Partner: CEA, France
Advanced Technology: Sigma Fusion (A low-power sensor fusion solution for safe autonomous driving)
Contact: Marie-Sophie Masselot
Telephone: +33 438 783 830


SIGMA FUSION is the core of an autonomous car’s brain! It processes information signalled by its senses: a stereo camera and two Lidars. SIGMA FUSION transforms the myriad of incoming distance data into clear information on the driving environment. This anonymous detection system combines, merges and feeds exhaustive data to an autonomous car’s autopilot, providing all it needs to guarantee safe driving.

SIGMA FUSION embraces:

  • Mutli-sensor fusion supporting a wide range of sensor technologies
  • Safe assessment of the free space surrounding the vehicle
  • Low cost, low power and easy on board integration
  • Real-time performance in a mass-market microcontroller
  • Fast, accurate environmental perception
  • Predictable behaviour and proven reliability to meet automotive certification process


  • Automotive and smart transportation
  • Autonomous driving systems
  • Certifiable perception
  • Drone navigation and obstacle avoidance
  • Highly assisted mass transportation
  • Consumers and industry
  • Obstacle avoidance for drones
  • Embedded safeguard systems for smart factories
  • Travel aid for rescuers and visually impaired people

What’s new?

  • Sigma fusion can be embedded on already certified ASIL-D automotive platform
  • Compatible with any kind of sensors (unlike its competitors): receives data from the best sensors for the relevant application, which are simply mounted in combination
  • Consumes less than 1 watt, making it 100 times more efficient than comparable systems
  • Ultra-compact and miniaturized solution: fits into a tiny mass-market microcontroller
  • Affordable and tailored to every vehicle type and model
  • Seamless integration: integrates existing car and other industry production lines

What’s next?

Leti will continue to develop SIGMA FUSION by integrating state-of-the-art sensor technologies including Lidar, Radar, Vision, Ultrasound and Time-of- Flight camera into the system. Opportunities will be exploited to transform proof of concept into certified engineering platforms in automotive and other industries.

On the not-so-distant horizon, SIGMA FUSION’s potential will drive development of innovative sensor architectures in optics, radar, ultrasound and other technologies. Conversely, SIGMA FUSION will be enhanced through integration of infrastructural information (Fusion V2X)


  • 53rd Design Automation Conference (DAC 2016)
  • IEEE International Conference on Robotics and Automation (ICRA 2016)
  • 2 patents

Video overview

For more information

Contact : Marie-Sophie Masselot
Email :
Tel : +33 438 783 830