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Job title: Engineer in Generative AI and Social Robotics

Context:

This position is part of the PostGenAI@Paris project, an interdisciplinary research program jointly led by Sorbonne University, AP-HP (IHU ICAN), and Enchanted Tools. The project aims to develop a mobile social robot powered by generative AI to support meaningful interactions between patients, caregivers, and healthcare professionals. The platform used will be the Mirokai robot (by Enchanted Tools).

Missions:

– Build a conversational interaction layer based on User-VLM 360.

– Integrate navigation, speech, visual perception, and facial expression modules on Mirokai.

– Model social behaviors such as group entry, gaze, and role-sensitive interaction.

– Implement robot-human interactions while moving in real-world hospital environments.

– Participate in the design of clinical scenarios and support early data collection.

– Collaborate with researchers, clinicians, and industrial partners.

Required profile:

– Engineering degree or Master’s in AI, robotics, computer science, or a related field.

– Prior experience in a research lab or robotics/AI industry.

– Strong interest in human-robot interaction and generative AI for social impact.

– Motivation to transition toward a PhD is highly encouraged.

Required skills:

– Proficient in Python, ROS2, and distributed development tools (Docker, Git).

– Solid knowledge in mobile robotics and multimodal perception.

– Experience with generative models (LLMs, VLMs), NLP or vision systems.

– Good command of technical and scientific English.

– Autonomy, rigor, and a collaborative mindset in interdisciplinary settings.

Additional information :

– Location: ISIR, Sorbonne University, Paris

– Contract: 12-month fixed-term contract (renewable)

– Desired start date: June / July 2025

Contact person :

– Mahdi Khoramshahi ; mahdi.khoramshahi@isir.upmc.fr

– Application: Send your application by email, with [Application] in the subject line, a CV and a covering letter.

– Application deadline: 31 May 2025

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Job title: Machine learning for human-robot collaboration

Context and objectives :

This position focuses on developing machine learning techniques to enhance human awareness in human-robot interaction by integrating situation assessment and action planning. The successful candidate will contribute to cutting-edge research at the intersection of robotics, artificial intelligence, and human interaction, with an emphasis on designing and evaluating robotic systems that facilitate seamless collaboration with humans.

The position is for 18 months contract, but there is a possibility to be extended depending on the performance and circumstances. The position is open at both the engineer and post-doctoral levels for candidates with a strong background in machine learning, human-machine interaction, or robotics.

Responsibilities:

– Develop advanced situation assessment techniques using machine learning to accurately represent user preferences, behaviors, and characteristics based multimodal data to efficiently plan actions.

– Collaborate with interdisciplinary teams including computer scientists, humanities, and designers to ensure the usability and effectiveness of developed techniques.

– Publish research findings in top-tier conferences and journals in the field of Human-Machine Interaction and Machine Learning (mainly at the post-doc level)

Requirements :

The successful candidate should have:

– Experience in human-machine interaction

– Good knowledge of Machine Learning Techniques

– Good knowledge of experimental design and statistics

– Excellent publication record

– Strong skills in Python

– Willing to work in multi-disciplinary and international teams

– Good communication skills

Additional information:

– Contract start date: as soon as possible

– Contract duration: 18 months

– Quota of work : 100%

– Level of education required: Master’s degree / Engineering school – Doctorate

– Salary: depending on experience

– Host laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Application :

Interested candidates should submit the following by email in a single PDF file to: mohamed.chetouani[@]sorbonne-universite.fr with the subject: Application ML for Human-Robot Collaboration

– Curriculum vitae with 2 references (recommendation letters are also welcome)

– One-page summary of research background and interests

– At least three papers (either published, accepted for publication, or pre-prints) demonstrating expertise in one or more of the areas mentioned above

– Doctoral dissertation abstract and the expected date of graduation for a post-doc position levale (for those who are currently pursuing a Ph.D)

Application’s deadline: April 21, 2025.

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Job title: 1.5-year post-doctorate in the ethics of open-ended learning in robotics and AI

Context:

The PILLAR-Robots European project (https://pillar-robots.eu) aims at developing a new generation of robots endowed with a higher level of autonomy, that are able to determine their own goals and establish their own strategies, creatively building on the experience acquired during their lifetime to fulfil the requests of their human designers/users in real-life application use-cases. To do so, it aims to implement a new theoretical extension of the reinforcement learning formalism, called the purpose framework*, which constitutes a domain-independent abstraction of a set of goals that expresses what the designer/user wants from the robot. This enables us to constraint robots’ autonomous exploration and learning to (1) focus on task- relevant objects and parts of the environment, and to (2) avoid reaching particular states of the environment or acting in ways that misalign with humans’ objectives, preferences and values.

