00415nas a2200181   4500000000100000000000100001000000100002008004100003100001600044700002500060700002100085700001800106700002100124245005600145300001100201490000700212022001400219       2002                            d1 aA. Augustyn1 aPrzemysław Kowalski1 aLeszek Luchowski1 aDariusz Pojda1 aKrzysztof Skabek00aSystem for toolmark analysis in forensic laboratory  a3–160 v14  a0867-212100347nas a2200133   4500000000100000000000100001008004100002100001600043700002500059700002100084700001800105700002100123245006900144       2000                            d1 aA. Augustyn1 aPrzemysław Kowalski1 aLeszek Luchowski1 aDariusz Pojda1 aKrzysztof Skabek00aComputer-assisted analysis of striated toolmarks and impressions00855nas a2200169   4500000000100000000000100001008004100002260013300043100002500176700001800201700002100219700002400240700002500264245005200289300001400341520033000355       2014                            d  bSilesian University of Technology, Gliwice, Institute of Theoretical and Applied Informatics, Polish Academy of Science, Gliwice1 aPrzemysław Kowalski1 aDariusz Pojda1 aAleksandra Gruca1 aTadeusz Czachórski1 aStanisław Kozielski00aVisualization of heterogenic images of 3D scene  a291–2973 a<p>The article presents a problem of 3D and 2D heterogenic data visualization. The data come from different devices installed on the robot platform. The data include 3D point cloud, 2D images, 3D and 2D occupancy grids, obtained from laser scanning device, stereocameras and calculated using data from laser 3D scanner.</p>
00407nas a2200169   4500000000100000000000100001008004100002260001500043100002100058700002500079700002600104700001900130700001800149700002100167245003500188300001400223       1999                            d  cXaKraków1 aLeszek Luchowski1 aPrzemysław Kowalski1 aAgnieszka Anna Tomaka1 aMaciej Philipp1 aDariusz Pojda1 aKrzysztof Skabek00aMobile Stereovision Strategies  a531–53600350nas a2200133   4500000000100000000000100001000000100002008004100003100001800044245011900062300001400181490000700195022001400202       2010                            d1 aDariusz Pojda00aCalculating the position of the observer in 3D using 2D images for the interactive presentation of virtual objects  a177–1860 v22  a1896-533400339nas a2200133   4500000000100000000000100001000000100002008004100003100001800044245011100062300001100173490000700184022001400191       2008                            d1 aDariusz Pojda00aSystem of computer aiding diagnostic of Squint with applying analysis of the signal of the move of the eye  a3–140 v20  a1896-533400197nas a2200085   4500000000100000000000100001008004100002100001800043245005000061       2000                            d1 aDariusz Pojda00aZastosowanie systemu OBER2 w diagnostyce zeza00743nas a2200109   4500000000100000000000100001008004100002100001800043245007700061300001200138520048300150       1999                            d1 aDariusz Pojda00aSegmentacja i pasowanie obrazów 2D dla potrzeb aktywnego stereowidzenia  a81–843 aW referacie przedstawiono metodę segmentacji i pasowania par obrazów stereo. Metoda ta została opracowana w wyniku prac prowadzonych w ramach projektu badawczego dotyczącego automatycznego rozpoznawania struktury trójwymiarowej sceny. Scena zbudowana jest z brył wielościennych i obserwowznz za pomocą ruchomej głowicy stereowizyjnej. Głównym celem projektu było rozpoznawanie obserwowanych brył geometrycznych oraz określanie ich wzajemnego położenia na scenie.01784nas a2200133   4500000000100000000000100001008004100002260007300043100001800116700002500134245015100159300001200310520132800322       2014                            d  c3bInternational Centre of Biocybernetics Polish Academy of Sciences1 aDariusz Pojda1 aPrzemysław Kowalski00aAssumptions for a software tool to support the diagnosis of the stomatognathic system: data gathering, visualizing compund models and their motion  a51–563 a<p>The amount of measurement data collected in medical diagnostics makes their storage and handling an important issue. Also, the requirements for the visualization of such data, and for merging information from different sources of measurement, are growing. In the case of diagnosis of stomatognathic system we have to deal with various methods of medical imaging, such as CT, 3D scans, impressions of teeth, facial