About

I am a project scientist at Centro Pi - IMPA, in Rio de Janeiro, Brasil.

I was a postdoctoral fellow at Centre Borelli, in École Normale Supérieure Paris-Saclay, from January 2024 to May 2024. I got my PhD at the École Normale Supérieure Paris-Saclay in December 2023. I wrote my dissertation under the supervision of Dr. Miguel Colom, Pr. Jean-Michel Morel, and Pr. Pablo Muse. You can access a copy of my dissertation here. I earned my Master's degree at the Universidad de la República in Montevideo, Uruguay, in July 2019. I wrote my dissertation under the supervision of Pr. Elvio Accinelli. You can access a copy of my dissertation here. I got my B.S. in Mathematics in 2017, under the supervision of Dr. Jorge Iglesias, at the School of Sciences of the Universidad de la República, in Montevideo, Uruguay. I also earned my B.S. in Economics in 2016 from the School of Economics of the same University.

Research

International Peer-reviewed Journal Articles

  1. M. Gardella, P. Musé, M. Colom, J.-M Morel (2024). Image Forgery Detection Based on Noise Inspection: Analysis and Refinement of the Noisesniffer Method. Image Processing On Line, 14 (2024), pp. 86–115. [doi:10.5201/ipol.2023.420] [Article]
  2. Y. Li, M. Gardella, Q. Bammey, T. Nikoukhah, R. Grompone von Gioi, M. Colom, J.-M. Morel (2023). A Signal-dependent Video Noise Estimator Via Inter-frame Signal Suppression. Image Processing On Line, 13 (2023), pp. 280–313. [doi:10.5201/ipol.2024.462] [Article]
  3. M. Gardella, P. Musé (2022). Forensic Similarity for Source Camera Model Comparison. Image Processing On Line, 12 (2022), pp. 480–489. [doi:10.5201/ipol.2022.424] [Article] Best paper award – MLBriefs 2022.
  4. M. Gardella, P. Musé (2022). Image Forgery Detection via Forensic Similarity Graphs. Image Processing On Line, 12 (2022), pp. 490–500. [doi:10.5201/ipol.2022.432] [Article] Best paper award – MLBriefs 2022.
  5. A. Nicolaï, Q. Bammey, M. Gardella, T. Nikoukhah, O. Boulant, I. Bargiotas, N. Monzón, C. Truong, B. Kerautret, P. Monasse, M. Colom (2022). The approach to reproducible research of the Image Processing On Line (IPOL) journal. Informatio. [doi:10.3390/10.35643/Info.27.1.7] [Article]
  6. M. Gardella, P. Musé, J.-M Morel, M. Colom (2021). Forgery Detection in Digital Images by Multi-Scale Noise Estimation. Journal of Imaging. [doi:10.3390/jimaging7070119] [Article]

International Peer-reviewed Conferences

  1. Y. Li, Q. Bammey, M. Gardella, T. Nikoukhah, J.-M. Morel, M. Colom, R. Grompone von Gioi (2024). MaskSim: Detection of Synthetic Images by Masked Spectrum Similarity Analysis. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops. [Article]
  2. M. Tailanián, M. Gardella, A. Pardo, P. Musé (2024). Diffusion models meet image counter-forensics. IEEE/CVF Winter Conference on Applications of Computer Vision (WACV). [Article]
  3. M. Gardella, P. Musé, M. Colom, J.-M. Morel, D. Perraud (2023). PRNU-based source camera statistical certification. IEEE International Workshop on Information Forensics and Security(WIFS). [doi:10.1109/WIFS58808.2023.10375045] [Article]
  4. Y. Li, M. Gardella, Q. Bammey, T. Nikoukhah, R. Grompone von Gioi, M. Colom, J.-M. Morel (2023). A contrario detection of h. 264 video double compression. 2023 IEEE International Conference on Image Processing (ICIP). [doi:10.1109/ICIP49359.2023.10222775] [Article]
  5. Y. Li, M. Gardella, Q. Bammey, T. Nikoukhah, R. Grompone von Gioi, M. Colom, J.-M. Morel (2022). Video Signal-Dependent Noise Estimation via Inter-Frame Prediction. 2022 IEEE International Conference on Image Processing (ICIP). [doi:10.1109/ICIP46576.2022.9897605] [Article]
  6. M. Gardella, T. Nikoukhah, Y. Li, Q. Bammey (2022). The Impact of JPEG Compression on Prior Image Noise. ICASSP 2022-2022 IEEE International Conference on Acoustics, Speech and Signal Processing. [doi:10.1109/ICASSP43922.2022.9746060] [Article]
  7. Q. Bammey, T. Nikoukhah, M. Gardella, R. Grompone von Gioi, M. Colom, J.-M. Morel (2022). Non-Semantic Evaluation of Image Forensics Tools: Methodology and Database. IEEE/CVF Winter Conference on Applications of Computer Vision. [doi:10.1109/WACV51458.2022.00244] [Article]
  8. M. Gardella, P. Musé, J.-M Morel, M. Colom (2021). NoiseSniffer: a Full Automatic Image Forgery Detector Based on Noise Analysis. 9th IEEE International Workshop on Biometrics and Forensics (IWBF). [doi:10.1109/IWBF50991.2021.9465095] [Article] Best paper award – IWBF 2021.

