FLUXSynID: A Synthetic Face Dataset with Document and Live Images

Ismayilov, Raul; Sero, Dzemila; Spreeuwers, Luuk

doi:10.5281/zenodo.15172770

by European Commission

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Published May 9, 2025 | Version 1.0.0

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FLUXSynID: A Synthetic Face Dataset with Document and Live Images

1. University of Twente

FLUXSynID: A Synthetic Face Dataset with Document and Live Images

FLUXSynID is a high-resolution synthetic identity dataset containing 14,889 unique synthetic identities, each represented through a document-style image and three live capture variants. Identities are generated using the FLUX.1 [dev] diffusion model, guided by user-defined identity attributes such as gender, age, region of origin, and other various identity features. The dataset is created to support biometric research, including face recognition and morphing attack detection.

File Structure

Each identity has a dedicated folder (named as a 12-digit hex string, e.g., 000e23cdce23) containing the following 5 files:

000e23cdce23_f.json — metadata including sampled identity attributes, prompt, generation seed, etc. (_f = female; _m = male; _nb = non-binary)
000e23cdce23_f_doc.png — document-style frontal image
000e23cdce23_f_live_0_e_d1.jpg — live image generated with LivePortrait (_e = expression and pose)
000e23cdce23_f_live_0_a_d1.jpg — live image via Arc2Face (_a = arc2face)
000e23cdce23_f_live_0_p_d1.jpg — live image via PuLID (_p = pulid)

All document and LivePortrait/PuLID images are 1024×1024. Arc2Face images are 512×512 due to original model constraints.

Attribute Sampling and Prompting

The attributes/ directory contains all information about how identity attributes were sampled:

A set of .txt files (e.g., ages.txt, eye_shape.txt, body_type.txt) — each lists the possible values for one attribute class, along with their respective sampling probabilities.
file_probabilities.json — defines the inclusion probability for each attribute class (i.e., how likely a class such as "eye shape" is to be included in a given prompt).
attribute_clashes.json — specifies rules for resolving semantically conflicting attributes. Each clash defines a primary attribute (to be kept) and secondary attributes (to be discarded when the clash occurs).

Prompts are generated automatically using Qwen2.5 large language model, based on selected attributes, and used to condition FLUX.1 [dev] during image generation.

Live Image Generation

Each synthetic identity has three live image-style variants:

LivePortrait: expression/pose changes via keypoint-based retargeting
Arc2Face: natural variation using identity embeddings (no prompt required)
PuLID: identity-aware generation using prompt, embedding, and edge-conditioning with a customized FLUX.1 [dev] diffusion model

These approaches provide both controlled and naturalistic identity-consistent variation.

Filtering and Quality Control

Included are 9 supplementary text files listing filtered subsets of identities. For instance, file similarity_filtering_adaface_thr_0.333987832069397_fmr_0.0001.txt contains identities retained after filtering out overly similar faces using AdaFace FRS under the specified threshold and false match rate (FMR).

Usage and Licensing

This dataset is licensed under the Creative Commons Attribution Non Commercial 4.0 International (CC BY-NC 4.0) license.
You are free to use, share, and adapt the dataset for non-commercial purposes, provided that appropriate credit is given.

The images in this dataset were generated using the FLUX.1 [dev] model by Black Forest Labs, which is made available under their Non-Commercial License. While this dataset does not include or distribute the model or its weights, the images were produced using that model.

Users are responsible for ensuring that their use of the images complies with the FLUX.1 [dev] license, including any restrictions it imposes.

Acknowledgments

The FLUXSynID dataset was developed under the EINSTEIN project. The EINSTEIN project is funded by the European Union (EU) under G.A. no. 101121280 and UKRI Funding Service under IFS reference 10093453. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect the views of the EU/Executive Agency or UKRI. Neither the EU nor the granting authority nor UKRI can be held responsible for them.