scans, and various types of reconstructions resulting from processing of measurement data. In the research project dedicated to the diagnosis of bruxism, we encounter records of measurements of Holter monitoring. We present a web application designed to collect the measurement data acquired in the project. In the first version, this tool has been prepared to store EKG files. We are planning further extension of the capabilities of the database to collect 3D scans, volumetric data and surfaces which are reconstructed from computed tomography. We also present assumptions for the user interface to the desktop application to assist the diagnosis. The application will allow to carry out morphometric measurements, the integration of multimodal imaging data, visualization of mandible movement in TMJ, occlusion detection and motion simulation of the mandible, and also the design of dental guard.</p>
00330nas a2200145   4500000000100000000000100001000000100002008004100003100001800044700002500062245005900087300001200146490000700158022001900165       1999                            d1 aDariusz Pojda1 aPrzemysław Kowalski00aProgramowe platformy dla zagadnień wizji komputerowej  a57–810 v37  aISSN 0208-728600745nas a2200157   4500000000100000000000100001000000100002008004100003100001800044700002500062245006700087300001400154490000700168520039300175022001900568       1998                            d1 aDariusz Pojda1 aPrzemysław Kowalski00aKryteria pasowania punktów charaktery-stycznych w stereowizji  a209–2230 v353 aIstotnym problemem, występującym w zagadnieniu stereowidzenia, z wykorzystaniem obrazu z dwu kamer, jest pasowanie punktów charakterystycznych. W artykule przedstawiamy zestaw pięciu testów, służących do pasowania punktów. Jest to test jasnościowy, dokonujący właściwego pasowania, oraz cztery testy geometryczne, dokonujące weryfikacji poprawności spasowania par punktów.  aISSN 0208-728600280nas a2200121   4500000000100000000000100001008004100002260000600043100001800049700001600067245006100083300001400144       2006                            d  c91 aDariusz Pojda1 aJózef Ober00aModel of the oculomotoric system for diagnosis of Squint  a193–19800236nas a2200097   4500000000100000000000100001008004100002100001800043700001600061245006100077       2004                            d1 aDariusz Pojda1 aJózef Ober00aModel of the oculomotoric system for diagnosis of Squint00263nas a2200097   4500000000100000000000100001008004100002100001800043700001600061245008800077       2003                            d1 aDariusz Pojda1 aJózef Ober00aMultilayer model of the oculomothoric system for computer based diagnosis of squint01093nas a2200157   4500000000100000000000100001000000100002008004100003100002100044700001800065245006900083300001400152490000700166520074800173022001400921       2011                            d1 aKrzysztof Skabek1 aDariusz Pojda00aOptimization of Mesh Representation for Progressive Transmission  a263–2750 v233 aAbstract: The paper presents the implementation of methods for progressive mesh encoding. The described implementation is a modification of the software published in 2008 by Zhao He, which is based on studies by Michael Garland and Hugues Hoppe. We focused on improving the performance of the software. In particular we modified the data structures to ensure their better indexing, which significantly improved the computational complexity of the algorithm. We also implemented the support for simplified meshes with textures. The authors present the comparison of the performance of these methods in relation to the original He Zhao’s algorithm. The performance of progressive mesh encoding in our implementation was significantly improved.  a1896-533401005nas a2200145   4500000000100000000000100001008004100002260005000043100002100093700001800114700002300132245006700155300001400222520062300236       2016                            d  bSpringer International Publishing Switzerland1 aKrzysztof Skabek1 aDariusz Pojda1 aRyszard Winiarczyk00aProgressive reduction of meshes with arbitrary selected points  a525–5333 a<p>The usage of progressive meshes for representation and transmission of triangular meshes of faces at certain level of details was described in the paper. We focused on progressive representation based on Garland and Hoppe approach. The comparison of simple methods using quadric mesh simplification to the view-dependent implementation of progressive methods was performed. The mesh simplification is further improved by introducing the characteristic points fixing the distinguishable points on human face. The test and discussion of the implemented method were given using face scans from 3dMD face scanner.</p>
