Abstract: A computer-implemented method for switching from a first 3D view of a 3D scene to a second 3D view of the 3D scene including obtaining the first 3D view displayed from a plane of a locked viewpoint of the 3D scene, detecting a continuous user interaction including a slide a first and second location on the plane. The method further comprises computing a distance traveled by the slide, comparing the computed distance with a predetermined distance, and if the computed distance is greater than the predetermined distance, a switch from the first 3D view to the second 3D view is performed.

Abstract: A computer-implemented method of 3D reconstruction of at least one real object comprising an assembly of parts. The 3D reconstruction method includes obtaining a neural network configured for generating a 3D primitive CAD object based on an input depth image, obtaining a natural image and a depth image representing the real object, segmenting the depth image based at least on the natural image, each segment representing at most a respective part of the assembly, and applying the neural network to each segment.

Abstract: A computer-implemented method for 3D reconstruction including obtaining 2D images and, for each 2D image, camera parameters which define a perspective projection. The 2D images all represent a same real object. The real object is fixed. The method also includes obtaining, for each 2D image, a smooth map. The smooth map has pixel values, and each pixel value represents a measurement of contour presence. The method also includes determining a 3D modeled object that represents the real object. The determining iteratively optimizes energy. The energy rewards, for each smooth map, projections of silhouette vertices of the 3D modeled object having pixel values representing a high measurement of contour presence. This forms an improved solution for 3D reconstruction.

Abstract: A computer-implemented method for designing a manufacturing product. The method includes obtaining a CAD model representing the manufacturing product. The CAD model includes a feature tree. The feature tree has one or more CAD parameters each having an initial value. The method also includes obtaining an optimization program. The optimization program is specified by one or more use and/or manufacturing performance indicators. The one or more indicators having one or more objective functions and/or one or more constraints. The method further includes modifying the initial values of the one or more CAD parameters by solving the optimization program using a gradient-based optimization method. The optimization method has as free variable the one or more CAD parameters and uses sensitivities. Each sensitivity is an approximation of a respective derivative of a respective performance indicator with respect to a respective CAD parameter.

Abstract: Grasping remains a complex topic for simulation. Embodiments provide a method to automatically determine grasping cues for tools. An example embodiment scans a CAD model representing a real-world tool to generate a series of sections from the CAD model. In turn, properties of each section are extracted and one or more regions of the CAD model are identified based upon the extracted properties and a tool family to which the tool represented by the CAD model belongs. To continue, a respective classification for each of the one or more identified regions is identified and grasping cues for the CAD model are generated based upon the determined respective classification for each of the one or more regions.

Abstract: A 3D reconstruction method including obtaining a first open triangulated surface consisting of triangles of a tetrahedral meshing of a point cloud and determining a second open triangulated surface. The determining explores candidate open triangulated surfaces each being a set of triangles of the meshing and penalizes a high rank of the candidates according to a lexicographic order based on a triangle order and ordering a candidate having triangles decreasingly ordered according to a triangle order penalizing triangle size, relative to another candidate having triangles decreasingly ordered according to the triangle order. The second surface violates consistency of a labelling of the meshing with two labels. A triangle respects labelling consistency when it belongs to the first surface and separates two tetrahedrons having different labels, or when it does not belong to the first surface and separates two tetrahedrons having a same label.

Abstract: A computer-implemented method for sketch-processing. The method including obtaining one or more input sketches and determining one or more output sketches from the one or more input sketches. Each output sketch is closed and manifold. The determining of the one or more output sketches includes constructing a set of manifold sketches including each manifold input sketch. The constructing of the set of manifold sketches includes, for each respective non-manifold input sketch, determining two or more respective manifold sketches based on at least one intra-sketch intersection of the respective non-manifold input sketch. The determining of the one or more output sketches includes combining each pair of manifold sketches of the constructed set that share at least two intersections, to form one or more closed and manifold sketches. The method forms an improved solution for sketch-processing.

Abstract: Computer implemented techniques for simulating a fluid flow about a surface of a solid, include receiving a coordinate system for representation of a curvilinear mesh that conforms to the surface of the solid, simulating, with a lattice velocity set transport of particles in a volume of fluid, with the transport causing collision among the particles, executing a distribution function for transport of the particles, with the distribution function including a particle collision determination and a change in particle distribution associated with the curvilinear mesh, performing by the computing system, advection operations in the coordinate system under constraints applied to particle momentum values and mapping by the computer system values resulting from simulating onto the curvilinear mesh by translation of the particle momentum values and spatial coordinates determined in the coordinate system into momentum and spatial values in the curvilinear space.

Abstract: A computer-implemented method of signal processing comprises providing images. The method comprises for each respective one of at least a subset of the images: applying a weakly-supervised learnt function, the weakly-supervised learnt function outputting respective couples each including a respective localization and one or more respective confidence scores, each confidence score representing a probability of instantiation of a respective object category at the respective localization. The method further comprises determining, based on the output of the weakly-supervised learnt function, one or more respective annotations, each annotation including a respective localization and a respective label representing instantiation a respective object category at the respective localization. The method further comprises forming a dataset including pieces of data, each piece of data including a respective image of the subset and at least a part of the one or more annotations determined for the respective image.

Abstract: The disclosure relates to a computer-implemented method for tessellation processing. The tessellation forms a surface representation of a real-world 3D object. The method comprises providing a constrained tetrahedral Delaunay mesh comprising the tessellation. The mesh is conformal and comprises one or more sets of tetrahedrons, each set representing a gap between portions of the tessellation, each gap having a size lower than a predefined threshold. The method further comprises determining a set of one or more tetrahedra faces of the mesh to be added to the tessellation, includes minimizing an objective function that includes a term penalizing surface creation by face addition to the tessellation. The minimization is under the constraint that a given set of tetrahedra faces of the Delaunay mesh is to be added to the tessellation. The given set of tetrahedra faces includes, for each gap of one or more gaps, the tetrahedra faces meshing the gap.

