12 results about "Geometric form" patented technology

A three-dimensional modeling method may include (a) obtaining a first plurality of encodings of a first plurality of images of an object; (b) generating, by the one or more processors and one or more image-generating models, a second plurality of encodings of a second plurality of images of the object, the second plurality of encodings being based on the first plurality of encodings and on conditioning data; and (c) constructing, by the one or more processors based on the second plurality of encodings, a 3D model of the object, the 3D model indicating (1) a geometric form of the object and (2) a texture and / or material of at least one surface of the object. Steps (a) – (c) of the modeling method may be repeated until the one or more processors determine that the 3D model of the object satisfies one or more criteria.

The invention discloses a random micro-geometric constraint virtual fixture, a dynamic control method and a system, and the random micro-geometric constraint virtual fixture is characterized in that the geometric form of the virtual fixture can be given in an analytical form, and at least two orders are differentiable; under the condition that the geometric form of the constraint only depends on the spatial position, a scalar constraint equation and a constraint control quantity of the virtual fixture are defined, a multi-constraint joint Jacobian matrix is constructed, and reference constraint control input is calculated by adopting PD control based on a constraint control expected value and a constraint control error value. According to the arbitrary micro-geometric constraint virtual fixture dynamic control method, null space control input of a mechanical arm is calculated based on a dynamic model, reference constraint control input is calculated through a virtual fixture, and compensation is carried out after estimated torque is projected to a task space corresponding to virtual fixture constraint through a disturbance observer. According to the virtual fixture, the problems of poor universality and heavy calculation burden are solved, calculation is simplified, and the universality is improved.

The invention belongs to the technical field of artificial intelligence, and relates to a geometric large model training method and device, an application method and device, a medium and electronic equipment. The method comprises the following steps: obtaining a geometric image, wherein the geometric image is obtained by reconstructing a geometric form language; a geometric text is determined according to the geometric image, the geometric image and the geometric text are used for training a geometric large model to obtain a geometric large model meeting preset conditions, the geometric text comprises a geometric problem text and a geometric answer text corresponding to the geometric image, and the geometric large model is used for solving the geometric problem. The computing power in the reconstruction process is reduced, the consistency problem of the vertex annotation and the topological structure of the geometric image and the matching degree problem of the reconstructed image and the combined text are solved, the geometric visual perception ability is improved, the two schemes of topological relation perception and geometric axiom alignment are integrated, and the method has the advantages of being high in practicability and easy to popularize. The generalization ability and the reasoning depth of the geometric large model in geometric reasoning and sensing tasks are optimized, and the calculation efficiency and the calculation accuracy are improved.

The invention relates to the technical field of virtual reality, and particularly discloses a traditional culture scene construction method based on VR, and the method comprises the steps: data collection, feature extraction, multi-modal fusion, scene construction and user interaction. According to the scheme, cross-modal unified spatial expression is constructed for multi-modal data, the semantic fusion capability among cultural elements is enhanced, a multi-modal fusion network is constructed, semantic information, visual information and geometric structures are introduced layer by layer, gradual enhancement of feature aggregation under semantic driving is realized, and semantic consistency and output quality of fusion expression are effectively ensured; based on the fused multi-modal feature vector, the geometric morphology of entities and scene elements corresponding to culture semantics is extracted, the structural integrity and culture expressive power of a scene are effectively improved, and the immersion of a traditional culture scene and the visual reality sense of a user are effectively improved through highly real texture mapping, light and shadow simulation and scene rendering.

The invention discloses a time-varying information decoupling method based on time feature guidance, and aims to solve the problem that the quality of a reconstructed image is poor due to the fact that an existing method cannot suppress negative effects of time-varying shadow information on geometric constraints. Decoupling of time-varying shadow information and time-varying geometric information in a scene is realized, a time-space field function learning rule is optimized, and the time-space field function fitting difficulty is reduced. According to the invention, based on a time-varying geometric information decoupling strategy guided by time sequence features, a space-time field function is driven to understand an imaging rule before and after geometric change, so that the space-time field function can realize dynamic fitting for different geometric forms at different times; a time-varying shadow information decoupling strategy based on illumination time-varying rule mining is proposed, a time-space field function is enhanced to understand an imaging rule under a shadow change condition, the negative influence of time-varying shadow information on geometric constraints is effectively inhibited, and the quality of a reconstructed image is further improved.

