Research engineer in 3D reconstruction and neural rendering
Contract type : Fixed-term contract
Renewable contract : Yes
Level of qualifications required : Graduate degree or equivalent
Fonction : Temporary scientific engineer
Corps d'accueil : Ingénieur de Recherche (IR)
About the research centre or Inria department
The Inria Centre at Rennes University is one of Inria's eight centres and has more than thirty research teams. The Inria Centre is a major and recognized player in the field of digital sciences. It is at the heart of a rich R&D and innovation ecosystem: highly innovative PMEs, large industrial groups, competitiveness clusters, research and higher education players, laboratories of excellence, technological research institute, etc.
Assignment
In recent years, there has been a surge in novel neural shape and radiance representations for reconstructing and modeling 3D scenes and objects within deep learning frameworks. These advancements enable both novel view synthesis and 3D shape recovery from images. The representations span implicit and explicit forms. Implicit representations learn spatially conditioned neural fields, such as volume density in NeRF [1] or signed distance functions in NeuS [2], which are typically trained through differentiable volumetric rendering. The latest explicit representations model the scene as a collection of primitives, like Gaussian splatting, which is trained via splatting-based alpha compositing. Efficient versions of these models rely on CUDA implementations (e.g. Instant-NGP [3], Gaussian Splatting [4]), allowing for faster training and rendering.
Building on our recent efforts in self-supervised 3D reconstruction models (e.g. [5,6]), the goal of this project is to advance existing research by developing CUDA-enabled neural 3D models that can effectively learn both shape and radiance. Key challenges include learning from sparse input images, handling noisy camera poses, and pursuing physically decomposable rendering—i.e., decoupling radiance into illumination and intrinsic material properties.
[1] NeRF: Representing scenes as neural radiance fields for view synthesis. ECCV 2020
[2] Neus: Learning neural implicit surfaces by volume rendering for multi-view reconstruction. NeurIPS 2020
[3] Instant neural graphics primitives with a multiresolution hash encoding. SIGGRAPH 2022
[4] 3D Gaussian Splatting for Real-Time Radiance Field Rendering. SIGGRAPH 2023
[5] Few-Shot Unsupervised Implicit Neural Shape Representation Learning with Spatial Adversaries. ICML 2024
[6] Unsupervised Occupancy Learning from Sparse Point Cloud. CVPR 2024
Main activities
The engineer’s responsibilities will include:
- Examining and benchmarking state-of-the-art methods, including NeRFs, NeuS, and Gaussian Splatting.
- Contributing improvements to these models, focusing on robust learning from sparse images and noisy camera poses, and enhancing geometric reconstruction quality.
- Extending the models to generalize to inverse rendering tasks.
Skills
Candidates should have a M.Sc. or PhD in a computer science related field. A solid background in applied mathematics, computer vision, computer graphics and machines learning, and proficiency in Python and C++ (CUDA) are required.
Benefits package
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- Subsidized meals
- Partial reimbursement of public transport costs
- Possibility of teleworking (90 days per year) and flexible organization of working hours
- Partial payment of insurance costs
Remuneration
Monthly gross salary from 2 695 euros according to diploma and experience
General Information
- Theme/Domain :
Vision, perception and multimedia interpretation
Scientific computing (BAP E) - Town/city : Rennes
- Inria Center : Centre Inria de l'Université de Rennes
- Starting date : 2024-12-01
- Duration of contract : 12 months
- Deadline to apply : 2024-10-31
Warning : you must enter your e-mail address in order to save your application to Inria. Applications must be submitted online on the Inria website. Processing of applications sent from other channels is not guaranteed.
Instruction to apply
Please submit online : your resume, cover letter and letters of recommendation eventually
Defence Security :
This position is likely to be situated in a restricted area (ZRR), as defined in Decree No. 2011-1425 relating to the protection of national scientific and technical potential (PPST).Authorisation to enter an area is granted by the director of the unit, following a favourable Ministerial decision, as defined in the decree of 3 July 2012 relating to the PPST. An unfavourable Ministerial decision in respect of a position situated in a ZRR would result in the cancellation of the appointment.
Recruitment Policy :
As part of its diversity policy, all Inria positions are accessible to people with disabilities.
Contacts
- Inria Team : MIMETIC
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Recruiter :
Boukhayma Adnane / adnane.boukhayma@inria.fr
The keys to success
We are looking for excellent candidates with a strong background in mathematics and computer science, passionate for research and coding, who can work independently and who are also keen to collaborate with other students and researchers.
About Inria
Inria is the French national research institute dedicated to digital science and technology. It employs 2,600 people. Its 200 agile project teams, generally run jointly with academic partners, include more than 3,500 scientists and engineers working to meet the challenges of digital technology, often at the interface with other disciplines. The Institute also employs numerous talents in over forty different professions. 900 research support staff contribute to the preparation and development of scientific and entrepreneurial projects that have a worldwide impact.