PhD proposal

Augmented reality to optimize industrial production line


Augmented Reality head-up display technology presents strong potential to assist manufacturing and control processes in industry. In this context, an industrial partner has initiated a collaboration with the Institute Mines-Télécom to identify the appropriate AR technologies (both soft and hardware), contents options, training and user instructions to avoid visual troubles and fatigue.

Applications are thus invited for a PhD studentship starting in October 2016 to work at Telecom Bretagne (Brest, France) under the direction of Prof. JL. De Bougrenet and Dr Vincent Nourrit and in collaboration with the industrial partner. This position is an opportunity to join a multidisciplinary environment (including the ophthalmology department of Brest’s hospital, INSERM U1101) and to gain experience in several aspects of virtual reality and visual perception. In addition, the successful candidate will have the opportunity to work both in a business and academic environment.

The ideal candidate would combine good programming skills (e.g. Matlab, C#) and experience with gaming engines (e.g. Unity) or 3D programming in general.  Some knowledge in virtual reality is expected and familiarities with visual perception and/or visual optics would be an asset, as would experience with statistical methods. The candidate should be able to demonstrate independence and curiosity and be able to lead the project forward.

Funding Notes: This studentship is available to EU nationals (due to funding criteria) and provides fees and stipend subject to eligibility. Applicants should hold (or be about to obtain) a Master degree in a related area. EU Applicants will need to demonstrate adequate proficiency in English Language skills.

For further details please email Vincent.Nourrit@telecom-bretagne.eu

Telecom Bretagne is one of the top French “grande école” and an international research centre in the fields of engineering and digital technology. The campus is located by the Atlantic ocean and considered as one of the most beautiful in Europe. It offers a wealth of extracurricular activities in a multicultural environment. The cost of living in Brest is well below those of other western European cities.



PhD proposal

Immersive technologies for multiple users sharing complementary data. Application to command and control systems


Technical background:

During his PhD, a former PhD student created a visualization platform allowing several viewers (up to four) to watch on the same screen, different video contents. In its current form, the platform includes two 3D projectors positioned above a metallic screen located on a work table. The image decoding for each viewer is obtained thanks to goggles combining functionalities of both active and passive 3D glasses. The images are calculated by a computer and sent via a graphics card (Quadro type) to projectors that run synchronously. The glasses are synchronized using an IR illuminator.

The set-up is completed by a touchscreen (to endow user interactivity) and a system detecting the location of the users (by geolocation) to ensure they get the proper perspective at any time of the displayed objects. The system management is currently done by combining several programs; some were created in C, others use OpenGL functions. We plan to gather all in a dedicated software capable of generating images of objects (with image processing to correct the ghosting effect) and manage both the touchscreen and the geolocation system.

Research objective of the PhD :

The main objective of the PhD deals with the study of technological improvements of the previous platform and to apply it to command and control type systems for submarine application, in collaboration with the School for Sub-Marine Navigation (Brest) and DCNS (Mourillon). Specifically, the student will assess new channel encoding options (for example spectral and temporal, spectral-polarization or spectral-temporal-polarization) anticipating and integrating future developments in display technologies (laser projectors and high frame rate TV). Measurements will be performed according to each visualization modes direct (flat screens) or indirect (projection). Specifically, the student will assess the impact of the coding mode on the quality of the visual and radiometric restitution. The optical quality will be assessed through physical measurement of crosstalk levels to identify configurations capable of providing the best possible channel separation and for all directions for the concerned application, to ensure a visual comfort and a complete freedom of movement for the users working on the table. In parallel, we will focus on the detection issues of the user positions, as well as the identification of some of their gestures.

Location: Optics Department, Ecole de Navigation Sous-Marine de Brest. The PhD work is a part of a research contract DGA-RAPID (TANACO).

PhD supervisor : Prof. J-L de Bougrenet de la Tocnaye

PhD co-supervisor : Dr. Daniel Stoenescu - Tel. 33229001401 - daniel.stoenescu@telecom-bretagne.eu

Beginning : 1st octobre 2016






Position filled


Design, assembly, optimisation and test of diffractive
optical element based laser illuminators for
automatic face recognition.