Files

FLUXSynID.zip

Files (11.7 GB)

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FLUXSynID.zip md5:af90cbb852c21c5ac3e5361f3885258d	11.7 GB	Preview Download

Additional details

References: arXiv:2407.03168 (arXiv); arXiv:2404.16022v2 (arXiv); arXiv:2403.11641v2 (arXiv); https://github.com/black-forest-labs/flux (Other); arXiv:2412.15115 (arXiv)

European Commission
EINSTEIN - Interoperable applications suite to enhance European identity and document Security and fraud detection 101121280

Repository URL: https://github.com/Raul2718/FLUXSynID

Guo, J., Zhang, D., Liu, X., Zhong, Z., Zhang, Y., Wan, P., & Zhang, D. (2025). LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control. arXiv:2407.03168. https://arxiv.org/abs/2407.03168
Guo, Z., Wu, Y., Chen, Z., Chen, L., Zhang, P., & He, Q. (2024). PuLID: Pure and Lightning ID Customization via Contrastive Alignment. arXiv:2404.16022. https://arxiv.org/abs/2404.16022
Papantoniou, F. P., Lattas, A., Moschoglou, S., Deng, J., Kainz, B., & Zafeiriou, S. (2024). Arc2Face: A Foundation Model for ID-Consistent Human Faces. arXiv:2403.11641. https://arxiv.org/abs/2403.11641
Qwen et al. (2025). Qwen2.5 Technical Report. arXiv:2412.15115. https://arxiv.org/abs/2412.15115
Black Forest Labs. (2024). FLUX. GitHub. https://github.com/black-forest-labs/flux