*Baldassarre, G., Duro, R. J., Cartoni, E., Khamassi, M., Romero, A., & Santucci, V. G. (2024). Purpose for Open-Ended Learning Robots: A Computational Taxonomy, Definition, and Operationalisation. arXiv preprint arXiv:2403.02514.

Location and environment:

The post-doc position will be located in the Institute of Intelligent Systems and Robotics (ISIR, http://www.isir.upmc.fr), Paris, France. ISIR belongs to Sorbonne Université, CNRS and INSERM, and is located in the center of Paris, thus at walking distance from Seine River, from other academic institutions (La Sorbonne, Collège de France, Muséum d’Histoire Naturelle, Ecole Normale Supérieure, Université Paris Cité, Hôpital la Pitié Salpêtrière), and from famous monuments (Notre Dame, Conciergerie, Panthéon, Théâtre du Châtelet, Institut du Monde Arabe). Speaking or understanding French is not required. This work will be done in close collaborations with philosophers, engineers and computational neuroscientists of the PILLAR-Robots European consortium.

Missions:

The post-doc work will investigate possibilities of alignment and misalignement in such purposeful open-ended learning robots. In particular, research shall be done on how the combination of PILLAR’s robot motivational engine relying on the purpose framework with large language models (LLMs) can facilitate alignment, and under which conditions. Explainability, trust and efficient human-robot coordination will be evaluated in a set of real-world scenarios, corresponding to the project’s three use cases: a warehouse scenario, an agricultural robotics scenario and an edutainment scenario. An ethical analysis will be carried out by consulting consortium members on all three scenarios.

Required profile:

We are looking for highly motivated candidates with a strong academic record. An excellent background is expected in machine learning, AI, cognitive robotics or computational neuroscience. Significant experience in robot cognitive architectures, AI alignment, LLMs, or computational modeling for neuroscience or psychology will be appreciated. Prior knowledge in philosophy of mind and moral philosophy will be a plus. Eligibility: PhD degree in a quantitative discipline. There is no nationality or age criteria.

Required skills:

Mastery of reinforcement learning and game theory, very good level in applied maths, and advanced programming skills in modern C++ and python are required. Very good level of English (written, spoken).

General information :

– Position type : Post-doctorate

– Contract start date: 01/10/2025

– Contract duration: 18 months (until 30/03/2027)

– Working hours: 100%.

– Desired experience: from Beginner

– Level of education required : PhD

– Salary : Standard post-doc salary

– Source of funding : European PILLAR-Robots project

– Host laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Contact person:

– Mehdi Khamassi

– Tel:+33650764492 Email : mehdi.khamassi@sorbonne-universite.fr

– Application: Send your application by e-mail, with [PILLAR post-doc application] in the subject line, a CV, a cover letter (max 2 pages) and a list of two references.

– Application deadline: 07/05/2025

Job title: Robotics and open source machine learning, application to mobile manipulation robots

Context:

This recruitment is part of the Comité Robotique France 2030 project, which aims to increase exchanges between public research and the business world, particularly at national level, by facilitating the transfer of knowledge and results from research to the industrial players likely to transform them in different fields of application. The field concerned is the design of intelligent robotic systems, in all sectors of activity that may be impacted by these technologies, and in a context of territorial re-industrialization and digital, ecological and energy transformation. The proposed actions aim to develop the “RobDeepTech” and “open-source robotics” technological offerings, and to facilitate their integration and valorization.

Missions:

The aim of this position is twofold: (1) to identify the main contributions to open-source robotics on a national scale and help to publicize them, and (2) to make a significant contribution to one or more open-source projects at the intersection between machine learning and robotics.

The first part of the project will involve working with members of various CNRS laboratories to map the main open-source tools made available to the community by French laboratories. This work will be complemented by participation in activities designed to raise awareness of these tools among those likely to use them in different fields of application.

