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Human Mesh Modeling for Anny Body
Romain Brégier, Guénolé Fiche, Laura Bravo-Sánchez, Thomas Lucas, Matthieu Armando, Philippe Weinzaepfel, Grégory Rogez, Fabien Baradel
Anny is a scan-free open-source parametric body model using anthropometric phenotype parameters: gender, age, height, weight, calibrated from WHO population statistics.
Abstract
Parametric body models provide the structural basis for many human-centric tasks, yet existing models often rely on costly 3D scans and learned shape spaces that are proprietary and demographically narrow. We introduce Anny, a simple, fully differentiable, and scan-free human body model grounded in anthropometric knowledge from the MakeHuman community. Anny defines a continuous, interpretable shape space, where phenotype parameters (e.g. gender, age, height, weight) control blendshapes spanning a wide range of human forms--across ages (from infants to elders), body types, and proportions. Calibrated using WHO population statistics, it provides realistic and demographically grounded human shape variation within a single unified model. Thanks to its openness and semantic control, Anny serves as a versatile foundation for 3D human modeling--supporting millimeter-accurate scan fitting, controlled synthetic data generation, and Human Mesh Recovery (HMR). We further introduce Anny-One, a collection of 800k photorealistic images generated with Anny, showing that despite its simplicity, HMR models trained with Anny can match the performance of those trained with scan-based body models. The Anny body model and its code are released under the Apache 2.0 license, making Anny an accessible foundation for human-centric 3D modeling.
How to read this
- Category
- Method / open resource: a parametric human body model
- Contributions
- Anny, a fully differentiable, scan-free parametric body model grounded in MakeHuman anthropometric knowledge with a continuous, interpretable shape space.
- Phenotype parameters (gender, age, height, weight) controlling blendshapes across ages and body types, calibrated using WHO population statistics.
- Anny-One, a collection of 800k photorealistic images, used to show HMR models trained on Anny can match scan-based body models.
- Context
- Positions itself against scan-based, proprietary, demographically narrow parametric models (the SMPL lineage), substituting anthropometric/MakeHuman priors for learned scan shape spaces.
- Correctness
- Validated on scan fitting, synthetic data generation and Human Mesh Recovery, with the headline claim that it matches scan-based models on HMR; readers should note the shape space is anthropometrically parameterized rather than learned from scans, so its realism is bounded by the WHO/MakeHuman priors.
- Clarity
- Accessible framing with interpretable parameters; a first pass conveys the model, do a second pass for the blendshape construction and calibration details.
- How to read it
- Read the abstract and shape-space definition first; second pass the calibration and the Anny-One HMR comparison if you plan to use it for training data or fitting.
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