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Zenodo

License: Creative Commons Attribution Non Commercial 4.0 International

No further description. Read more; FLUX.1 [dev] Non-Commercial License

FLUX.1 [dev] Non-Commercial License Black Forest Labs, Inc. (“we” or “our” or “Company”) is pleased to make available the weights, parameters and inference code for the FLUX.1 [dev] Model (as defined below) freely available for your non-commercial and non-production use as set forth in this FLUX.1 [dev] Non-Commercial License (“License”). The “FLUX.1 [dev] Model” means the FLUX.1 [dev] AI models, including FLUX.1 [dev], FLUX.1 Fill [dev], FLUX.1 Depth [dev], FLUX.1 Canny [dev], FLUX.1 Redux [dev], FLUX.1 Canny [dev] LoRA and FLUX.1 Depth [dev] LoRA, and their elements which includes algorithms, software, checkpoints, parameters, source code (inference code, evaluation code, and if applicable, fine-tuning code) and any other materials associated with the FLUX.1 [dev] AI models made available by Company under this License, including if any, the technical documentation, manuals and instructions for the use and operation thereof (collectively, “FLUX.1 [dev] Model”). By downloading, accessing, use, Distributing (as defined below), or creating a Derivative (as defined below) of the FLUX.1 [dev] Model, you agree to the terms of this License. If you do not agree to this License, then you do not have any rights to access, use, Distribute or create a Derivative of the FLUX.1 [dev] Model and you must immediately cease using the FLUX.1 [dev] Model. If you are agreeing to be bound by the terms of this License on behalf of your employer or other entity, you represent and warrant to us that you have full legal authority to bind your employer or such entity to this License. If you do not have the requisite authority, you may not accept the License or access the FLUX.1 [dev] Model on behalf of your employer or other entity. 1. Definitions. Capitalized terms used in this License but not defined herein have the following meanings: a. “Derivative” means any (i) modified version of the FLUX.1 [dev] Model (including but not limited to any customized or fine-tuned version thereof), (ii) work based on the FLUX.1 [dev] Model, or (iii) any other derivative work thereof. For the avoidance of doubt, Outputs are not considered Derivatives under this License. b. “Distribution” or “Distribute” or “Distributing” means providing or making available, by any means, a copy of the FLUX.1 [dev] Models and/or the Derivatives as the case may be. c. “Non-Commercial Purpose” means any of the following uses, but only so far as you do not receive any direct or indirect payment arising from the use of the model or its output: (i) personal use for research, experiment, and testing for the benefit of public knowledge, personal study, private entertainment, hobby projects, or otherwise not directly or indirectly connected to any commercial activities, business operations, or employment responsibilities; (ii) use by commercial or for-profit entities for testing, evaluation, or non-commercial research and development in a non-production environment, (iii) use by any charitable organization for charitable purposes, or for testing or evaluation. For clarity, use for revenue-generating activity or direct interactions with or impacts on end users, or use to train, fine tune or distill other models for commercial use is not a Non-Commercial purpose. d. “Outputs” means any content generated by the operation of the FLUX.1 [dev] Models or the Derivatives from a prompt (i.e., text instructions) provided by users. For the avoidance of doubt, Outputs do not include any components of a FLUX.1 [dev] Models, such as any fine-tuned versions of the FLUX.1 [dev] Models, the weights, or parameters. e. “you” or “your” means the individual or entity entering into this License with Company. 2. License Grant. a. License. Subject to your compliance with this License, Company grants you a non-exclusive, worldwide, non-transferable, non-sublicensable, revocable, royalty free and limited license to access, use, create Derivatives of, and Distribute the FLUX.1 [dev] Models solely for your Non-Commercial Purposes. The foregoing license is personal to you, and you may not assign or sublicense this License or any other rights or obligations under this License without Company’s prior written consent; any such assignment or sublicense will be void and will automatically and immediately terminate this License. Any restrictions set forth herein in regarding the FLUX.1 [dev] Model also applies to any Derivative you create or that are created on your behalf. b. Non-Commercial Use Only. You may only access, use, Distribute, or creative Derivatives of or the FLUX.1 [dev] Model or Derivatives for Non-Commercial Purposes. If You want to use a FLUX.1 [dev] Model a Derivative for any purpose that is not expressly authorized under this License, such as for a commercial activity, you must request a license from Company, which Company may grant to you in Company’s sole discretion and which additional use may be subject to a fee, royalty or other revenue share. Please contact Company at the following e-mail address if you want to discuss such a license: info@blackforestlabs.ai. c. Reserved Rights. The grant of rights expressly set forth in this License are the complete grant of rights to you in the FLUX.1 [dev] Model, and no other licenses are granted, whether by waiver, estoppel, implication, equity or otherwise. Company and its licensors reserve all rights not expressly granted by this License. d. Outputs. We claim no ownership rights in and to the Outputs. You are solely responsible for the Outputs you generate and their subsequent uses in accordance with this License. You may use Output for any purpose (including for commercial purposes), except as expressly prohibited herein. You may not use the Output to train, fine-tune or distill a model that is competitive with the FLUX.1 [dev] Model. 