The second part consists in contributing to one of ISIR’s machine learning and robotics projects, with the aim of making the developments available as open-source software. The project will focus on the development of our mobile manipulator robots (https://www.isir.upmc.fr/projets/apprentissage-robotique-pour-la-manipulation-mobile-et- linteraction-sociale/). The candidate will take part in the integration process currently underway to develop a platform including various capabilities stemming from the unit’s research work. This includes work on object grasping (https://qdgrasp.github.io/), manipulation with tactile feedback, language and multi-modal models, as well as social interaction. The work carried out is intended to be made available to the community. It will therefore be distributed as open source.

The experimental dimension is essential: the work carried out will be applied to real robots available at ISIR (Bras Franka, TIAGO, PR2) in interaction with the team in place for these developments, which this position will reinforce.

Required profile:

Candidates for this position should have significant experience in robotics and, if possible, also in machine learning. Candidates with a strong background in machine learning with limited experience in robotics may also apply if their work can be applied to robotics. Candidates are therefore expected to have a thesis in robotics, or with robotics applications, or a thesis in machine learning on a theme opening up possibilities in robotics.

Contributions to open-source projects are not mandatory, but will be appreciated.

Candidates with in-depth experience of integration on real robots are particularly encouraged to apply.

Required skills:

– Experience in robotics, at least on simulators (pybullet, isaac-sim, gazebo, etc.), but ideally on real robots and under ROS. If not, strong experience in machine learning will be expected on methods that can apply to robotics

– Experience in machine learning is desired, but not mandatory

– Willingness to interact with different research teams in France

– Team work

– Good communication skills

General information :

– Type of position : Post-Doc

– Contract start date: As soon as possible

– Contract duration: 36 months

– Working hours: 100% of normal working hours

– Desired level of study: Thesis

– Host laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Contact details:

– Stéphane Doncieux / Aline Baudry

– Tel:+33144278745

– Email: stephane.doncieux@sorbonne-universite.fr / aline.baudry@sorbonne-universite.fr

– Application: Send your application by email, with [job title] in the subject line, a CV and a covering letter.

– Deadline for applications: 10/02/2025

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Post-doc “Flexible robotics and digital twins for cardiac surgery”

Context:

This postdoctoral position is part of the RHU-ICELAND project, involving several academic, hospital, and industrial partners. The objective of the project is to develop a new transfemoral mitral valve annuloplasty solution that integrates intracardiac ultrasound imaging and robotics. This approach allows intervention on a beating heart without extracorporeal circulation, offering a mitral valve repair solution for high-risk patients who are ineligible for open-heart surgery and, in the long term, for most patients requiring mitral valve repair.

Direct annuloplasty involves affixing a ring or band directly onto the mitral annulus using anchors under echocardiographic and fluoroscopic guidance. The advantage of this technique is that it constrains the shape of the mitral annulus, closely replicating surgical mitral annuloplasty. The RHU-ICELAND project focuses on two key phases: developing a numerical model of the anatomy and the robotic system used to apply staples to the mitral valve, followed by designing and evaluating the robotic system, which is validated through numerical modelling.

Scientific Objectives:

Initially, the recruited postdoc will focus on the numerical modelling of anatomical structures (veins, heart, mitral valve, etc.). Preliminary work has already been carried out to design a numerical model of the heart and mitral valve with opening and closing cycles. The aim is to enhance this model for greater realism. The model will be used for clinician training, preoperative intervention planning, and validating the geometric, kinematic, and dynamic models of the robotic system (active catheter) during navigation from the entry point (femoral vein) to the target site (facing the mitral valve). The other medium- and long-term goal is to develop a realistic and, above all, patient-specific numerical model, meaning constructing the numerical model based on the patient’s preoperative images.

The recruited candidate will work closely with academic and clinical teams involved in the project, particularly when integrating the research into the final demonstrator. The postdoc will benefit from a stimulating research environment and access to clinical data provided by the project’s clinical and industrial partners. They will also participate in project management (meetings, decision-making, report writing, etc.).

Host Institution:

The recruited candidate will join the Institute of Intelligent Systems and Robotics (ISIR) at Sorbonne University and CNRS (Paris). ISIR is organized into several multidisciplinary teams, including RPI-Bio. Research areas include microrobotics, drones, surgical robotics, bionic prosthetics, social robots, and various intelligent and interactive systems (physical, virtual, or mixed-reality), as well as artificial intelligence. Applications address major societal challenges: health, the industry of the future, transportation, and personal services.

