Image-Based Mesh Generation for Constructing a Virtual Representation of Engineered Wood Product Samples

Image-Based Mesh Generation for Constructing a Virtual Representation of Engineered Wood Product Samples | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Image-Based Mesh Generation for Constructing a Virtual Representation of Engineered Wood Product Samples Patrick Grant, Steven Psaltis, Maryam Shirmohammadi, Ian Turner This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3323846/v2 This work is licensed under a CC BY 4.0 License Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Abstract The complex structure of timber has traditionally been difficult to model as it is a highly heterogeneous material. The density and material properties for structural species such as Pinus radiata (radiata pine) can vary greatly across the growth rings. Numerical simulation methods are becoming more prevalent as a method of predicting moisture migration, stress and strain distributions, and fungal/rot intrusion in engineered wood products (EWPs). All these applications require a computational mesh that captures the growth ring structure to facilitate an accurate assessment of the performance of EWPs. In this work, a low-cost image-based algorithm is developed for generating a virtual representation of a small cross laminated timber panel sample. Specifically, the proposed method results in a virtual description of an EWP sample comprised of a triangular prismatic mesh where the nodes are aligned on the growth rings of each EWP component, with specific wood material properties allocated to each mesh element. Each small sample is treated individually and we assume there is no longitudinal variation in the density, pith location, and pith angle within the mesh structure. The initial step involves analysing an image of the end grain pattern of a single clear wood sample to identify the growth rings using a spectral clustering algorithm. Next, the centre of the tree (pith) is located through an iterative constrained least-squares algorithm to determine the pith angle. Image analysis of an anatomical image combined with the pith location allows for a constant density value to be assigned to each mesh element. The capability of this framework is then demonstrated by simulating the moisture migration and heat transfer throughout a CLT sample under atmospheric and saturating boundary conditions. Image Analysis Mesh Generation Engineered Wood Products Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3323846","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":231627900,"identity":"0c9f8439-efbf-463b-a54e-3e6b907d8bd8","order_by":0,"name":"Patrick Grant","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7ElEQVRIie3OMQrCMBSA4RcCuuQAKVW8giBoBdGrGIS6iEtBBAfj1CW4e4u6ODk8CejSA7iKoKuL4qYtFh2E1NEhP4S8QD4SAJvtHyvOZDa8diJzCdOvO4whAP5EeD8jvPsjaYCQ5LpuDzvOceVeoFWOkJ64iTTlRtLSqRcw1x9xBL8WYaFuJNXNTFKOVCh3UE+IFhFCDtEkJVOhnDglj4QUb2ayJZJcUAvFWUowIcz8SlMRqQF3QsV+4MXVXm2hWeCZSKNyPhzuOBFhqJf78bhdnu/C5d74sWRp9p7TIzXdzwi5f2abzWazffcEvEhOmVywmOwAAAAASUVORK5CYII=","orcid":"","institution":"Queensland University of Technology","correspondingAuthor":true,"prefix":"","firstName":"Patrick","middleName":"","lastName":"Grant","suffix":""},{"id":231627901,"identity":"5681a82f-a686-4010-ae30-d30a4acf046b","order_by":1,"name":"Steven Psaltis","email":"","orcid":"","institution":"Queensland University of Technology","correspondingAuthor":false,"prefix":"","firstName":"Steven","middleName":"","lastName":"Psaltis","suffix":""},{"id":231627902,"identity":"3c358300-9599-409b-904b-aedfcf4e353b","order_by":2,"name":"Maryam Shirmohammadi","email":"","orcid":"","institution":"Department of Agriculture and Fisheries","correspondingAuthor":false,"prefix":"","firstName":"Maryam","middleName":"","lastName":"Shirmohammadi","suffix":""},{"id":231627903,"identity":"3bb53524-992e-445f-9987-53ebc840d42e","order_by":3,"name":"Ian Turner","email":"","orcid":"","institution":"Queensland University of Technology","correspondingAuthor":false,"prefix":"","firstName":"Ian","middleName":"","lastName":"Turner","suffix":""}],"badges":[],"createdAt":"2023-09-04 09:44:25","currentVersionCode":2,"declarations":{"humanSubjects":false,"vertebrateSubjects":false,"conflictsOfInterestStatement":false,"humanSubjectEthicalGuidelines":false,"humanSubjectConsent":false,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-3323846/v2","doiUrl":"https://doi.org/10.21203/rs.3.rs-3323846/v2","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":57026830,"identity":"59afa72f-bbde-4846-b836-a2f9223e4a0f","added_by":"auto","created_at":"2024-05-23 15:18:17","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":18559468,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3323846/v2_covered_40593aa1-524e-4e2b-a867-5cdab2efb09b.pdf"}],"financialInterests":"The authors declare no competing interests.","formattedTitle":"\u003cp\u003eImage-Based Mesh Generation for Constructing a Virtual Representation of Engineered Wood Product Samples\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Image Analysis, Mesh Generation, Engineered Wood Products","lastPublishedDoi":"10.21203/rs.3.rs-3323846/v2","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3323846/v2","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe complex structure of timber has traditionally been difficult to model as it is a highly heterogeneous material. 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