00580nas a2200205   4500000000100000000000100001008004100002260004400043100002600087700002200113700001800135700001600153700001700169700001500186700002300201245006300224856005100287300001400338020002200352       2016                            d  bSpringer International PublishingaCham1 aAgnieszka Anna Tomaka1 aMichał Tarnawski1 aDariusz Pojda1 aEwa Piętka1 aPawel Badura1 aJacek Kawa1 aWojciech Wieclawek00aMultimodal Image Registration for Mandible Motion Tracking  uhttp://dx.doi.org/10.1007/978-3-319-39796-2_15  a179–191  a978-3-319-39796-200444nas a2200157   4500000000100000000000100001008004100002260005300043100001800096700002600114700002100140700002100161700002200182245006800204490001400272       2019                            d  c05/2019bSpringer International PublishingaCham1 aDariusz Pojda1 aAgnieszka Anna Tomaka1 aLeszek Luchowski1 aKrzysztof Skabek1 aMichał Tarnawski00aApplying computational geometry to designing an occlusal splint0 vvol 1098600830nas a2200157   4500000000100000000000100001008004100002260004400043100002600087700001800113700002100131700002200152245004000174520043600214020002200650       2018                            d  bSpringer International PublishingaCham1 aAgnieszka Anna Tomaka1 aDariusz Pojda1 aLeszek Luchowski1 aMichał Tarnawski00aMethods of Tooth Equator Estimation3 a<p>Full automation of the designing process of an occlusal splint requires an algorithm to determine the boundary of the splint. For this purpose, the idea of tooth equator is frequently used. The task is to find the approximate level where the teeth are widest, and then cut off the shape of the splint there. The article presents methods for automatic estimation of the tooth equator, used to determine the splint boundary.</p>
  a978-3-030-00840-601010nas a2200169   4500000000100000000000100001008004100002260004400043100002600087700002100113700001800134700002200152245006500174490001300239520056600252020002200818       2019                            d  bSpringer International PublishingaCham1 aAgnieszka Anna Tomaka1 aLeszek Luchowski1 aDariusz Pojda1 aMichał Tarnawski00aDynamic Occlusion Surface Estimation from 4D Multimodal Data0 vvol 10113 a<p>Methods are described of determining the dynamic occlusion surface based on dynamic sequences of mandibular motion, acquired with a dynamic scanner, and measurements acquired with the Zebris axiograph. The Zebris data is brought into register with multimodal imagery, using three corresponding transformations. This registration allows dense motion sequences to be simulated, which in turn allows occlusal conditions to be known at various stages of movement and the dynamic occlusal surface to be identified for the purposes of occlusal splint design.</p>
  a978-3-030-23761-500459nas a2200157   4500000000100000000000100001008004100002260001200043100002600055700002100081700001800102700002100120700002200141245006800163856007000231       2019                            d  c10/20191 aAgnieszka Anna Tomaka1 aLeszek Luchowski1 aDariusz Pojda1 aKrzysztof Skabek1 aMichał Tarnawski00aApplying computational geometry to designing an occlusal splint  uhttps://www.tandfonline.com/doi/abs/10.1080/21681163.2019.167009602024nas a2200181   4500000000100000000000100001008004100002260005400043100002600097700002100123700001800144700002200162700002100184245007000205856003600275520150400311022002701815       2019                            d  bUTP University of Science & TechnologyaBydgoszcz1 aAgnieszka Anna Tomaka1 aLeszek Luchowski1 aDariusz Pojda1 aMichał Tarnawski1 aKrzysztof Domino00aThe dynamics of the stomatognathic system from 4D multimodal data  uhttp://arxiv.org/abs/1911.088543 a<pre>
  The purpose of this chapter is to discuss methods of acquisition,
visualization and analysis of the dynamics of a complex biomedical system,
illustrated by the human stomatognathic system. The stomatognathic system
consists of the teeth and the skull bones with the maxilla and the mandible.
