Abstract: A method is provided for validating annotations of objects. Spatial datapoints acquired by a sensor and annotation data are received. The annotation data is associated with the acquired spatial data points and includes an identification of each respective object. Via a processing unit, the annotations of the objects are validated by performing the steps of: determining a target range for at least one property of the objects, determining, from the acquired spatial datapoints and/or from the annotation data, a respective value of the at least one property for each respective object, and for each object, identifying the object as an erroneous object if the respective value of the at least one property is outside the target range for the at least one property. The erroneous object is selected for review regarding erroneous annotation.

Abstract: A rotary hydraulic device of the displacement pump type having coaxial rotor and stator and vanes axially slidable in the rotor, the stator comprising at least one bottom surface formed with a variable number of deformations having rectilinear zones suitable for the operation on the recesses by the vanes. The recesses are made in movable elements of the stator such that the depth of the recesses can be made variable thus providing a device of variable capacity. The device is applicable to brakes and dampeners, as well as to engines and pumps.

Abstract: The invention relates to a rotary electrohydraulic device of the volumetrical pump type having stator and rotor as well as vanes axially slidable in said rotor. According to the invention, the intermediary space between the rotor and the stator has an axial longitudinal circulary variable interval partly defined by a continuous stator bottom surface of a constant width, said slidable vanes coming to bear constantly and totally on said continuous bottom surface, which is single for a considered set of said vanes. The device according to the invention is mainly applicable as a brake or slackening means but can also work as a motor and a pump.