Master's project, R&D

Completed

Internship / Student

Canada - Levis

Available now

We are looking for the perfect candidate for a master's project on the development of a digital platform to calibrate, optimize and evaluate the lens of a computer vision system.

What a typical day with us looks like:

Context: Creaform develops metrological grade optical scanners that allow the precise determination of the 3D profile of a surface thanks to a precise calibration of the intrinsic and extrinsic parameters of the camera. This makes it possible to reach a level of accuracy of a few tens of microns during a scan, which is essential in the field of automotive and aeronautic component inspection. 3D reconstruction algorithms are generally based on the pinhole camera model used at a great distance from the object of interest. This is an important approximation to the behavior of a real lens used at short distance as it is the case in our scanners. Since we are constantly seeking to improve the accuracy of our scanners, these approximations are now becoming a limiting factor for future products. Chromatic and monochromatic aberrations, which are not taken into account in the pinhole camera model, limit the quality of the 3D reconstruction. At the chromatic level, a shift between the wavelength used during calibration and that used during measurement causes a systematic error. Monochromatic aberrations, such as coma, spherical aberration and astigmatism, cause a deformation of the centroid used in the calculation of 3D coordinates. The calibration algorithm is therefore never able to reproduce the position of the observations predicted by the model. The camera lenses available on the market are generally optimized to produce a good image quality. This project rather aims at designing a new type of lens optimized to produce a good measurement quality. The candidate will therefore aim to improve the accuracy of the 3D reconstructions produced by our scanners and explore the possibilities of the Zemax optical design software to develop a platform to calibrate and optimize a lens based on a merit function based on the camera calibration algorithm. This platform will then be used to design a simple camera lens to improve the accuracy of the 3D reconstruction.

Our perfect match...

  • Is student in engineering physics, electrical engineering or physics ;
  • Has interest in engineering, optical design ;
  • Has strong problem solving and analytical skills;
  • Is autonomous and resourceful.

In exchange we offer you...

  • A very interesting scholarship for your master's project;
  • Flexible work schedule because we have your family at heart;
  • Competitive salary and benefits;
  • Vibrant, ambitious, stimulating and worldwide company;
  • Gym available for the employees;
  • A solid and unique work team;
  • The possibility to progress with a variety of projects;
  • Social activities, and much more!