Quadrangulation of non-rigid objects using deformation metrics

Zhou, Jiaran; Campen, Marcel; Zorin, Denis; Tu, Changhe; Silva, Cláudio T.

doi:10.1016/j.cagd.2018.03.003

Cited by 9 publications

(4 citation statements)

References 41 publications

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“…Often, it is formulated as a numerical optimization problem—commonly a non‐convex one. The challenges of non‐convexity are dealt with, for instance, by omitting the non‐convex constraints [KNP07, BZK09, KMZ11, MZ13, ESCK16, ZCZ∗18] or by conservative convexification [Lip12, BCE∗13, CBK15, BCW17, HCW19]. In the former case, results can be invalid (violating local injectivity requirements) [BZK09, EBCK13], in the latter case valid solutions are excluded—in the worst case leading to an infeasible problem.…”

Section: Related Workmentioning

confidence: 99%

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Combinatorial Construction of Seamless Parameter Domains

Zhou

Zorin

et al. 2020

Computer Graphics Forum

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The problem of seamless parametrization of surfaces is of interest in the context of structured quadrilateral mesh generation and spline‐based surface approximation. It has been tackled by a variety of approaches, commonly relying on continuous numerical optimization to ultimately obtain suitable parameter domains. We present a general combinatorial seamless parameter domain construction, free from the potential numerical issues inherent to continuous optimization techniques in practice. The domains are constructed as abstract polygonal complexes which can be embedded in a discrete planar grid space, as unions of unit squares. We ensure that the domain structure matches any prescribed parametrization singularities (cones) and satisfies seamlessness conditions. Surfaces of arbitrary genus are supported. Once a domain suitable for a given surface is constructed, a seamless and locally injective parametrization over this domain can be obtained using existing planar disk mapping techniques, making recourse to Tutte's classical embedding theorem.

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Section: Related Workmentioning

confidence: 99%

“…The problem of seamless surface parametrization with prescribed singularities has been considered in a long series of works, including [TACSD06, KNP07, BZK09, KMZ11, MZ13, MPZ14, CBK15, FLG15, CLW16, ESCK16, BCW17, ZCZ∗18, FBT∗18, HCW19]. Often, it is formulated as a numerical optimization problem—commonly a non‐convex one.…”

Section: Related Workmentioning

confidence: 99%

Combinatorial Construction of Seamless Parameter Domains

Zhou

Zorin

et al. 2020

Computer Graphics Forum

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show abstract

“…Most of these try to cope with specific needs in the production. For instance, [Marcias et al 2013;Zhou et al 2018] considers the deformation affecting a mesh during an animated sequence to generate a quad layout that remains good for all animation frames. While these automatic approaches are successful on several quantitative metrics (like singularity placement and coarseness), in production pipelines there is the need for a more art-controlled quad generation process.…”

Section: Related Workmentioning

confidence: 99%

QuadMixer

et al. 2019

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We propose QuadMixer, a novel interactive technique to compose quad mesh components preserving the majority of the original layouts. Quad Layout is a crucial property for many applications since it conveys important information that would otherwise be destroyed by techniques that aim only at preserving shape. Our technique keeps untouched all the quads in the patches which are not involved in the blending. We first perform robust boolean operations on the corresponding triangle meshes. Then we use this result to identify and build new surface patches for small regions neighboring the intersection curves. These blending patches are carefully quadrangulated respecting boundary constraints and stitched back to the untouched parts of the original models. The resulting mesh preserves the designed edge flow that, by construction, is captured and incorporated to the new quads as much as possible. We present our technique in an interactive tool to show its usability and robustness.

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“…With the rapid development of electronic media technology, animation in the new century has become the most familiar art form in world pop culture [1]. e animation method has stepped into the "computer-made era" from the "handmade era" in the last century.…”

Section: Introductionmentioning

confidence: 99%

Material Innovation of Animation Modeling Design Based on Visual Symbol Theory

Cao

2022

Wireless Communications and Mobile Computing

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Character modeling is an important link in animation design, and it is one of the keys to determining whether an animation is successful or not, as well as determining the value of animation and related industries. This paper examines the role of material innovation in the development of animation art, as well as the impact of various materials on animation production technology and design style, using the visual symbol theory as a guide. GA (genetic algorithm) is used in the comic design process to improve the fidelity and efficiency of the artwork. GA performs data training of multiple components; selection and crossover operations are carried out continuously according to the fitness threshold; and the particle swarm optimization strategy is added. This algorithm increases the rate of design reuse and efficiency, as well as the ability to determine the best component combination scheme.

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Quadrangulation of non-rigid objects using deformation metrics

Cited by 9 publications

References 41 publications

Combinatorial Construction of Seamless Parameter Domains

Combinatorial Construction of Seamless Parameter Domains

QuadMixer

Material Innovation of Animation Modeling Design Based on Visual Symbol Theory

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