The RPI-Bio team (robotics, perception, and interaction for biomedical applications), to which the postdoc will be attached, conducts research in healthcare robotics on topics such as interactive systems for expert guidance (surgery), perception (visual and haptic), human-machine interfaces, telemedicine, and microrobotics. Recently labelled by Inserm, RPI-Bio has extensive experience in developing advanced robotic solutions for interventional medicine (orthopaedics, neurosurgery, ENT surgery, endovascular interventions, etc.).

Profile Sought:

– Expertise in robotics, mechatronics, simulation, and/or numerical modelling

– Advanced programming skills (C++, MATLAB, Python)

– Proficiency in a numerical simulation library for soft robots (e.g., SOFA) is a plus

– Enthusiasm for interdisciplinary research and a collaborative spirit

General information :

– Supervisors: Lingxiao Xun; Brahim Tamadazte

– Contract start date: as soon as possible

– Contract duration: 12 months, renewable for a further 12 months

– Salary: depending on experience

– Host laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris

Contact person:

Send a single PDF file containing: a CV, a cover letter, and any scientific articles you deem relevant to the application to lingxiao.xun@sorbonne-universite.fr and brahim.tamadazte@cnrs.fr. Please include ‘post-doc rhu’ in the subject line of the email.

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Job title: Post-doc on haptic and multisensory human-computer interactions

Context:

This post-doc is part of the NeuroHCI ANR project. The overall goal of NeuroHCI is to improve human decision making in the physical and digital worlds in interac,ve contexts. There are various scenarios in which a human makes a decision with an interac,ve system. The decision might be about a complex real-world choice assisted by a computer (e.g. medical treatment), the choice of a method to achieve a digital task (e.g. editng a photo with the preferred tool), or the way we decide the best way to perform a haptic interaction.

Missions:

The envisioned scientific approach will rely on optimizing the haptic feedback delivered to the user with relation to vision and hearing by leveraging computational models of multisensory integration. Thus, the scientific activities of the project will revolve around questions including but not limited to:

– How to ensure that the inconsistencies between what the user sees and what the user feels does not break the illusion and how to mitigate their effects on user experience?

– How visuo-haptic inconsistencies influence users’ strategies (e.g. which objects they will decide to interact with) and high-level decision making?

Required profile:

The ideal candidate must have a PhD degree and a strong background in human-computer interaction and/or cognitive science.

Required skills:

– Experience in haptics is a strong plus ;

– Strong skills in Python, Matlab or equivalent ;

– Good knowledge of experimental design, psychophysics and statistics ;

– Excellent publication record ;

– Willingness to work in a multi-disciplinary team ;

– Good communication skills.

General Information:

  • Contract start date: at the latest 06/01/2024
  • Contract duration: 24 months
  • Working time: 100%
  • Desired experience: beginner at 4 years old
  • Level of studies required: PhD
  • Host laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

How to apply:

– David Gueorguiev ; david.gueorguiev(at)sorbonne-universite.fr

– Send your application by email, with [name of offer] in the subject line, a CV and a cover letter.

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Post-doc : Learning in robotics, with application to grasping

Context:

During the FET Proactive DREAM project (http://dream.isir.upmc.fr/) has been defined an approach for adaptive robotics based on open-ended learning. The main goal is to allow a robot to learn without requiring a careful preparation by an expert. This approach raises many challenges, notably learning with sparse reward, representation learning (for states and actions), model learning and exploitation, transfer learning, meta-learning and generalization. These topics are considered in simulation, but also on real robotics setup, notably in the context of grasping.

Missions:

This position aims at contributing to these topics in the context of several European projects, in particular SoftManBot, Corsmal, INDEX and Learn2Grasp. Calling upon previous works in the research team, the proposed approaches need to be easy to adapt to different robotic platforms and will thus be applied to different robots (Panda arm from Franka-Emika, Baxter, PR2 or TIAGO, for instance).

Required profile:

Candidates for the position must have a PhD degree in machine learning or related field in which robotics applications (either simulated or real) have been considered.

Required skills:

An excellent background is expected in machine learning as well as an experience in robotics. Excellent programming skills in Python are expected.

General Information: 

  • Position Type: Post-doctoral researcher
  • Contract duration: 24 months
  • Level of education required: PhD
  • Remuneration : Remuneration according to experience
  • Location: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Contact person: 

  • Stephane Doncieux
  • stephane.doncieux(at)sorbonne-universite.fr
  • Send your application by email, with a CV and a cover letter.

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Doctoral, Postdoctoral or research engineer positions for the HCI Sorbonne group (Human Computer Interaction)

Context:

We have multiple postdoctoral and engineering positions in the HCI group (https://hci.isir.upmc.fr) at Sorbonne Université, Paris, France.

