Art-directing Disney's
            <i>Tangled</i>
            procedural trees

Shek, Arthur; Lacewell, Dylan; Selle, Andrew; Teece, Daniel; Thompson, Tom

doi:10.1145/1837026.1837095

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…Despite its long history, the study of tree animation remains active. Other than animating real‐world scenarios, such as the trees' growth process and their interactions with the environment, special requirements in animating stylized trees arise in the film and animation industry in order to nurture the mysterious atmosphere with compelling visual effects . Consequently, topology‐aware approaches have been proposed to generate smooth transformations between trees, achieving visually compelling special effects .…”

Section: Introductionmentioning

confidence: 99%

Sketch‐based shape‐preserving tree animations

Wang

Deng

et al. 2018

Computer Animation & Virtual

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We present a novel and intuitive sketch-based tree animation technique, targeting on generating a new type of special effect of smoothly transforming leafy trees into morphologically different new shapes. Both topological consistencies of branches and meaningful in-between crown shapes are preserved during the transformation. Specifically, it takes a leafy tree and a user's sketch describing the silhouette of the desired crown shape under a certain viewpoint as the input.Based on a self-adaptive multiscale cage tree representation, branches are locally transformed through a series of topology-aware deformations, and the resulting tree conforms to the user-designed shape, demonstrating better aesthetics compared to global single-cage-based methods. By interpolating the transformations, we are able to create visually pleasing shape-preserving animations of trees transforming between two crown shapes. Our proposed framework also provides an efficient way to interactively edit leafy trees toward desired shapes, demonstrating its potential to leverage existing tree modeling frameworks by providing flexible and intuitive tree editing operations.

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Section: Introductionmentioning

confidence: 99%

Sketch‐based shape‐preserving tree animations

Wang

Deng

et al. 2018

Computer Animation & Virtual

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“…Numerous methods and pieces of software have been proposed to synthesize realistic trees. However, with the rapid development of applications, special requirements arise on the shapes of synthesized trees [SLS*10].…”

Section: Introductionmentioning

confidence: 99%

Variational Tree Synthesis

Wang

Yang

Bao

2014

Computer Graphics Forum

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Modelling trees according to desired shapes is important for many applications. Despite numerous methods having been proposed in tree modelling, it is still a non-trivial task and challenging. In this paper, we present a new variational computing approach for generating realistic trees in specific shapes. Instead of directly modelling trees from symbolic rules, we formulate the tree modelling as an optimization process, in which a variational cost function is iteratively minimized. This cost function measures the difference between the guidance shape and the target tree crown. In addition, to faithfully capture the branch structure of trees, several botanical factors, including the minimum total branches volume and spatial branches patterns, are considered in the optimization to guide the tree modelling process. We demonstrate that our approach is applicable to generate trees with different shapes, from interactive design and complex polygonal meshes.

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