4D Reconstruction of Blooming Flowers

Flower blooming is a beautiful phenomenon in nature as flowers open in an intricate and complex manner whereas petals bend, stretch and twist under various deformations. Flower petals are typically thin structures arranged in tight configurations with heavy self‐occlusions. Thus, capturing and recon...

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Bibliographic Details
Published in:Computer graphics forum Vol. 36; no. 6; pp. 405 - 417
Main Authors: Zheng, Qian, Fan, Xiaochen, Gong, Minglun, Sharf, Andrei, Deussen, Oliver, Huang, Hui
Format: Journal Article
Language:English
Published: Oxford Blackwell Publishing Ltd 01.09.2017
Subjects:
animation
behavioural animation
Computer simulation
Deformation
Flowers
geometric modelling
I.3.5 [Computer Graphics]: Computational Geometry and Object Modelling Modelling; I.3.7 [Computer Graphics]: Three‐Dimensional Graphics and Realism Animation
modelling
Petals
Physical simulation
point‐based animation
Scanners
Three dimensional models
Tracking
ISSN:0167-7055, 1467-8659
Online Access:Get full text
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Summary:Flower blooming is a beautiful phenomenon in nature as flowers open in an intricate and complex manner whereas petals bend, stretch and twist under various deformations. Flower petals are typically thin structures arranged in tight configurations with heavy self‐occlusions. Thus, capturing and reconstructing spatially and temporally coherent sequences of blooming flowers is highly challenging. Early in the process only exterior petals are visible and thus interior parts will be completely missing in the captured data. Utilizing commercially available 3D scanners, we capture the visible parts of blooming flowers into a sequence of 3D point clouds. We reconstruct the flower geometry and deformation over time using a template‐based dynamic tracking algorithm. To track and model interior petals hidden in early stages of the blooming process, we employ an adaptively constrained optimization. Flower characteristics are exploited to track petals both forward and backward in time. Our methods allow us to faithfully reconstruct the flower blooming process of different species. In addition, we provide comparisons with state‐of‐the‐art physical simulation‐based approaches and evaluate our approach by using photos of captured real flowers. Flower blooming is a beautiful phenomenon in nature as flowers open in an intricate and complex manner whereas petals bend, stretch and twist under various deformations. Flower petals are typically thin structures arranged in tight configurations with heavy self‐occlusions. Thus, capturing and reconstructing spatially and temporally coherent sequences of blooming flowers is highly challenging. Early in the process only exterior petals are visible and thus interior parts will be completely missing in the captured data. Utilizing commercially available 3D scanners, we capture the visible parts of blooming flowers into a sequence of 3D point clouds. We reconstruct the flower geometry and deformation over time using a template‐based dynamic tracking algorithm. To track and model interior petals hidden in early stages of the blooming process, we employ an adaptively constrained optimization. Flower characteristics are exploited to track petals both forward and backward in time. Our methods allow us to faithfully reconstruct the flower blooming process of different species.
Bibliography:Corresponding author: Hui Huang
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ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.12989