Missions:

We are searching for curious minds who want to conduct cutting-edge research at the intersection of HCI with VR, Haptics, Robotics or AI. Possible topics/areas of research are:

  • Novel Interaction techniques in VR,
  • VR and haptics for gaming or training,
  • Computational models for learning, decision making and human performance,
  • AI-based recommendation systems.

Some of our previous work in these areas:

Required profile:

For the postdoctoral position, a Phd degree in Computer science, HCI or other field related to our research areas is required.

Required skills:

  • strong programming and analytical skills,
  • strong background in at least one of the following areas (HCI, VR, Haptics, Robotics, AI).

More information : 

  • Type of position: Postdoctoral or Research Engineer position
  • Start date: as soon as possible
  • Duration: 1 to 2 years
  • Level of study required: Master 2 (for engineer), PhD (for post-doc)
  • Location: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Contacts: 

  • Gilles Bailly et Sinan Haliyo
  • Email : gilles.bailly(at)sorbonne-universite.fr ; sinan.haliyo(at)sorbonne-universite.fr
  • Application: Send your application by email, with a CV and a cover letter.
  • Application deadline: None

Download the offer

PhD offers

Thesis title: Frugal reinforcement learning for the control of the Atalante X exoskeleton

Context:

The use of exoskeletons to assist walking in individuals with disabilities is a promising solution for improving their quality of life. However, for these devices to be effective and accepted by users, it is crucial that they are personalized to each individual’s needs and capabilities. In this context, reinforcement learning can play an important role by enabling the exoskeleton control to adapt to the specific characteristics of each user, with the goal of achieving smooth, responsive movements that do not interfere with the user’s own actions. Indeed, reinforcement learning allows the controlled system to gradually refine its decisions through interaction with the environment, adapt to unforeseen usage conditions, and improve over time. However, its practical effectiveness may be limited by the need to collect a large amount of data before obtaining a high-performing control policy.

Scientific Objective and Project Description:

The objective of this PhD thesis will be to study and implement a frugal approach based on robotic priors that increase learning efficiency and enable rapid personalization of the system’s control policy — ideally within just a few hours of use.

These robotic priors refer to a set of predefined biases derived from expert knowledge of the robotic control task at hand. They will help guide the agent’s exploration of the action space and reduce the number of interactions required to obtain an effective and personalized control policy. At least two types of priors will be considered as starting points for this work:

– The first type of prior is temporal, based on the sequential nature of movements. For example, in the case of exoskeletons assisting gait, movements can be decomposed into several predefined phases that are synchronized with the user’s walking pattern. Knowing these phases helps guide the learning process toward acceptable solutions and partially addresses the credit assignment problem (i.e. the difficulty of attributing delayed rewards to the correct actions).

This direction will build upon previous work [1] using a “divide and conquer” approach, which has led to significantly improved learning efficiency over the state of the art in simulated biped locomotion tasks from single demonstrations.

– The second type of prior is geometric, based on knowledge of the three-dimensional workspace and certain key measurements. For instance, using an inertial measurement unit (IMU), one can obtain accurate and responsive data about orientation relative to the vertical axis — a crucial variable in balance control. By combining this information with other sensory and system characteristics (proprioception, dimensions, forward and inverse kinematics), the goal will be to structure and weight the agent’s observations and define auxiliary reward signals that progressively guide learning toward successful task completion. A curriculum will be defined — that is, a sequence of subtasks of increasing difficulty — to incrementally adjust the control policy parameters. For example, the curriculum may begin with static balance, proceed to executing a single step with the exoskeleton, and then to chaining multiple steps, ensuring at each stage that performance on earlier subtasks is not degraded.

These approaches will accelerate online learning, but the starting point will always be a policy pretrained in simulation, using a reasonably accurate dynamic model of the exoskeleton. This preliminary training will follow the well-known domain randomization approach and produce an initial control policy, which will then be refined through online reinforcement learning. To safely implement this online learning process, precise kinematic and dynamic constraints will be defined to ensure the safety of all experiments.

Finally, while the proposed approach will be specifically designed for controlling exoskeletons for gait assistance, it should also aim to be generalizable, at least to some extent. To verify that the method is not overly tailored to a single system, we will consider testing it on other devices that are simpler than a full walking exoskeleton.

