Bottom-up/Top-down Geometric Object Reconstruction with CNN Classification for Mobile Education

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dc.contributor.authorGuo, Tingen_US
dc.contributor.authorCui, Rundongen_US
dc.contributor.authorQin, Xiaoranen_US
dc.contributor.authorWang, Yongtaoen_US
dc.contributor.authorTang, Zhien_US
dc.contributor.editorFu, Hongbo and Ghosh, Abhijeet and Kopf, Johannesen_US
dc.date.accessioned2018-10-07T14:31:52Z
dc.date.available2018-10-07T14:31:52Z
dc.date.issued2018
dc.description.abstractGeometric objects in educational materials are often illustrated as 2D line drawings, which results in the loss of depth information. To alleviate the problem of fully understanding the 3D structure of geometric objects, we propose a novel method to reconstruct the 3D shape of a geometric object illustrated in a line drawing image. In contrast to most existing methods, ours directly take a single line drawing image as input and generate a valid sketch for reconstruction. Given a single input line drawing image, we first classify the geometric object in the image with convolution neural network (CNN). More specifically, we pre-train the model with simulated images to alleviate the problems of data collection and unbalanced distribution among different classes. Then, we generate the sketch of the geometric object with our proposed bottom-up and top-down scheme. Finally, we finish reconstruction by minimizing an objective function of reconstruction error. Extensive experimental results demonstrate that our method performs significantly better in both accuracy and efficiency compared with the existing methods.en_US
dc.description.sectionheadersSketch-based Interfaces
dc.description.seriesinformationPacific Graphics Short Papers
dc.identifier.doi10.2312/pg.20181269
dc.identifier.isbn978-3-03868-073-4
dc.identifier.pages13-16
dc.identifier.urihttps://doi.org/10.2312/pg.20181269
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/pg20181269
dc.publisherThe Eurographics Associationen_US
dc.subject3D reconstruction
dc.subjectgeometric object classification
dc.subjectsketch generation
dc.titleBottom-up/Top-down Geometric Object Reconstruction with CNN Classification for Mobile Educationen_US
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