Its dynamics can be described by the change of mutual position of the
lower/mandibular part versus the upper/maxillary one due to the physiological
motion of opening, chewing and swallowing. In order to analyse the dynamics of
the stomatognathic system its morphology and motion has to be digitized, which
is done using static and dynamic multimodal imagery like CBCT and 3D scans data
and temporal measurements of motion. The integration of multimodal data
incorporates different direct and indirect methods of registration - aligning
of all the data in the same coordinate system. The integrated sets of data form
4D multimodal data which can be further visualized, modeled, and subjected to
multivariate time series analysis. Example results are shown. Although there is
no direct method of imaging the TMJ motion, the integration of multimodal data
forms an adequate tool. As medical imaging becomes ever more diverse and ever
more accessible, organizing the imagery and measurements into unified,
comprehensive records can deliver to the doctor the most information in the
most accessible form, creating a new quality in data simulation, analysis and
interpretation.</pre>
  aISBN 978-83-65603-96-800436nas a2200169   4500000000100000000000100001008004100002260001300043100002100056700002600077700001800103700002200121700002100143700002500164245005500189022002200244       2020                            d  bAOW EXIT1 aLeszek Luchowski1 aAgnieszka Anna Tomaka1 aDariusz Pojda1 aMichał Tarnawski1 aKrzysztof Skabek1 aPrzemysław Kowalski00aSkanery3D - trójwymiarowe obrazowanie powierzchni  a978-83-7837-097-000483nas a2200157   4500000000100000000000100001008004100002260001300043100002600056700002200082700002100104700002100125700001800146245013900164022002200303       2020                            d  bAOW EXIT1 aAgnieszka Anna Tomaka1 aMichał Tarnawski1 aLeszek Luchowski1 aBartosz Cerkaski1 aDariusz Pojda00aIntegracja obrazowania wielomodalnego w zastosowaniu do wspomagania diagnostyki stomatologicznej, planowania i oceny wyników leczenia  a978-83-7837-097-000478nas a2200181   4500000000100000000000100001008004100002260001200043100002100055700002600076700001800102700002100120700002500141245006400166856004500230490000700275022001400282       2021                            d  c02/20211 aLeszek Luchowski1 aAgnieszka Anna Tomaka1 aDariusz Pojda1 aKrzysztof Skabek1 aPrzemysław Kowalski00aMultimodal imagery in forensic incident scene documentation  uhttps://www.mdpi.com/1424-8220/21/4/14070 v21  a1424-822001786nas a2200181   4500000000100000000000100001008004100002260001200043100001800055700002600073700002100099700002200120245011400142856004600256490000700302520128100309022001401590       2021                            d  c12/20211 aDariusz Pojda1 aAgnieszka Anna Tomaka1 aLeszek Luchowski1 aMichał Tarnawski00aIntegration and application of multimodal measurement techniques: relevance of photogrammetry to orthodontics  uhttps://www.mdpi.com/1424-8220/21/23/80260 v213 a<p>Multimodal imaging, including 3D modalities, is increasingly being applied in orthodontics, both as a diagnostic tool and especially for the design of intraoral appliances, where geometric accuracy is very important. Laser scanners and other precision 3D imaging devices are expensive and cumbersome, which limits their use in medical practice. Photogrammetry, using ordinary 2D photographs or video recordings to create 3D imagery, offers a cheaper and more convenient alternative, replacing&nbsp; the specialised equipment with handy consumer cameras. The present paper addresses the question to what extent, and under what conditions, this technique can be an adequate replacement for the 3D scanner. The accuracy of simple surface reconstruction and of model embedding achieved with photogrammetry was verified against that obtained with a triangulating laser scanner.</p>

<p>To roughly evaluate the impact of image imperfections on photogrammetric reconstruction, the photographs for photogrammetry were taken under various lighting conditions and used either raw or with a blur simulating defocus. Video footage was also tested as another 2D imaging modality feeding data into photogrammetry. Results show significant potential of photogrammetric techniques.</p>