3. Distribution. Subject to this License, you may Distribute copies of the FLUX.1 [dev] Model and/or Derivatives made by you, under the following conditions: a. you must make available a copy of this License to third-party recipients of the FLUX.1 [dev] Models and/or Derivatives you Distribute, and specify that any rights to use the FLUX.1 [dev] Models and/or Derivatives shall be directly granted by Company to said third-party recipients pursuant to this License; b. you must make prominently display the following notice alongside the Distribution of the FLUX.1 [dev] Model or Derivative (such as via a “Notice” text file distributed as part of such FLUX.1 [dev] Model or Derivative) (the “Attribution Notice”): “The FLUX.1 [dev] Model is licensed by Black Forest Labs. Inc. under the FLUX.1 [dev] Non-Commercial License. Copyright Black Forest Labs. Inc. IN NO EVENT SHALL BLACK FOREST LABS, INC. 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In the case of Distribution of Derivatives made by you, you must not misrepresent or imply, through any means, that the Derivatives made by or for you and/or any modified version of the FLUX.1 [dev] Model you Distribute under your name and responsibility is an official product of the Company or has been endorsed, approved or validated by the Company, unless you are authorized by Company to do so in writing. 4. Restrictions. You will not, and will not permit, assist or cause any third party to a. use, modify, copy, reproduce, create Derivatives of, or Distribute the FLUX.1 [dev] Model (or any Derivative thereof, or any data produced by the FLUX.1 [dev] Model), in whole or in part, for (i) any commercial or production purposes, (ii) military purposes, (iii) purposes of surveillance, including any research or development relating to surveillance, (iv) biometric processing, (v) in any manner that infringes, misappropriates, or otherwise violates any third-party rights, or (vi) in any manner that violates any applicable law and violating any privacy or security laws, rules, regulations, directives, or governmental requirements (including the General Data Privacy Regulation (Regulation (EU) 2016/679), the California Consumer Privacy Act, and any and all laws governing the processing of biometric information), as well as all amendments and successor laws to any of the foregoing; b. alter or remove copyright and other proprietary notices which appear on or in any portion of the FLUX.1 [dev] Model; c. utilize any equipment, device, software, or other means to circumvent or remove any security or protection used by Company in connection with the FLUX.1 [dev] Model, or to circumvent or remove any usage restrictions, or to enable functionality disabled by FLUX.1 [dev] Model; or d. offer or impose any terms on the FLUX.1 [dev] Model that alter, restrict, or are inconsistent with the terms of this License. e. violate any applicable U.S. and non-U.S. export control and trade sanctions laws (“Export Laws”) in connection with your use or Distribution of any FLUX.1 [dev] Model; f. directly or indirectly Distribute, export, or otherwise transfer FLUX.1 [dev] Model (a) to any individual, entity, or country prohibited by Export Laws; (b) to anyone on U.S. or non-U.S. government restricted parties lists; or (c) for any purpose prohibited by Export Laws, including nuclear, chemical or biological weapons, or missile technology applications; 3) use or download FLUX.1 [dev] Model if you or they are (a) located in a comprehensively sanctioned jurisdiction, (b) currently listed on any U.S. or non-U.S. restricted parties list, or (c) for any purpose prohibited by Export Laws; and (4) will not disguise your location through IP proxying or other methods. 5. 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Your dealings or correspondence with third parties and your use of or interaction with any Third Party Materials are solely between you and the third party. Company does not control or endorse, and makes no representations or warranties regarding, any Third Party Materials, and your access to and use of such Third Party Materials are at your own risk. 10. Trademarks. You have not been granted any trademark license as part of this License and may not use any name or mark associated with Company without the prior written permission of Company, except to the extent necessary to make the reference required in the Attribution Notice as specified above or as is reasonably necessary in describing the FLUX.1 [dev] Model and its creators. 11. General. This License will be governed and construed under the laws of the State of Delaware without regard to conflicts of law provisions. If any provision or part of a provision of this License is unlawful, void or unenforceable, that provision or part of the provision is deemed severed from this License, and will not affect the validity and enforceability of any remaining provisions. The failure of Company to exercise or enforce any right or provision of this License will not operate as a waiver of such right or provision. This License does not confer any third-party beneficiary rights upon any other person or entity. This License, together with the Documentation, contains the entire understanding between you and Company regarding the subject matter of this License, and supersedes all other written or oral agreements and understandings between you and Company regarding such subject matter. No change or addition to any provision of this License will be binding unless it is in writing and signed by an authorized representative of both you and Company. Read more

Technical metadata

Created: May 9, 2025
Modified: May 14, 2025

EU Open Research Repository

EU Open Research Repository

Research and Innovation

FLUXSynID: A Synthetic Face Dataset with Document and Live Images

FLUXSynID: A Synthetic Face Dataset with Document and Live Images

File Structure

Attribute Sampling and Prompting

Live Image Generation

Filtering and Quality Control

Usage and Licensing

Acknowledgments

Files

FLUXSynID.zip

Files (11.7 GB)

Additional details

Related works

Funding

Software

References

About

Submission

EU Open Research Repository

EU Open Research Repository

Research and Innovation

FLUXSynID: A Synthetic Face Dataset with Document and Live Images

Creators

Description

FLUXSynID: A Synthetic Face Dataset with Document and Live Images

File Structure

Attribute Sampling and Prompting

Live Image Generation

Filtering and Quality Control

Usage and Licensing

Acknowledgments

Files

FLUXSynID.zip

Files (11.7 GB)

Additional details

Related works

Funding

Software

References