[1] Chenu, A., Serris, O., Sigaud, O., & Perrin-Gilbert, N. (2022). Leveraging sequentiality in reinforcement learning from a single demonstration. arXiv preprint arXiv:2211.04786.

Required Profile:

We are looking for a candidate with a Master’s degree (Master 2) and solid experience in Python development, along with good knowledge of deep reinforcement learning. A strong interest in experimentation on real robotic systems is essential, and hands-on experience in this area is a major asset. The ideal candidate will be autonomous, persevering, and rigorous, with a strong interest in engineering and practical work.

Required skills:

Technical Skills

– Python Development: Advanced proficiency in Python with well-structured code practices (OOP, modularity, testing, version control).

– Deep Reinforcement Learning (Deep RL): Familiarity with standard algorithms (DQN, PPO, SAC…), their theoretical foundations, and practical implementation.

– Machine Learning Frameworks: Experience with libraries such as PyTorch, TensorFlow, or JAX.

– Robotic System Handling (ideally): Experience in controlling real robotic platforms (robotic arms, mobile robots, etc.).

– RL and Robotic Simulation: Knowledge of tools such as Mujoco and Gymnasium.

Soft Skills

– Autonomy: Ability to work independently, identify challenges, and proactively seek solutions.

– Perseverance: Enthusiasm for tackling complex technical problems and patience in the face of long, sometimes unstable, real-world robotic experiments.

– Engineering Mindset: Interest in prototyping, debugging (both hardware and software), and building robust systems.

– Communication: Ability to document and share results and methodologies effectively.

General Information:

– PhD supervisor: Nicolas Perrin-Gilbert

– The thesis is scheduled to start in September or October 2025.

– Laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Contact:

– Nicolas Perrin-Gilbert ; perrin@isir.upmc.fr

– Send your application by e-mail, with [Frugal reinforcement learning for the control of the Atalante X exoskeleton] in the subject line, a CV and a covering letter.

– Application deadline : June 6, 2025

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Thesis topic: Generation of 3D models of anatomical structures by deep learning from 2D images

Context:

The number of spinal surgery operations is rising steadily, both for trauma-related cases and for degenerative pathologies. In the latter case, the increase can be explained by the ageing of the population and possibly by changes in lifestyle, such as an increase in sedentary lifestyles and obesity. In addition to this increase in the number of cases of spinal degeneration, there has also been an increase in diagnostic capabilities, new treatment modalities and a broadening of clinical indications. As an example, around 450,000 arthrodeses were performed in 2014 in the United States alone, an increase of 118% since 1998. Lumbar fusions alone accounted for around 200,000 operations in the United States in 2015, 62% more than in 2004, at a cost of several tens of thousands of dollars per operation and a total annual cost of several billion dollars. Worldwide, several million pedicle screws are used in spinal surgery every year.

Scoliosis is treated surgically. It involves inserting screws into the vertebral pedicles to stabilise the spine. These screws are connected by rods to correct the abnormal curvature in three dimensions. This technique ensures rigid fixation, promoting vertebral fusion and improving functional and aesthetic results. The placement of these screws is complex and difficult, particularly in certain patients. The literature reports that, on average, without a support system, around 24% of pedicle screws are incorrectly positioned, ultimately leading to potentially serious neurological symptoms.

In parallel with an increase in the volume of pedicle screws placed, the field of computer-assisted surgery has seen a major boom, with the development of three-dimensional navigation solutions, the use of robotics and augmented/mixed reality methods. Each of these solutions has its own advantages and disadvantages. For example, navigation systems make pedicle screw placement more accessible to junior surgeons and reduce certain risks and complications. However, they are expensive, can extend the duration of surgical procedures, and are less accurate when not used optimally. Robotics and augmented/mixed reality provide added clinical value, particularly in the phase of inserting screws into the pedicles, given that the insertion trajectories are known.

Scientific objectives:

In a recent collaboration between Sorbonne University, Trousseau Hospital and the company SpineGuard, we removed several scientific barriers to the safe insertion of pedicle screws. In particular, we have developed a functional robotic platform for spinal surgery and real-time breach detection methods enabling us to stop the screw insertion task before a breach is created in the spinal canal. However, the approaches developed to date assume that the 3D trajectory of screw insertion into the pedicle is known precisely in the real world.

The aim of this doctoral project is precisely to address the problem of estimating the 3D trajectory of screw insertion during surgery. Currently, trajectories are planned by the surgeon on the basis of pre-operative imaging (e.g. CT scan). These trajectories are then transposed onto the patient on the day of the operation, assuming that the pre-operative 3D model corresponds exactly to what the surgeon sees.

