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Visual Hull-Based Geometric Data Compression of a 3-D Object

Published: 01 July 2015 Publication History

Abstract

As image-based 3-D modeling is used in a variety of applications, accordingly, the compression of 3-D object geometry represented by multiple images becomes an important task. This paper presents a model-based approach to predict the geometric structure of an object using its visual hull. A visual hull is a geometric entity generated by shape-from-silhouette (SFS), and consequently it largely follows the overall shape of the object. The construction of a visual hull is computationally inexpensive and a visual hull can be encoded with relatively small amount of bits because it can be represented with 2-D silhouette images. Therefore, when it comes to the predictive compression of object's geometric data, the visual hull should be an effective predictor. In the proposed method, the geometric structure of an object is represented by a layered depth image (LDI), and a visual hull from the LDI data is computed via silhouette generation and SFS. The geometry of an object is predicted with the computed visual hull, and the visual hull data with its prediction errors are encoded. Simulation results show that the proposed predictive coding based on visual hull outperforms the previous image-based methods and the partial surface-based method.

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Cited By

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  • (2022)Non-convex hull based anomaly detection in CPPSEngineering Applications of Artificial Intelligence10.1016/j.engappai.2019.10330187:COnline publication date: 21-Apr-2022
  • (2017)Stereoscopic Image Stitching Based on a Hybrid Warping ModelIEEE Transactions on Circuits and Systems for Video Technology10.1109/TCSVT.2016.256483827:9(1934-1946)Online publication date: 1-Sep-2017

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    Published In

    cover image IEEE Transactions on Circuits and Systems for Video Technology
    IEEE Transactions on Circuits and Systems for Video Technology  Volume 25, Issue 7
    July 2015
    177 pages

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    IEEE Press

    Publication History

    Published: 01 July 2015

    Author Tags

    1. visual hull
    2. 3-D object coding
    3. layered depth image (LDI)
    4. predictive coding
    5. shape-from-silhouette (SFS)

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    View all
    • (2022)Non-convex hull based anomaly detection in CPPSEngineering Applications of Artificial Intelligence10.1016/j.engappai.2019.10330187:COnline publication date: 21-Apr-2022
    • (2017)Stereoscopic Image Stitching Based on a Hybrid Warping ModelIEEE Transactions on Circuits and Systems for Video Technology10.1109/TCSVT.2016.256483827:9(1934-1946)Online publication date: 1-Sep-2017

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