Book Chapters

  1. Q. Bammey, M. Colom, T. Ehret, M. Gardella, R. Grompone, J.-M Morel, T. Nikoukhah, D. Perraud, "Authentification et insertion de données cachées", chapter in "Sécurité multimédia", ISTE Science, 2021.

Talks and Workshops

  1. M. Gardella (2023). Detección de imágenes falsificadas. WIDS, Guayaquil 2023. June, 2023.
  2. M. Gardella (2023). The devil wears Prada and the Pope Balenciaga A pitch on how to spot fake images. VivaTech, Paris 2023. June, 2023.
  3. M. Gardella (2023). Noisesniffer: image forgery detection through noise analysis (Poster presentation). KHIPU, Montevideo 2023. March, 2023. Top three best posters award.
  4. M. Gardella (2022). Procesamiento de imágenes falsas Women in Data Science (WIDS) Montevideo 2022. April, 2022. Online presentation recordings (in spanish).
  5. M. Gardella, T. Nikoukhah, Q. Bammey (2021). Détection automatique de la falsification d'images. Congrès des Jeunes Chercheuses et Chercheurs en Mathématiques Appliquées (CJC-MA) 2021. October 27-29, 2021, École polytechnique, Palaiseau, France.
  6. M. Gardella et al. (2021). Enhanced Image Forensic Tools for Fact-Checkers. Conference for Truth and Trust Online (TTO) 2021. October 7 and 8, 2021. Online.
  7. M. Gardella (2017). Estimation of the Inflationary feedback coefficient in Uruguay 1985-2017. IV Conference in applied statistics. October 2017. La Paloma, Uruguay. [Presentation]
Teaching
  • [September 2020 - August 2021] Teaching assistant at the Institut Universitaire de Technologie de Sceaux, Université Paris-Saclay. Courses taught:
    • Méthodologie - Logique Mathématique
    • Statistiques et probabilités appliquées
  • [February 2014 - February 2019] Teaching assistant at the Department of Mathematics, School of Engineering, Universidad de la República. Courses taught:
    • Geometry and Linear Algebra 1
    • Geometry and Linear Algebra 2
    • Calculus 2
    • Analysis on Manifolds
    • Numerical analysis
    • Probability and Statistics
  • [February 2015 - July 2016] Teaching assistant at the Department of Mathematics, School of Economics, Universidad de la República. Courses taught:
    • Calculus
  • [May 2013 - July 2013] Teaching assistant at the Department of Mathematics, School of Sciences, Universidad de la República. Courses taught:
    • Geometry and Linear Algebra 1
    •

    Supervision

    • Bachelor supervisor (as encadrant junior, together with Miguel Colom) of Enguérand Chary and Syrine Kalleli; Centre Borelli, ENS Paris-Saclay, 2020.
    Contact

    Email: marigardella@gmail.com

    CV: PDF