In addition, the surgical procedure itself induces deformations in real time, which compromise the registration and planning of trajectories. In order to improve this registration and therefore the accuracy of the surgical procedure, we would like to explore the use of a conventional non-irradiating 2D visual sensor (e.g. RGB camera) to access the upper (visible) part of the spine in real time during the operation. In other words, this means observing the spinous processes and the transverse processes. The scientific challenge we propose to explore is to reconstruct each vertebra in 3D using 2D visual information from RGB images using deep learning methods. This relatively recent discipline has received growing interest from the computer vision community, significantly advancing the state of the art. Until recently, the reconstruction of a 3D model required several 2D views of the object/scene or, at the very least, a large database of annotated 2D image – 3D model (e.g. CAD) pairs, which severely limited its deployment in disciplines such as surgery due to the lack of annotated data.

To meet the scientific challenges and clinical needs, several avenues of work are envisaged. The first involves generating synthetic 2D images from 3D models, followed by domain adaptation so as to benefit from self-supervised learning of the 2D/3D transformation. This method, proposed for rigid objects, could be extended to non-rigid objects using displacement vector fields. Another promising approach is the result of recent work enabling a 3D model to be reconstructed from a simple 2D view. The tools used by these methods, and in particular triplanes, could be used for our application, by deploying them locally for each vertebra. A graph-based scene context network could then refine the initial 3D pose of each vertebra and their relative arrangement.

We already have a database of segmented and annotated vertebrae from patient scans, which we are continually adding to. As a result, the prediction of the 3D shape of vertebrae from 2D images can be enriched by the 3D information from the scans.

Support team:

It will consist of Brahim Tamadazte (DR CNRS, ISIR, SU), Catherine Achard (PU, ISIR, SU) and Raphaël Vialle (PUPH, APHP, Hôpital Trousseau, SU). Collaboration between ISIR and Hôpital Trousseau is well established, notably through participation in the EU H2020 FAROS project, the FHU SpineMed2 project, and the ANR RODEO project, resulting in several co-supervision of theses (3) and trainee doctors (2). These collaborations have enabled us to structure a significant research activity around the use of robotics, computer vision and AI to improve spinal surgery protocols.

In this type of arrangement between ISIR and a hospital centre, we usually involve one or more interns who come to do 6 to 12 month Masters placements. This enables greater interaction between the medical world and academic research. This model has amply demonstrated its translational capacity, leading to the creation of several companies (Basecamp Vascular, MovaLife) or the marketing of medical devices via specialist companies (Endocontrol, Koelis, GEMA, Moon Surgical, GE Healthcare, Robeauté and SpinGuard).

Application:

There are two funding possibilities (IUIS and ED SMAER) for this thesis project. Double applications are therefore required (deadline 5 May 2025):

– ED SMAER: https://adum.fr/as/ed/voirproposition.pl?langue=&site=edsmaer&matricule_prop=62877

– IUIS: https://lime3-app3.sorbonne-universite.fr/index.php/283197?lang=fr

Contacts :

– Catherine Achard, PU Sorbonne University (ISIR): catherine.achard@sorbonne-universite.fr

– Brahim Tamadazte, DR CNRS (ISIR): brahim.tamadazte@cnrs.fr

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Internship offers

Internship topic: Design of a virtual environment coupled with a haptic system for dental training.

Context and host laboratory :

As part of a collaboration between the Institut des Systèmes Intelligents et de Robotique (ISIR: https://www.isir.upmc.fr) and a young innovative company in training and dental surgery (Augmenteeth: https://augmenteeth.com/), we aim to transform the practice of dental implantology by integrating cutting-edge technologies to improve the precision, safety and efficiency of surgical management. This will inevitably involve the training of dental surgery students by providing technological training solutions that complement or break with current practices, as other surgical disciplines have done in recent years.

The trainee will join the Institute of Intelligent Systems and Robotics (ISIR) at Sorbonne University and the CNRS (Paris). ISIR is organised into several multidisciplinary teams, including RPI-Bio. Research activities include microrobotics, drones, surgical robotics, bionic prostheses, social robots and all kinds of intelligent and interactive systems, whether physical, virtual or mixed reality, artificial intelligence and so on. Their applications address major societal challenges in healthcare, the industry of the future, transport and personal services.

