Loading method for a 3D geological entity model based on free-form deformation technique

Loading method for a 3D geological entity model based on free-form deformation technique | 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 Loading method for a 3D geological entity model based on free-form deformation technique Wenxue Wang, Zhiting Zhang, Genshen Chen, Xuechao Wu, Yangshuai Song, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3337666/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract For the construction of a Glass Earth a 3D geological entity model needs to be loaded into a Digital Earth visualization engine to visualize the expressions of geological entities. Space expressed by a 3D geological entity model is formed by a research area that extends vertically to a certain depth range in a projected coordinate system. When a 3D geological entity model is loaded into Digital Earth, the model-bounding box is combined with the model’s central point to perform the transformation, which causes the boundaries of adjacent models to deviate from each other to various degrees. Moreover, gaps and overlaps form at the top and bottom of the models, respectively. In this study, based on analyses of elevation naturalization correction and Gaussian projection deformation characteristics, bounding box–based free-form deformation was used to realize the model transformation in the process of loading a complex 3D geological entity model. By establishing a parametric model and mapping its relationship to the object to be deformed, free-form deformation was used based on deformation error correction. In this way, deviations between 3D geological entity models loaded into Digital Earth can be reduced. Using practical project cases, 3D geological entity models located at the margin of a zone six degrees wide in longitude and their central regions were comparatively analyzed. The results show that the free-form deformation used in this study can effectively reduce deviation problems in models. 3D geological entity model Elevation naturalization correction Gaussian projection deformation Free-form deformation technique Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version 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-3337666","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":232559721,"identity":"8a660478-1599-4608-85ee-fcfd3b49c30a","order_by":0,"name":"Wenxue Wang","email":"","orcid":"","institution":"China University of Geosciences","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Wenxue","middleName":"","lastName":"Wang","suffix":""},{"id":232559722,"identity":"cd43e4fc-ee25-4521-aefd-35d5a7ff48c7","order_by":1,"name":"Zhiting 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Free-form deformation technique","lastPublishedDoi":"10.21203/rs.3.rs-3337666/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3337666/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eFor the construction of a Glass Earth a 3D geological entity model needs to be loaded into a Digital Earth visualization engine to visualize the expressions of geological entities. Space expressed by a 3D geological entity model is formed by a research area that extends vertically to a certain depth range in a projected coordinate system. When a 3D geological entity model is loaded into Digital Earth, the model-bounding box is combined with the model\u0026rsquo;s central point to perform the transformation, which causes the boundaries of adjacent models to deviate from each other to various degrees. Moreover, gaps and overlaps form at the top and bottom of the models, respectively. In this study, based on analyses of elevation naturalization correction and Gaussian projection deformation characteristics, bounding box\u0026ndash;based free-form deformation was used to realize the model transformation in the process of loading a complex 3D geological entity model. By establishing a parametric model and mapping its relationship to the object to be deformed, free-form deformation was used based on deformation error correction. In this way, deviations between 3D geological entity models loaded into Digital Earth can be reduced. Using practical project cases, 3D geological entity models located at the margin of a zone six degrees wide in longitude and their central regions were comparatively analyzed. 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