Abstract: A method of acquiring images includes moving, into a plurality of acquisition locations, of an acquisition device including at least one camera, and acquisition at each acquisition location of at least one image of a scene by the camera. Each acquisition location being chosen in such a manner that scenes viewed by the camera at two consecutive acquisition locations and corresponding images overlap, at least partially, and areal density of pixels assigned to at least one element of the corresponding scene, which is represented in the corresponding image by a high-resolution portion, is greater than 50% or greater than 80% of a target areal density, the areal density of pixels being defined as a ratio of the area of the element projected in a plane perpendicular to an optical axis of the camera over a quantity of pixels of the high-resolution portion.

Abstract: A system for surveying a surface (2) to measure a physical or chemical property associated with the surface. The system includes a handheld probe (4) measuring a physical or chemical property at locations over a surface (2). The video camera (12) captures video data of a user (6) using the handheld probe (4) to survey the surface. The depth sensing device (14) measures the distance to the handheld probe (4). Processing circuitry identifies the handheld probe from the video data and determines the position of the handheld probe (4) relative to the surface (2). A data recorder and/or a data transmitter records and/or transmits data representative of the physical or chemical property measured by the handheld probe (4) and data representative of the associated position of the handheld probe, when the handheld probe (4) is determined to be less than a threshold distance from the surface (2) being surveyed.

Abstract: A repair method for a civil engineering work. The method includes the depositing, directly onto a portion of the work to be repaired, of a reinforcing structure formed from one or more successive layers of at least one reinforcing material which are each extruded in contact with the surface onto which the material is to be deposited, using a robot system, with the material being extruded in strips.

Abstract: A system for holding a tubular sleeve (2) in a receiving structure during setting of a cement or other binder introduced in a fluid state between the sleeve (2) and the receiving structure, comprising:—at least one expandable structure (4) mounted on the sleeve (2), deformable from an inactive configuration allowing insertion of the sleeve (2) in the receiving structure to an active configuration immobilizing the sleeve (2) in the receiving structure,—at least one corresponding tool to be inserted in the sleeve (2), configured for acting on the expandable structure (4) to cause it to pass from the inactive configuration to the active configuration.

Abstract: The disclosure relates to a method for compacting a soil, wherein: a) a ramming cycle is carried out several times on an impact area of the soil during which: a mass (16) is dropped on the impact area from a predetermined height (A); and after the impact of the mass (16) on the impact area, a point cloud is acquired using a laser scanner in order to obtain a radar image of at least the footprint (E) of the mass in the soil; b) at least one characteristic data of the soil compaction is determined from at least one of the radar images obtained at the end of the ramming cycles.

Abstract: The disclosure relates to a system for drilling a vertical well in soil according to a substantially vertical theoretical drilling trajectory comprising a drilling device including a hollow core having a longitudinal axis, the hollow core being provided with a drilling tool; a rotating driving device exhibiting an active state in which the driving device is oriented with respect to the soil in an angular correction position, and a passive state in which the driving device does not modify the displacement trajectory of the drilling device; a device for measuring the deviation of the hollow core; a control device configured to make the driving device swivel when a deviation is measured, in order to bring it in its active state in an angular correction position determined such that, considered in the horizontal plane, the trajectory correcting direction associated with the angular correction position is opposite to the deviation direction.

Abstract: A data processing system (10) for compressing gamma spectroscopy data includes a data input (18) for receiving data representing counts for each of a plurality of bins. The counts represent a set of binned gamma spectroscopy data. The data processing system (10) also includes a processor (20). The processor (20) is arranged to: read the counts in each bin; calculate a measure representative of the counts using the counts in one or more of the bins; choose, using the measure, which one of at least two compression schemes to use to compress the data representing the counts; and compress the data representing the counts according to the chosen compression scheme; and write the compressed data representing the counts to a data storage device (22).

Abstract: The invention relates to a method of drilling ground along a drilling direction, the method comprising: providing at least first and second drill tubes (40, 42); providing an articulated and motorized manipulator arm (12) having a gripper member (30); using the gripper member (30) to take hold of the first drill tube (40); moving the gripper member in the drilling direction so as to drive the first drill tube into the ground, the gripper member releasing the first drill tube; then taking hold of the second drill tube and fastening the second drill tube to the first drill tube; and moving the gripper member so as to drive the first and second drill tubes into the ground.

Abstract: The damping device comprises: a base comprising a through-orifice for receiving said cable, said through-orifice extending along at least a longitudinal axis, and at least one cylinder connected to said base and inclined with respect to said longitudinal axis at an angle other than 90°, and, for said cylinder, a complementary cylinder connected to said base and inclined with respect to said longitudinal axis at an angle other than 90°, the cylinder and the complementary cylinder being arranged on either side of a plane orthogonal to the longitudinal axis, the orthogonal plane containing a centre of the base, said centre being situated along the longitudinal axis.

Abstract: A drilling machine (10) for making an excavation in ground (S) in a vertical drilling direction (F). The drilling machine (10) includes: a support (12) having a longitudinal direction (L); a drilling module (14) provided with cutter members (16), the drilling module being movable in translation relative to the support; and a movement device arranged between the support and the drilling module in order to move the drilling module (14) relative to the support along the longitudinal direction of the support. The machine is characterized by the fact that the movement device includes a damper (70) for damping the vibration generated by the drilling module while drilling.

