings Volume 7526, 75260Y (2010) https://doi.org/10.1117/12.839189

KEYWORDS: Head, Scanners, Clouds, Calibration, 3D metrology, 3D scanning, Data processing, 3D modeling, Data modeling, Kinematics

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Proceedings Article | 4 February 2010 Paper

A four-directional body shape measurement system and its application for pectus excavatum severity assessment

Marcin Witkowski, Wojciech Glinkowski, Robert Sitnik, Hanna Kocoń, Paweł Bolewicki, Andrzej Górecki

Proceedings Volume 7526, 75260P (2010) https://doi.org/10.1117/12.838991

KEYWORDS: Clouds, Chest, 3D metrology, Computed tomography, 3D scanning, 3D image processing, Calibration, Optical testing, Shape analysis, Structured light

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Proceedings Article | 8 July 2009 Paper

Automated full-3D shape measurement of cultural heritage objects

Robert Sitnik, Maciej Karaszewski, Wojciech Zaluski, Pawel Bolewicki

Proceedings Volume 7391, 73910K (2009) https://doi.org/10.1117/12.828004

KEYWORDS: Scanners, Head, Clouds, Calibration, Cultural heritage, 3D metrology, Kinematics, Data modeling, Robotic systems, Structured light

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SPIE Journal Paper | 1 July 2009 Open Access

Method of pectus excavatum measurement based on structured light technique

Wojciech Glinkowski, Robert Sitnik, Marcin Witkowski, Hanna Kocon, Paweł Bolewicki, Andrzej Górecki

JBO, Vol. 14, Issue 04, 044041, (July 2009) https://doi.org/10.1117/12.10.1117/1.3210782

KEYWORDS: 3D metrology, Computed tomography, Chest, 3D scanning, Clouds, 3D image processing, Photonics, Shape analysis, Photography, Structured light

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Proceedings Article | 17 June 2009 Paper

Remote online monitoring and measuring system for civil engineering structures

Malgorzata Kujawińska, Robert Sitnik, Grzegorz Dymny, Maciej Karaszewski, Kuba Michoński, Jakub Krzesłowski, Krzysztof Mularczyk, Paweł Bolewicki

Proceedings Volume 7389, 738904 (2009) https://doi.org/10.1117/12.828002

KEYWORDS: Sensors, Databases, Cameras, Digital image correlation, Civil engineering, Binary data, Intelligence systems, Interferometry, Distributed computing, Data archive systems

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SPIE Journal Paper | 1 July 2008 Open Access

Locating and tracing of anatomical landmarks based on full-field four-dimensional measurement of human body surface

Robert Sitnik, Marcin Witkowski

JBO, Vol. 13, Issue 04, 044039, (July 2008) https://doi.org/10.1117/12.10.1117/1.2960017

KEYWORDS: Clouds, Data processing, Algorithm development, 3D metrology, Skin, Data analysis, Shape analysis, Optical testing, Data acquisition, Surgery

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Proceedings Article | 13 June 2008 Paper

Remote measurements system for applications in photonic materials characterization

P. Lesiak, S. Ertman, D. Budaszewski, A. Domański, T. Woliński, I. Burska, M. Klimczak, R. Piramidowicz, P. Warda, W. Kamiński, R. Sitnik, M. Kujawińska

Proceedings Volume 7120, 71200S (2008) https://doi.org/10.1117/12.804533

KEYWORDS: Luminescence, Data communications, Polarization, Databases, Human-machine interfaces, Internet, Data acquisition, Material characterization, Spectroscopy, Poincaré sphere

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Proceedings Article | 25 February 2008 Paper

Hybrid, contact, and no contact measurement system for industry

Robert Sitnik, Jerzy Sładek, Magdalena Kupiec, Paweł Błaszczyk, Wojciech Załuski

Proceedings Volume 6805, 680503 (2008) https://doi.org/10.1117/12.765910

KEYWORDS: Calibration, Clouds, 3D modeling, Optical testing, Solid modeling, Optical spheres, Metrology, 3D metrology, Algorithm development, Optical calibration

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Proceedings Article | 12 February 2008 Paper

Surface shape parameters and analysis of data captured with use of 4D surface scanners

Marcin Witkowski, Robert Sitnik, Walter Rapp, Bart Haex, Marcin Kowalski, Sven Mooshake

Proceedings Volume 6848, 684815 (2008) https://doi.org/10.1117/12.763987

KEYWORDS: Clouds, Imaging systems, Shape analysis, Data acquisition, Scanners, Skin, Data processing, Motion analysis, Optical spheres, Laser scanners

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Proceedings Article | 8 February 2008 Paper

Internet virtual studio: low-cost augmented reality system for WebTV

Robert Sitnik, Slawomir Pasko, Maciej Karaszewski, Marcin Witkowski

Proceedings Volume 6804, 68040E (2008) https://doi.org/10.1117/12.765914

KEYWORDS: Cameras, Video, Virtual reality, Imaging systems, Internet, Multimedia, Computing systems, 3D video streaming, Augmented reality, Televisions