The RPI-Bio team (Robotics, Perception and Interaction for Biomedicine), to which the trainee will be attached, is conducting research into robotics for healthcare on the theme of interactive systems to assist expert gestures (surgery), perception (visual and haptic), human-machine interfaces, telemedicine and microrobotics. RPI-Bio, which recently received the Inserm label, has extensive experience in developing advanced robotic solutions for interventional medicine (orthopaedics, neurosurgery, ENT surgery, endovascular surgery, etc.).

Aims of the placement:

Initially, the trainee will be asked to study the learning and training needs of dental surgery students, in particular through questionnaires carried out with dental surgeons. This study will be supplemented by bibliographical research and technological monitoring relating to dental training.

The second stage will involve the implementation of the training environment, which is divided into two essential stages:

– First stage: The first stage will involve setting up a virtual environment (digital twin) consisting of a digital model of a patient (head and torso) and the upper and lower dental arches. These digital models will be acquired commercially, then modified and adapted to allow jaw opening and closing movements. A digital model of a typical dental drill will be added to the virtual environment.

– Second stage: The second stage will be devoted to coupling the digital twin with a haptic feedback robotic arm of the Haption type (https://www.haption.com/), which will be equipped with a dummy dental drill. This will be followed by the development and implementation of control laws (position, impedance) for the haptic arm. The clinical objective is to restore milling forces to the dental surgeon via the haptic arm. The control strategies will be evaluated in the context of the surgical procedure (milling, extraction or other).

Profile required :

– Robotics/automatics, digital modelling and virtual reality

– Advanced programming skills (C++, Python), ROS2

– Knowledge of 3D design tools (Blender, SolidWorks or equivalent)

– Strong interest in interdisciplinary research and a spirit of collaboration

Additional information:

– Supervisors : Philippe Gauthier, Aline Boudry, Samuel Hadjes and Brahim Tamadazte

– Starting date: May / June 2025

– Length of placement: 6 months

– Level of studies required: Master 2 / Engineer

– Host laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Contact person:

– Aline Boudry: aline.baudry@isir.upmc.fr

– Brahim Tamadazte: brahim.tamadazte@cnrs.fr

– How to apply: send your application by email, with [Internship] in the subject line, a CV, a covering letter and M1 and M2 transcripts (or equivalent).

Subject: Design of a Haptic Teleoperation Interface for Dexterous Robotic Hand

Abstract:

Robust grasping and manipulation with dexterous robotic hands remains a significant challenge in modern robotics. Recent approaches leveraging data-driven methods demonstrate considerable potential for enabling robots to acquire such complex skills. These data-driven approaches depend critically on the availability of high-quality human demonstrations to train effective action models. While multiple teleoperation interfaces have been proposed, most rely solely on vision, neglecting the importance of haptic feedback to the human expert demonstrator. Studies increasingly show that haptic feedback is essential for generating high- quality demonstrations, which are crucial for effective robot learning in manipulation tasks.

Internship Objectives:

Design a mechanical teleoperation interface for the Allegro robotic hand, functioning as an exoskeleton with bidirectional interaction. The device will allow the operator to precisely control the robot while receiving haptic force feedback. The work will first involve mechanical development (design and prototyping), followed by validation and implementation of the controller under ROS (C++/Python), to enhance learning from demonstration for dexterous manipulation. The robotic hand we wish to teleoperate is entirely covered with tactile sensors, able to estimate the interaction forces between the robot and the manipulated object. We hope that the development of this teleoperation interface with haptic feedback for a tactile equipped dexterous hand and the collection of a first visio-tactile dataset will result in a potential scientific publication.

Required Profile:

Master’s degree in engineering.

Required skills :

Mechanical Design, CAD software (SolidWorks/Fusion 360/OnShape etc.), Rapid prototyping (3D printing, laser cutting…), robot programming (Python, C++, ROS).

Additional information:

– Supervisors: Elie Chelly, Mahdi Khoramshahi, Faïz Ben Amar

– Starting date of internship: May / June 2025

– Duration of internship: 6 months

– Level of studies required: Master 2

– Host laboratory: ISIR (Institut des Systèmes Intelligents et de Robotique), Campus Pierre et Marie Curie, 4 place Jussieu, 75005 Paris.

Contact person : 

– Elie Chelly

– Email : chelly@isir.upmc.fr

– Send your application by email, with [Internship] in the subject line, a CV and a covering letter.

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