In the framework of the recently awarded French National Research project, LIVEFACE, the optics department of Telecom Bretagne is looking for candidates for a PhD in the field of photonics. The aim of the LIVEFACE project is to develop novel biometric identification systems to be included in mobile devices (tablets, smartphones). Biometric identification combines practicality and simplicity for users with a high level of security level compared to ID document (passport, identity card) based verification and as a result is currently the subject of intensive research and development, at both the academic and industrial level. The project aims to combine the high quality image sensors and processing   power   of   modern   smartphones   with   active,   structured  and   smart  illumination   to overcome luring techniques (for example presenting printed photos rather than real faces). The role of   Telecom   Bretagne   in   the   project   is   to   design,   assemble,   optimise   and   test   the   structured illumination module based on the use of Diffractive Optical Elements (DOEs).

DOEs   are  versatile  optical   devices   containing   computer   designed   micro-   and   nano-structures capable of diffracting a laser beam into almost any desired light pattern. They are increasingly being used for an ever widening range of photonics applications: laser beam shaping, high-speed optical communications, energy efficient LED lighting, photovoltaics, etc. Telecom Bretagne has over 15 years of experience in this field and, thanks to several European projects, now possesses extremely
high performance facilities (dedicated cleanrooms and photoplotters) for DOE fabrication   and replication. So far however, these devices have generally been used with relatively high beam
quality lasers, small diffraction angles and without strong cost constraints. The application targeted here will require a highly compact module (cm 3  to mm 3 ), the use of cheaper, poorer beam quality lasers, allowance for extremely strong cost constraints (a few euros maximum for the complete module in mass production) and diffraction angles at the limit or beyond current DOE design and fabrication capacities. In addition to the opto-mechanical modelling, design and assembly of the illumination module, the work of the PhD will thus necessarily involve the improvement and extension of DOE design algorithms (both commercial and in-house DOE design software are available at Telecom Bretagne) and of fabrication facilities to take them beyond the current state of the art in the field.  At the same time the research must be conducted in very close collaboration with the industrial lead partner Morpho-Safran (frequent trips to their facilities in Paris) to optimise the DOE design and illumination module’s overall practical performance to the requirements of their face recognition algorithms and industrial production constraints.

Full advantage will be taken of Telecom Bretagne DOE fabrication facilities to perform numerous
(1)  theoretical model →  (2)  simulation →  (3)  fabrication →  (4)  experimental evaluation design cycles to optimise module performance and cost. The successful candidate will be expected to learn to design, fabricate (cleanroom), integrate and test their own DOEs during the PhD. Other industrial applications requiring structured illumination with low-cost modules, particularly those with large diffraction angles will also be addressed during the thesis.

Objectives :
−Design, assemble, and optimise a highly compact module for the structured illumination of human faces for a biometric identification system.
−Develop and improve DOE design algorithms for large diffraction angles (beyond the scalar diffraction regime) and for use with low-beam quality semiconductor lasers
−Develop and improve DOE fabrication facilities to enable the fabrication of high diffraction angle nano-structures (vs current micro-structures) and “deep” structures – thicker than the illuminating light wavelength.
−Adapt   and   optimise   the   DOE   and   illumination   module   design   and   fabrication   to   mass production
−Apply and adapt the algorithms, fabrication facilities and know-how developed to related application fields
−Protection of Intellectual Property for the developed algorithms and procedures, technological transfer to industrial partners, international publications.

Candidate profile:
− Solid grounding in Physics/Optics/Photonics (Masters level degree in related field)
− Experience of computer modelling (C/C++, Matlab or similar) of physical processes and optimisation techniques,
− Taste   and   aptitude   for   real-life   practical   applications   (fabrication)   and   laboratory experimentation.
− Ability to work and write reports in English. French an advantage.

Three year contract with Telecom Bretagne, with possible start on Dec. 1 st , 2015
The thesis will take place in Telecom Bretagne in Brest on the Atlantic coast of France

Département Optique, Telecom Bretagne, www.telecom-bretagne.eu.
bruno.fracasso@telecom-bretagne.eu     Tel +33 2 2900 1420
kevin.heggarty@telecom-bretagne.eu     Tel +33 2 2900 1205
The Télécom Bretagne Campus – GPS N 48.3597° - W 04.5705°






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