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Proceedings Article | 21 April 2006 Paper

New concept of fast hybrid contact and no-contact measurement for automotive industry

R. Sitnik, J. Sładek, M. Kupiec, P. Błaszczyk, M. Kujawińska

Proceedings Volume 6198, 619803 (2006) https://doi.org/10.1117/12.663702

KEYWORDS: Clouds, Calibration, Optical testing, 3D modeling, Data modeling, Optical spheres, Solid modeling, Metrology, 3D metrology, Algorithm development

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Proceedings Article | 14 April 2006 Paper

4D measurement system for automatic location of anatomical structures

Marcin Witkowski, Robert Sitnik, Małgorzata Kujawińska, Walter Rapp, Marcin Kowalski, Bart Haex, Sven Mooshake

Proceedings Volume 6191, 61910H (2006) https://doi.org/10.1117/12.663519

KEYWORDS: Clouds, Calibration, 3D metrology, Visualization, Image processing, Raster graphics, Motion analysis, 3D image processing, Data acquisition, Algorithm development

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Proceedings Article | 2 February 2006 Paper

Opto-numerical procedures supporting dynamic lower limbs monitoring and their medical diagnosis

Marcin Witkowski, Malgorzata Kujawińska, Walter Rapp, Robert Sitnik

Proceedings Volume 6026, 60260Y (2006) https://doi.org/10.1117/12.667424

KEYWORDS: Algorithm development, Data processing, Clouds, Medical diagnostics, Spherical lenses, Biomedical optics, Detection and tracking algorithms, Optical spheres, Visualization, Optical testing

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Proceedings Article | 27 January 2006 Paper

4D data processing for dynamic human body analysis

Robert Sitnik, Artur Filipczak, Marcin Witkowski, Walter Rapp, Bart Haex

Proceedings Volume 6056, 60560Q (2006) https://doi.org/10.1117/12.643213

KEYWORDS: Clouds, Bone, Data processing, Algorithm development, Visualization, 3D metrology, Prototyping, Visual analytics, Biological research, 3D imaging standards

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Proceedings Article | 23 September 2005 Paper

Automatic anatomical structures location

Marcin Witkowski, Walter Rapp, Robert Sitnik, Malgorzata Kujawinska, Jos Vander Sloten, Bart Haex, Nico Bogaert, Kjell Heitmann

Proceedings Volume 5959, 59590F (2005) https://doi.org/10.1117/12.623099

KEYWORDS: Algorithm development, Data processing, Visualization, Clouds, Motion analysis, 3D image processing, Raster graphics, Biological research, 3D metrology, Gait analysis

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Proceedings Article | 12 August 2005 Paper

3DMADMAC system: optical 3D shape acquisition and processing path for VR applications

Robert Sitnik, Ma&lstrok;gorzata Kujawinska, Wojciech Za&lstrok;uski

Proceedings Volume 5857, 58570E (2005) https://doi.org/10.1117/12.613018

KEYWORDS: 3D metrology, Clouds, Volume rendering, 3D modeling, 3D acquisition, Virtual reality, Data conversion, Multimedia, Spherical lenses, Optical scanning systems

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Proceedings Article | 13 June 2005 Paper

New method of structure light measurement system calibration based on adaptive and effective evaluation of 3D-phase distribution

Robert Sitnik

Proceedings Volume 5856, (2005) https://doi.org/10.1117/12.613017

KEYWORDS: Calibration, Optical testing, Imaging systems, 3D metrology, Inspection, 3D modeling, Systems modeling, 3D image processing, Geometrical optics

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Proceedings Article | 2 August 2004 Paper

Phase scaling using characteristic polynomials

Robert Sitnik

Proceedings Volume 5532, (2004) https://doi.org/10.1117/12.561224

KEYWORDS: Calibration, Imaging systems, Phase measurement, 3D metrology, Clouds, Systems modeling, 3D modeling, Testing and analysis, Visualization, Reverse modeling

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Proceedings Article | 10 November 2003 Paper

Measurement and data processing uncertainty issues in optical, full-field measurement techniques

Malgorzata Kujawinska, Robert Sitnik

Proceedings Volume 5191, (2003) https://doi.org/10.1117/12.512196

KEYWORDS: Clouds, 3D metrology, Data processing, Data conversion, Optical testing, Data modeling, 3D acquisition, 3D modeling, Fringe analysis, Volume rendering

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Proceedings Article | 24 October 2003 Paper

Reflective low-cost LCD-based shape measurement system for popular multimedia applications

Tomasz Kucharski, Pawel Kniazewski, Robert Sitnik

Proceedings Volume 5125, (2003) https://doi.org/10.1117/12.532392

KEYWORDS: Calibration, 3D metrology, LCDs, Multimedia, Projection systems, Reflectivity, Light, Light emitting diodes, Internet, Clouds

