<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-17T07:00:03Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:20.500.14342/5408" metadataPrefix="mets">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:20.500.14342/5408</identifier><datestamp>2025-07-13T07:37:13Z</datestamp><setSpec>com_2072_482405</setSpec><setSpec>com_2072_183628</setSpec><setSpec>col_2072_482415</setSpec></header><metadata><mets xmlns="http://www.loc.gov/METS/" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" ID="&#xa;&#x9;&#x9;&#x9;&#x9;DSpace_ITEM_20.500.14342-5408" TYPE="DSpace ITEM" PROFILE="DSpace METS SIP Profile 1.0" xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd" OBJID="&#xa;&#x9;&#x9;&#x9;&#x9;hdl:20.500.14342/5408">
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                  <mods:namePart>Ruiz, Conrado Jr.</mods:namePart>
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                  <mods:namePart>Le, Sang N.</mods:namePart>
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                  <mods:namePart>Yu, Jinze</mods:namePart>
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                  <mods:namePart>Low, Kok-Lim</mods:namePart>
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                  <mods:dateAccessioned encoding="iso8601">2025-07-13T07:37:13Z</mods:dateAccessioned>
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               <mods:identifier type="issn">1467-8659</mods:identifier>
               <mods:identifier type="uri">http://hdl.handle.net/20.500.14342/5408</mods:identifier>
               <mods:identifier type="doi">https://doi.org/10.1111/cgf.12320</mods:identifier>
               <mods:abstract>Paper pop-ups are interesting three-dimensional books that fascinate people of all ages. The design and construction of these pop-up books however are done manually and require a lot of time and effort. This has led to computer-assisted or automated tools for designing paper pop-ups. This paper proposes an approach for automatically converting a 3D model into a multi-style paper pop-up. Previous automated approaches have only focused on single-style pop-ups, where each is made of a single type of pop-up mechanisms. In our work, we combine multiple styles in a pop-up, which is more representative of actual artist’s creations. Our method abstracts a 3D model using suitable primitive shapes that both facilitate the formation of the considered pop-up mechanisms and closely approximate the input model. Each shape is then abstracted using a set of 2D patches that combine to form a valid pop-up. We define geometric conditions that ensure the validity of the combined pop-up structures. In addition, our method also employs an image-based approach for producing the patches to preserve the textures,&#xd;
finer details and important contours of the input model. Finally, our system produces a printable design layout and decides an assembly order for the construction instructions. The feasibility of our results is verified by constructing the actual paper pop-ups from the designs generated by our system</mods:abstract>
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               <mods:accessCondition type="useAndReproduction">© 2014 The Eurographics Association and John Wiley &amp; Sons Ltd. Tots els drets reservats</mods:accessCondition>
               <mods:subject>
                  <mods:topic>Computer Graphics</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Computational Geometry</mods:topic>
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               <mods:subject>
                  <mods:topic>Object Modeling</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Geometric algorithms</mods:topic>
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                  <mods:title>Multi-style paper pop-up designs from 3D models</mods:title>
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