Abstract: The invention relates to a method for detecting defects of at least one metal wire of a set of metal wires, in particular in a cable, the method including: a step of emitting a high-frequency ultrasound signal around a so-called specific frequency in the metal wire; a step of reflecting said ultrasound signal in the metal wire; and a step of receiving the reflected ultrasound signal. The emitted ultrasound signal enables the energisation of at least one high-frequency wave capable of propagating in a longitudinal direction of the metal wire and having a phase velocity that is slightly higher than a compression volume wave velocity in the metal from which the metal wire is made.

Abstract: The invention relates to a machine for putting a drain into place in ground, the machine comprising a drive tube presenting a longitudinal axis and having a bottom end; a movement device for moving the drive tube in a direction parallel to the longitudinal axis; a drain extending inside the drive tube and having a bottom end extending outside the drive tube; at least one anchor; a fastener device (70) for fastening the anchor to the drain; and a cutter member for cutting the drain (18) and arranged under the fastener device. The machine of the invention further comprises a cutter device (60) for cutting the anchor from a strip (54).

Abstract: A drilling machine for drilling ground in a vertical direction, the machine including: an anchor module having front and rear faces, the anchor module including an anchor device having front and rear anchor pads that are deployable in a deployment direction, to bear against walls of the excavation to hold the anchor module stationary in the ground. The anchor module further includes: a frame carrying the front and rear anchor pads, the frame supporting the drilling module; and an actuator device to which the front and rear anchor pads are fastened, the actuator device being movable relative to the frame in a movement direction that extends transversely to the longitudinal direction; whereby the assembly constituted by the front anchor pad, the rear anchor pad, and the actuator device is movable in the movement direction relative to the frame and the drilling module.

Abstract: The invention relates to a retaining work (12) in ground (S), the work having a vertical front portion and separating a first portion of ground (S1) from a second portion of ground. The front portion (14) is in the form of juxtaposed arched walls (16), each arched wall (16) presenting a concave side facing the first portion of ground and a convex side facing the second portion of ground, and the retaining work (12) further includes a rear portion (20) comprising a plurality of wall elements (22) having their largest faces extending vertically in the second portion of ground (S2), each wall element (22) being arranged between two adjacent arched walls (16) and extending transversely relative to the front portion (14).

Abstract: A drilling machine (10) for making an excavation in ground in a drilling direction that is substantially vertical, the drilling machine including: an anchor module (22) having at least one anchor element for preventing the anchor module from moving relative to the walls of the excavation in the drilling direction, the anchor module having a longitudinal direction that is substantially vertical; a drilling module (12) provided with cutter members, the drilling module being movable in translation relative to the anchor module in the drilling direction; and a movement device (50) arranged between the anchor module and the drilling module in order to move the drilling module in translation relative to the anchor module in the drilling direction. The machine is suspended from a lift cable (70) that is fastened to the drilling module (12).

Abstract: A reinforcement apparatus for reinforcing a structure comprising at least one pier bearing on foundations, a cross-beam bearing on said pier and at least one structure element located above the cross-beam, the reinforcement apparatus comprising at least one column (20) destined to surround the pier at least partly, to be mechanically coupled to the pier and to bear on said foundations, and at least one transverse beam (22) fixed relative to the column and destined to be mechanically coupled to the cross-beam, and at least one load transfer element (36) arranged on an upper face of said at least one transverse beam (22) to take up at least part of the load of the structure element.

Abstract: Method for producing a ballast weight for damping vibrations of a structure, the ballast weight being formed from ballast components comprising a part of a ballast cable, the method comprising: connecting the ballast cable to a conveying device, by the conveying device, moving successive portions of the ballast cable from a low point to a high point, and forming the ballast weight from a part of the successive portions of the ballast cable which have been conveyed to the high point.

Abstract: A method of acquiring images includes moving, into a plurality of acquisition locations, of an acquisition device including at least one camera, and acquisition at each acquisition location of at least one image of a scene by the camera. Each acquisition location being chosen in such a manner that scenes viewed by the camera at two consecutive acquisition locations and corresponding images overlap, at least partially, and areal density of pixels assigned to at least one element of the corresponding scene, which is represented in the corresponding image by a high-resolution portion, is greater than 50% or greater than 80% of a target areal density, the areal density of pixels being defined as a ratio of the area of the element projected in a plane perpendicular to an optical axis of the camera over a quantity of pixels of the high-resolution portion.

Abstract: Computer storage means (11) on which is stored at least one 3D digital model of at least one object, this model comprising a set of voxels modeling this object and metadata associated with the voxels, comprising at least one item of information on the accuracy with which all or part of these voxels are referenced spatially

Abstract: Method for texturing a 3D model of at least one scene (5), comprising: a) the meshing with surface elements (50; 55) of a point cloud (45) representing the scene, so as to generate the 3D model, each surface element representing an area of the scene, b) the unfolding of the 3D model for obtaining a 2D model formed of a plane mesh (60a; 60b) formed of polygons (65), each surface element corresponding to a single polygon, and vice versa, and c) for at least one, preferably all the surface elements, iv) the identification, from an image bank (40a; 40b), of the images representing the area of the scene and which have been acquired by a camera the image plane (72a-b) of which has a normal direction, in the corresponding acquisition position, forming an angle (?a-b) less than 10°, preferably less than 5°, better less than 3° with a direction normal (70) to the face of the surface element, v) the selection of an image (40a-b) from the identified images, and, vi) the association of a texture property with a corresp