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Proceedings Article | 9 October 2003 Paper

From reality to virtual reality: 3D object imaging techniques and algorithms

Robert Sitnik, Malgorzata Kujawinska

Proceedings Volume 5146, (2003) https://doi.org/10.1117/12.499650

KEYWORDS: 3D metrology, Clouds, 3D image processing, Volume rendering, Multimedia, Virtual reality, Data conversion, Stereoscopy, Spherical lenses, Data processing

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Proceedings Article | 19 June 2002 Paper

Three-dimensional data acquisition and processing for virtual reality applications

Malgorzata Kujawinska, Robert Sitnik, Michal Pawlowski, Piotr Garbat, Marek Wegiel

Proceedings Volume 4778, (2002) https://doi.org/10.1117/12.473572

KEYWORDS: 3D metrology, Calibration, Virtual reality, Cameras, Visualization, Clouds, 3D modeling, 3D acquisition, Imaging systems, 3D image processing

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Proceedings Article | 8 March 2002 Paper

Creating true 3D-shape representation: merging methodologies

Robert Sitnik, Malgorzata Kujawinska

Proceedings Volume 4661, (2002) https://doi.org/10.1117/12.460163

KEYWORDS: Clouds, 3D metrology, Numerical analysis, Visualization, Computing systems, Optical spheres, Projection systems, Robot vision, 3D scanning, Phase modulation

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SPIE Journal Paper | 1 February 2002

Digital fringe projection system for large-volume 360-deg shape measurement

Robert Sitnik, Malgorzata Kujawinska, Jerzy Woznicki

OE, Vol. 41, Issue 02, (February 2002) https://doi.org/10.1117/12.10.1117/1.1430422

KEYWORDS: Calibration, Clouds, Projection systems, 3D metrology, Cameras, CCD cameras, Imaging systems, Digital Light Processing, RGB color model, Optical engineering

SPIE Journal Paper | 1 February 2002

From cloud-of-point coordinates to three-dimensional virtual environment: the data conversion system

Robert Sitnik, Malgorzata Kujawinska

OE, Vol. 41, Issue 02, (February 2002) https://doi.org/10.1117/12.10.1117/1.1430419

KEYWORDS: Clouds, 3D modeling, Computer graphics, Volume rendering, Virtual reality, Data conversion, Optical engineering, 3D metrology, Internet, Systems modeling

Proceedings Article | 23 October 2001 Paper

Long-base optical extensometer for tensile testing machines

Leszek Salbut, Malgorzata Kujawinska, Robert Sitnik, Grzegorz Dymny

Proceedings Volume 4398, (2001) https://doi.org/10.1117/12.445567

KEYWORDS: Optomechanical design, Video, Cameras, Time metrology, Image analysis, Distance measurement, Modulation, Photonics, Experimental mechanics, Temperature metrology

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Proceedings Article | 3 October 2001 Paper

Modified high-accuracy 3D shape data conversion system for reverse engineering applications

Robert Sitnik, Malgorzata Kujawinska

Proceedings Volume 4399, (2001) https://doi.org/10.1117/12.445576

KEYWORDS: Clouds, 3D metrology, Data conversion, Reverse engineering, Data processing, Computing systems, Computer graphics, Optical testing, Computer aided design, Error analysis

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Proceedings Article | 31 August 2000 Paper

Quality assessment of reverse engineering process based on full-field true-3D optical measurements

Malgorzata Kujawinska, Robert Sitnik

Proceedings Volume 4076, (2000) https://doi.org/10.1117/12.397951

KEYWORDS: Calibration, Clouds, Reverse engineering, Manufacturing, Data conversion, Computer aided design, Process engineering, Reverse modeling, 3D metrology, Rapid manufacturing

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Proceedings Article | 16 March 2000 Paper

Opto-numerical methods of data acquisition for computer graphics and animation systems

Robert Sitnik, Malgorzata Kujawinska

Proceedings Volume 3958, (2000) https://doi.org/10.1117/12.380053

KEYWORDS: Calibration, Clouds, 3D metrology, Computing systems, Computer graphics, Manufacturing, Reverse engineering, Data acquisition, Optical testing, CCD cameras

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Proceedings Article | 13 August 1999 Paper

3D object optonumerical acquisition methods for CAD/CAM and computer graphics systems

Robert Sitnik, Malgorzata Kujawinska, Michal Pawlowski, Jerzy Woznicki

Proceedings Volume 3744, (1999) https://doi.org/10.1117/12.357706

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Proceedings Article | 30 June 1998 Paper

Local measurements of high-gradient in-plane displacement/strain fields by automated grating interferometry

Malgorzata Kujawinska, Leszek Salbut, Robert Sitnik

Proceedings Volume 3478, (1998) https://doi.org/10.1117/12.312956

KEYWORDS: Waveguides, Digital filtering, Diffraction gratings, Metals, Interferometers, Fringe analysis, Ceramics, Interferometry, Imaging systems, Beam shaping

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