  a1424-822000403nas a2200157   4500000000100000000000100001008004100002260001200043100001800055700002000073700002600093700002100119245004800140856005000188490000700238       2025                            d  c02/20251 aDariusz Pojda1 aMateusz Żarski1 aAgnieszka Anna Tomaka1 aLeszek Luchowski00adpVision: environment for multimodal images  uhttp://dx.doi.org/10.1016/j.softx.2025.1020930 v3000463nas a2200169   4500000000100000000000100001008004100002260001200043100002600055700001800081700002200099700002100121245007600142856005300218490000800271022001400279       2025                            d  c05/20251 aAgnieszka Anna Tomaka1 aDariusz Pojda1 aMichał Tarnawski1 aLeszek Luchowski00aTransformation trees – documentation of multimodal image registration  uhttps://doi.org/10.1016/j.compbiomed.2025.1103110 v193  a0010-482500358nas a2200133   4500000000100000000000100001008004100002260001200043100002100055700001800076245007700094856004600171490000700217       2025                            d  c06/20251 aLeszek Luchowski1 aDariusz Pojda00aVisualization of a multidimensional point cloud as a 3D swarm of avatars  uhttps://www.mdpi.com/2076-3417/15/13/72090 v1501949nas a2200181   4500000000100000000000100001008004100002260001200043100002600055700002100081700002200102700001800124245009600142856004700238490000900285520145900294022001401753       2025                            d  c10/20251 aAgnieszka Anna Tomaka1 aLeszek Luchowski1 aMichał Tarnawski1 aDariusz Pojda00aComputer-Aided Design of Personalized Occlusal Positioning Splints Using Multimodal 3D Data  uhttps://doi.org/10.1016/j.cviu.2025.1045270 v262C3 a<p>Digital technology plays a crucial role in designing customized medical devices, such as occlusal splints, commonly used in the management of disorders of the stomatognathic system. This methodological proof-of-concept study presents a computer-aided approach for designing and evaluating occlusal positioning splints. The primary aim is to demonstrate the feasibility and geometric accuracy of the proposed method at the preclinical stage. In this approach, a three-dimensional splint is generated using a transformation matrix to represent the therapeutic mandibular position. An experienced operator defines this position using a virtual patient model reconstructed from intraoral scans, CBCT, 3D facial scans, and a digitized plaster model. We introduce a novel method for generating splints that reproduces occlusal conditions in the therapeutic position and resolves surface conflicts through virtual embossing. The process for obtaining transformation matrices using dental tools and intraoral devices commonly employed in dental and laboratory workflows is described, and the geometric accuracy of both designed and printed splints is evaluated using profile and surface deviation analysis. The method supports reproducible, patient-specific splint fabrication and provides a transparent foundation for future validation studies, supporting multimodal image registration and quantification of occlusal discrepancies in research settings.</p>
  a1077-314201663nas a2200181   4500000000100000000000100001008004100002260007700043100001900120700001700139700001800156700002000174700001800194700002000212245007100232856005600303520112200359       2025                            d  c09.2025bWrocław University of Science and TechnologyaWrocław, Poland1 aWojciech Macek1 aMariusz Deja1 aDariusz Pojda1 aMateusz Korpyś1 aCho-Pei Jiang1 aGrzegorz Lesiuk00aQuantitative Techniques for Assessing Fatigue Damage After Failure  uhttps://iras2025.pwr.edu.pl/publication/macek-2025/3 a<p>A significant quantity of the fatigue life studies and a considerable number of fracture investigations have been carried out to measure changes associated with the damage process. However, there are cur-rently no set rules for the fractographical assessment of fatigue damage, and efforts are being made to find suitable techniques or alter current ones. Consequently, this study looks at two efficient post-failure techniques for identifying and quantifying damage. Fracture surface topography analysis, or FRASTA, has been used to solve a variety of failure problems. This quantified fractographic approach was first used in the early 1980s and has since been improved upon in tandem with developments in computing and measurement methods. To understand the behavior of a material under stress, especially in fatigue scenarios, the second methodology is known as the "entire fracture surface method" in mate-rial science. This method involves analyzing the entire surface of a fracture, or the broken surface pa-rameters. This approach aids in forecasting fatigue life and comprehending fatigue phenomena.</p>
