Example-Based Skin Wrinkle Displacement Maps

Vanderfeesten, Ron; Bikker, Jacco

doi:10.1109/sibgrapi.2018.00034

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…[BKN02] in a greedy simulation method where lines are drawn sequentially following a flow field of wrinkle orientations. Later work extended upon this method with improved control parameters and drawing methods [VB18,LXZ07,LLLC11]. Recently, Weiss et al .…”

Section: Related Workmentioning

confidence: 99%

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Stylize My Wrinkles: Bridging the Gap from Simulation to Reality

Weiss,

Stanhope,

Chandran

et al. 2024

Computer Graphics Forum

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Modeling realistic human skin with pores and wrinkles down to the milli‐ and micrometer resolution is a challenging task. Prior work showed that such micro geometry can be efficiently generated through simulation methods, or in specialized cases via 3D scanning of real skin. Simulation methods allow to highly customize the wrinkles on the face, but can lead to a synthetic look. Scanning methods can lead to a more organic look for the micro details, however these methods are only applicable to small skin patches due to the required image resolution. In this work we aim to overcome the gap between synthetic simulation and real skin scanning, by proposing a method that can be applied to large skin regions (e.g. an entire face) with the controllability of simulation and the organic look of real micro details. Our method is based on style transfer at its core, where we use scanned displacement maps of real skin patches as style images and displacement maps from an artist‐friendly simulation method as content images. We build a library of displacement maps as style images by employing a simplified scanning setup that can capture high‐resolution patches of real skin. To create the content component for the style transfer and to facilitate parameter‐tuning for the simulation, we design a library of preset parameter values depicting different skin types, and present a new method to fit the simulation parameters to scanned skin patches. This allows fully‐automatic parameter generation, interpolation and stylization across entire faces. We evaluate our method by generating realistic skin micro details for various subjects of different ages and genders, and demonstrate that our approach achieves a more organic and natural look than simulation alone.

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Section: Related Workmentioning

confidence: 99%

“…control parameters and drawing methods [VB18,LXZ07,LLLC11]. Recently, Weiss et al [WMC * 23] presented a graph-based method for skin micro details where the wrinkles are treated as the edges that connect the nodes of the graph representing the pores on the skin.…”

Section: Synthesizing Micro Geometrymentioning

confidence: 99%

Stylize My Wrinkles: Bridging the Gap from Simulation to Reality

Weiss,

Stanhope,

Chandran

et al. 2024

Computer Graphics Forum

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“…Further parameters control the spacing between the lines, thickness, and depth of the resulting wrinkles. Vanderfeesten and Bikker [VB18] later revise and refine this algorithm, by reducing the number of user‐defined parameters and working in geometry‐space instead of image‐space to avoid the dependency on the texture resolution. Li et al .…”

Section: Related Workmentioning

confidence: 99%

Graph‐Based Synthesis for Skin Micro Wrinkles

Weiss,

Moulin,

Chandran

et al. 2023

Computer Graphics Forum

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We present a novel graph‐based simulation approach for generating micro wrinkle geometry on human skin, which can easily scale up to the micro‐meter range and millions of wrinkles. The simulation first samples pores on the skin and treats them as nodes in a graph. These nodes are then connected and the resulting edges become candidate wrinkles. An iterative optimization inspired by pedestrian trail formation is then used to assign weights to those edges, i.e., to carve out the wrinkles. Finally, we convert the graph to a detailed skin displacement map using novel shape functions implemented in graphics shaders. Our simulation and displacement map creation steps expose fine controls over the appearance at real‐time framerates suitable for interactive exploration and design. We demonstrate the effectiveness of the generated wrinkles by enhancing state‐of‐art 3D reconstructions of real human subjects with simulated micro wrinkles, and furthermore propose an artist‐driven design flow for adding micro wrinkles to fictional characters.

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