Abstract: A method is disclosed for creating a flattened version of a three-dimensional electrical harness assembly design in a computer-aided design environment. The method includes storing data in computer memory including route segment identifiers, diameters, lengths, and end points for route segments in the electrical harness assembly. A computer processor designates route segments as forming a trunk line of the electrical harness assembly, based on the stored data, and produces a flattened two-dimensional version of the design. All the route segments designated as forming the trunk line are represented in the flattened 2D version by straight connected lines, having a particular orientation (e.g., horizontal), and every other route segment is represented as extending out from the trunk line. The flattened 2D version is displayed on a display screen of a computer.

Abstract: A computer-implemented method for designing a mechanical product formed in one or more materials including obtaining inputs including a finite element model representing the mechanical product and having an initial value of design variables, one or more load cases, a corresponding load history for each load case, boundary conditions, fatigue properties of the one or more materials, and a fatigue calculation scheme. The method further includes computing a distribution of fatigue damage over the finite element model based on the inputs, computing a distribution of sets of fatigue damage sensitivities over the finite element model based on the computed distribution of fatigue damage, each fatigue damage sensitivity of each set approximating a derivative of the fatigue damage relative to a respective design variable, and updating the value of the design variables based on the fatigue damage sensitivities.

Abstract: A computer-implemented method for classifying three-dimensional (3D) objects including obtaining a set of 3D objects. Each 3D object of the set has a signature representative of the morphology of the 3D object. The method also includes computing a multi-level clustering of the set of 3D objects. The multi-level clustering is a hierarchical tree structure of clusters of 3D objects of the set and has N hierarchical levels. The method also includes selecting, automatically or upon user interaction, one of the computed clusters of a level of the multi-level clustering thereby defining a current level. The method comprises displaying, to a user, 3D objects of the selected cluster in a first part of a display. The method further includes classifying, upon user interaction, the displayed 3D objects. The computer-implemented method improves the classification of 3D objects.

Abstract: A computer-implemented method for generating a color of an object displayed on a GUI. The method includes displaying on a graphical user interface a set of icons, each icon of the set being associated with a color, detecting a first user interaction on a first icon of the set, detecting a second user interaction that comprises at least a slide, modifying a value of a parameter of a first color associated with the first icon, the modification of the value being performed with the second user interaction, and computing a first new color that is the first color with the modified value of a parameter.

Abstract: Techniques including methods, apparatus and computer program products are disclosed. These techniques include computer instructions that are encoded on computer storage media for determining wettability. The techniques use a numerical aging computation process to provide a representation of a wettability alteration of a physical rock sample in the presence of at least two fluids is disclosed. The techniques include retrieving a representation of a physical rock sample, the representation including pore space and grain space data corresponding to the physical rock sample, calculating local curvature for each surface in the pore space, determining from the calculated local curvature whether water-film breakage will occur, and classifying the wettability of the physical rock based on the determination of water-film breakage.

Abstract: A computer-implemented method for designing a product to be manufactured. The method includes obtaining a first subpart and a second subpart of the product. Each subpart is represented by a semantic representation having one or more semantic nodes. Each semantic representation has, for each semantic node of the semantic representation, a respective procedural graph and a respective semantic description of the semantic node. The respective semantic description comprises at least one semantic publication and at least one reference. The method includes assembling the first subpart with the second subpart by pointing one or more semantic references of the first subpart each to a respective semantic publication of the second subpart. The method comprises executing the procedural graphs of the semantic representations of the first and second subparts according to the pointed one or more semantic references. The method improves the designing of the product.

Abstract: A computer-implemented method for training a neural network for inferring a gene expression profile.

Abstract: A computer-implemented method for generating by a query engine a graph of operators for a SPARQL query over an RDF graph. The method includes obtaining a graph of operators executable by the query engine, the graph comprising a plurality of basic operators, at least two of said operators being of a first type each configured to find RDF triples of the RDF graph that match a respective basic graph pattern. The method further comprises identifying a group of operators among the at least two basic operators of the graph which are of the first type. The respective basic graph patterns of the group of operators have same subject and/or predicate and/or object and the identified group of operators is replaced in the graph by an equivalent operator configured to find RDF triples of the RDF graph that match the respective basic graph patterns of the group of operators.

Abstract: A computer-implemented method for setting a typed parameter of a typed operation applied to a 3D modeled object in a 3D scene. The method comprises displaying a representation of the 3D modeled object in the 3D scene. The method comprises obtaining the typed operation to be applied on a point of interest of the displayed representation of the 3D modeled object and selecting a first typed parameter among at least two typed parameters, thereby defining the selected first typed parameter as a current selected typed parameter. The method comprises providing a 2D manipulator in the 3D scene for setting the current selected typed parameter and setting the current selected typed parameter upon user interaction with at least one logical area of the 2D manipulator associated with the current selected typed parameters. The method improves the setting of a typed parameter of a typed operation.

Abstract: A computer-implemented method for duplicating a GUI element in a 3D scene including obtaining a 3D model and GUI element displayed in the 3D scene, the GUI element including an anchor attached to the 3D model and including a body being window containing text and/or graphical elements, receiving a first user interaction indicative of a hold gesture on the anchor, by a user using a first appendage, while maintaining the hold gesture of the first appendage on the anchor, receiving a second user interaction indicative a hold gesture on the body, by the user using a second appendage, while maintaining the hold gesture using the first and second appendage, moving the second appendage outside the body, thereby duplicating the GUI element into a second GUI element, including an anchor, the position of the anchor of the second GUI element being defined by the position of second appendage.