00906nas a2200133   4500000000100000000000100001008004100002100001900043700002000062700001800082245007000100856004800170520055400218       2026                            d1 aWojciech Macek1 aMateusz Korpyś1 aDariusz Pojda00aFRASTA-toolbox: An Open Source Tool for Fracture-surface Analysis  uhttps://doi.org/10.1016/j.softx.2026.1027883 a<p>FRASTA-toolbox is an open-source application for importing, preprocessing, and analyzing three-dimensional fracture-surface scan data. It provides an implementation of the FRASTA workflow, including grid interpolation, masking, alignment, cross-sectional profile analysis, and interactive two- and three-dimensional visualization based on PyQt5 and pyqtgraph. The software supports reproducible fracture-surface analysis and is applicable to research workflows in materials science, tribology, biomedical engineering, and digital forensics.</p>
00432nas a2200145   4500000000100000008004100001100001900042700001800061700002400079700001900103700001700122700001800139245007100157856005800228       2026                            d1 aWojciech Macek1 aDariusz Pojda1 aPrzemysław Podulka1 aAntonio Mourao1 aJose Correia1 aShun-Peng Zhu00aQualitative and quantitative fractography of structural steel S235  uhttps://onlinelibrary.wiley.com/doi/10.1111/ffe.7048802325nas a2200133   4500000000100000008004100001100001800042700002100060700002200081700002600103245010300129856003600232520192300268       2026                            d1 aDariusz Pojda1 aKrzysztof Domino1 aMichał Tarnawski1 aAgnieszka Anna Tomaka00aTransformation-driven generation of comparable projection images from multimodal anatomical scenes  uhttp://arxiv.org/abs/2606.165733 aThis work addresses the computational problem of generating reproducible projection-space observations from heterogeneous anatomical scenes whose components may undergo independent spatial transformations. We propose a transformation-driven framework for synthetic projection imaging from multimodal anatomical data and demonstrate it on mandibular-motion scenarios.
In contrast to conventional Digitally Reconstructed Radiograph (DRR) approaches primarily designed for registration, projection realism, or rendering efficiency, the proposed formulation treats projection imaging as an observation process operating on an explicitly represented anatomical scene.
Independently transformable volumetric and surface-based anatomical objects are embedded within a shared scene representation and propagated directly into projection space through explicit transformations. Projection geometry, acquisition modelling, material interpretation, and image presentation remain explicitly separated, enabling controlled exploration of methodological assumptions while preserving reproducibility and direct comparability between generated projections.
Particular emphasis is placed on transformation-driven anatomical scenarios relevant to craniofacial analysis, including mandibular motion and therapeutic repositioning. Using a shared anatomical reference scene composed of CT/CBCT volumes, segmented structures, surface models, and auxiliary anatomical or therapeutic objects, the framework enables generation of directly comparable VirtualRTG projections from multiple anatomical configurations while preserving identical imaging assumptions.
Rather than aiming at fully physically faithful radiographic simulation, the proposed approach provides a controllable and reproducible methodological environment for studying anatomy--projection relationships, motion observability, and transformation-aware imaging workflows.