How to perceive one's environment?

Two main techniques are used to enable the restitution of a digital environment: The use of a camera allows to obtain color information according to the camera plan. The use of Lidar makes it possible to sample an environment by providing the position of the points of the environment in relation to the sensor. Hybrid sensors today make it possible to obtain both visual information and distance (depth) information to benefit from the advantages of each technique in terms of accuracy and repeatability, ease of processing and material costs. The arrival of the 3D TOF sensor on a recent smartphone is a testament to the capabilities of this technology. From the information extracted from these sensors, combined with other proprio or exteroceptive sensors, the environment is generally restituted as a cloud of points in a 3D space. Why perceive your environment? The current calculation capacities allow them to visualize and update in real time this 3D space on graphic engines which then allow an interaction by the user (measurement of a distance or a surface of the environment, set point of displacement in the environment…) or a direct use of the robot. Indeed, the model of the environment thus constructed allows the robot to define optimal paths of passage without colliding with the environment. It also allows the definition of mapping techniques according to the complexity of the environment and according to measured quantities, for example to dynamically tighten a measurement mesh in order to remove any doubt and achieve the precision objectives. The perception of the environment is therefore a major asset to assist the user in the use of a remote robot or to make a robot fully autonomous in a complex environment. The perception of different robots working together then makes it possible to perform more tasks...

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