From awd at cs.cmu.edu Mon Dec 1 14:56:44 2025 From: awd at cs.cmu.edu (Artur Dubrawski) Date: Mon, 1 Dec 2025 14:56:44 -0500 Subject: [CSD MS Thesis] 5th Year M.S. Thesis Presentation - Tianyue Ruby Sun - December 2, 2025 In-Reply-To: References:

Message-ID: Dear Autonians, Come see Tianyue present her masters work tomorrow morning! Cheers Artur On Mon, Dec 1, 2025 at 10:51?AM Angy Malloy wrote: > Tianyue Ruby Sun > > Tuesday, December 2, 2025 > > 9:30 AM > > Gates Building, Room 8102 > > Title: > > Remote Photoplethysmography: Spatiotemporal Architecture > > Abstract: > Remote photoplethysmography (rPPG) enables contactless measurement of > physiological signals such as heart rate and respiratory rate from videos, > offering a practical alternative to traditional contact-based sensor > measurements. Recent deep learning methods have achieved strong rPPG > accuracy, but these approaches often depend on controlled settings and > struggle to generalize to real-world environments with motion and varying > lighting. These limitations are in part due to the reliance on techniques > such as manual parameter tuning and the need for large labelled datasets > that are often captured under clean conditions. > > This research thesis presents an exploration of the end-to-end rPPG > pipeline. The primary contribution is a novel spatiotemporal architecture > for rPPG that combines DINOv2, a vision transformer, and Chronos, a time > series model. This represents the first multimodal rPPG framework that > leverages a combination of spatial and temporal representations from > foundation models for physiological measurement. The two foundation models > are kept frozen, and a lightweight prediction head is trained. > > The proposed model achieves strong performance on the synthetic SCAMPS > dataset for heart rate estimation, establishing benchmarks for future rPPG > research. On real-world datasets, including PURE and UBFC-rPPG, the model > demonstrates effective learning of blood volume pulse (BVP) waveforms and > heart rate estimation, despite the increased errors reflecting the > difficulty of more challenging conditions. Extensions of the model to > respiratory rate illustrate the generalizability of the architecture across > different physiological measurement tasks. Overall, the results show that > foundation models can improve rPPG robustness and generalization, offering > a promising path towards practical rPPG systems with applications in > inpatient monitoring, telehealth, and emergency response. > > In addition to model development, this thesis analyzes components of the > full rPPG pipeline, including signal processing and ground truth > extraction. It is shown that common signal processing methods applied to > the same BVP signal can lead to discrepancies in the estimation of the > scalar heart rate value. Moreover, the method of obtaining the ground truth > from data affects the reported performances. These insights motivate the > need to further discuss reliable signal processing and evaluation > procedures to ensure reliable comparisons and interpretations of rPPG > methods. > > Thesis Summary: > > https://drive.google.com/drive/folders/1HFwJZlk0jV-FC6h4TDbuCu2PzQgnD7FK > > Thesis Committee: > Artur Dubrawski, Chair > Laszlo Jeni > -------------- next part -------------- An HTML attachment was scrubbed... URL: From awd at cs.cmu.edu Wed Dec 10 13:04:01 2025 From: awd at cs.cmu.edu (Artur Dubrawski) Date: Wed, 10 Dec 2025 13:04:01 -0500 Subject: Marinus Analytics testimony today at US Congress hearing In-Reply-To: References: Message-ID: Dear Autonians, Please note this very debilitating experience for the Auton Lab spinoff company. Cheers, AWD ---------- Forwarded message --------- From: Alyson Stockton Date: Wed, Dec 10, 2025 at 12:02?PM Subject: Marinus Analytics testimony today at Congressional hearing To: Alyson Stockton Cc: Cara Jones Dear friends of Marinus Analytics, I would like to share that today at 2 pm EST, Cara will be testifying before the Congressional subcommittee on Cybersecurity, Information Technology, and Government Innovation. The topic is Using Modern Tools to Counter Human Trafficking. This is affirming of our subject matter expertise in the fight against sex trafficking, and Cara will speak on how Traffic Jam supports victim-centered investigations. The hearing will be live streamed on the link below, and recordings are available post-event. https://oversight.house.gov/hearing/using-modern-tools-to-counter-human-trafficking/ Thank you all for your support of our team and our mission. Best wishes, Alyson and the Marinus team -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 110344 bytes Desc: not available URL: From awd at cs.cmu.edu Wed Dec 10 13:33:46 2025 From: awd at cs.cmu.edu (Artur Dubrawski) Date: Wed, 10 Dec 2025 13:33:46 -0500 Subject: Marinus Analytics testimony today at US Congress hearing In-Reply-To: References:

Message-ID: of course I meant NOBILITATING and not debilitating !!! (silly spell checker, and sillier I for not double checking) On Wed, Dec 10, 2025 at 1:04?PM Artur Dubrawski wrote: > Dear Autonians, > > Please note this very debilitating experience for the Auton Lab spinoff > company. > > Cheers, > AWD > > ---------- Forwarded message --------- > From: Alyson Stockton > Date: Wed, Dec 10, 2025 at 12:02?PM > Subject: Marinus Analytics testimony today at Congressional hearing > To: Alyson Stockton > Cc: Cara Jones > > > Dear friends of Marinus Analytics, > > I would like to share that today at 2 pm EST, Cara will be testifying > before the Congressional subcommittee on Cybersecurity, Information > Technology, and Government Innovation. The topic is Using Modern Tools to > Counter Human Trafficking. This is affirming of our subject matter > expertise in the fight against sex trafficking, and Cara will speak on how > Traffic Jam supports victim-centered investigations. The hearing will be > live streamed on the link below, and recordings are available post-event. > > > https://oversight.house.gov/hearing/using-modern-tools-to-counter-human-trafficking/ > > Thank you all for your support of our team and our mission. > > Best wishes, > > Alyson and the Marinus team > > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 110344 bytes Desc: not available URL: From awd at cs.cmu.edu Tue Dec 16 11:53:16 2025 From: awd at cs.cmu.edu (Artur Dubrawski) Date: Tue, 16 Dec 2025 11:53:16 -0500 Subject: listen to an excellent interview of Cara Jones, CEO of Marinus Analytics Message-ID: Team, Our own, former Autonian, Cara Jones has recently testified to the US Congress about our spinoff company Marinus'es role in combating human trafficking in the US and overseas. That briefing has been followed up by a good interview linked below. https://www.pghtech.org/podcasts/Marinus Cheers Artur -------------- next part -------------- An HTML attachment was scrubbed... URL: From awd at cs.cmu.edu Wed Dec 17 13:22:09 2025 From: awd at cs.cmu.edu (Artur Dubrawski) Date: Wed, 17 Dec 2025 13:22:09 -0500 Subject: Fwd: Research mentor training for postgraduates In-Reply-To: References: Message-ID: Can be useful to some of us. AWD ---------- Forwarded message --------- From: Jen Weidenhof Date: Wed, Dec 17, 2025, 12:55?PM Subject: Research mentor training for postgraduates To: , Amit Acharya , Alessandro Acquisti , Anil Ada , Alexis Adams , Henny Admoni , Mustafa Akan , Khaled Al Masaeed < masaeed at andrew.cmu.edu>, Laurence Ales , Vincent Aleven , John Alison , John Anderson , Harrison Apple , Bruce Armitage , W. 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