The present invention discloses a method for visual design on a regular wrinkled carrier. The regular wrinkled carrier includes all three-dimensional carriers with regular wrinkles, and its regular wrinkle unit consists of three parts: a convex mountain crease, a concave valley crease, and an un-folded crease unit surface in the middle. Based on the size and density corresponding to the regular wrinkle unit, the regular wrinkled carrier includes: Yoshimura wrinkles, Z-type wrinkles, and Miura wrinkles, and visual design is carried out on various regular wrinkled carriers based on different categories of geometric form languages, including visual rules and translation rules. The present invention proposes a set of visual transfer paths and design methods of geometric form languages on regular wrinkled carriers, solving the visual translation dilemma of geometric form languages that focus on information transmission on regular wrinkled carriers.

A cosmetic pen with cap; the basic shape of the pen is round; the shape changes towards both ends to form a triangle with rounded corners; on the two longer sides of the triangle, the basic round shape flattens out into a geometric form; the pen becomes slightly thinner towards the end; left and right views are identical.

The present invention discloses a design method for a directional deformation hybrid TPMS structure based on additive manufacturing. The method first divides the initial lattice structure and separates it into multiple phase-complementary low-volume fraction substructures. By adopting a deformation strategy that tightly couples structural geometry with function modeling, the geometric form and topological characteristics of the substructures are consciously directional deformed and reconstructed, so that the substructures are intertwined and integrated with each other to form a new hybrid topological structure. The present invention expands the design space and maximizes the effective specific surface area while ensuring a certain volume fraction. At the same time, it has a controllable multi-level pore topology, which can finely control the size of the pores to achieve a rich and diverse pore structure. The present invention can independently control each discrete point on the isosurface by adjusting the design parameters and the offset function, and flexibly obtain different curved surface lattice structures to meet the specific needs of different implants and heat exchangers, etc., with extremely high designability and customization capabilities.

The application discloses an arbitrary differentiable geometric constraint virtual clamp, a dynamic control method and a system, wherein the arbitrary differentiable geometric constraint virtual clamp is characterized in that: in the case that the geometric form of the virtual clamp can be given in an analytical form and is at least second-order differentiable, the constrained geometric form only depends on the spatial position; a scalar constraint equation and a constraint control variable of the virtual clamp are defined, a joint Jacobian matrix of multiple constraints is constructed, a reference constraint control input is calculated by using PD control based on a constraint control expected value and a constraint control error value; the arbitrary differentiable geometric constraint virtual clamp dynamic control method is characterized in that: a null space control input of a mechanical arm is calculated based on a dynamic model, a reference constraint control input is calculated by using the virtual clamp, and an estimated torque is projected to a task space corresponding to a virtual clamp constraint and then compensated by using a disturbance observer. The virtual clamp provided by the application solves the problems of poor universality and heavy calculation burden, simplifies calculation and improves universality.

The invention provides an optimization method for a fuselage barrel section end frame shape-preserving frame and a storage medium. The optimization method comprises the following steps that 1, a fuselage barrel section three-dimensional structure model, a shape-preserving tool three-dimensional structure model and a bottom bracket three-dimensional structure model are constructed; step 2, establishing a fuselage cylinder section grid unit, a shape maintaining tool grid unit and a fuselage cylinder section bottom bracket grid unit; thirdly, constraint relations are applied to the machine body barrel section grid units, the shape maintaining tool grid units and the machine body barrel section bottom bracket grid units; 4, solving deformation results of the fuselage cylinder section three-dimensional structure model, the shape-preserving tool three-dimensional structure model and the bottom bracket three-dimensional structure model; and 5, according to the deformation result, changing the geometric form and the material type of the shape-preserving tool three-dimensional structure model, repeating the step 1 to the step 4, completing the calculation of the deformation result of the fuselage cylinder section three-dimensional structure under different shape-preserving tool geometric forms, and selecting the shape-preserving tool three-dimensional structure model with the minimum deformation according to the result.

The application relates to the technical field of building digitization, and particularly discloses a system for intelligently generating a building component of a Huizhou style based on non-heritage pattern recognition, which collects and analyzes non-heritage component images and semantic descriptions, constructs a pattern narrative knowledge set containing pattern semantic entities and relation predicates, receives target cultural implications and component form constraints, generates a semantic relation topological structure through intelligent reasoning, then instantiates the topological structure into a preliminary geometric contour according to a set of geometric form rules, then performs non-heritage visual stylization enhancement processing on the contour, finally performs multidimensional compliance verification and iterative optimization on the stylized contour, and outputs a digital building component model meeting comprehensive requirements of culture, form, aesthetics and engineering; the application solves the key technical problem of disconnection between artistic conception narration and algorithm form in a traditional generation method, and realizes intelligent and faithful innovative transformation of non-heritage patterns from cultural semantics to constructible geometry.

The application provides a cableway bridge parameterized modeling method based on geometric form finding and space topology mapping, relates to the technical field of bridge engineering digital design and modeling, and the technology comprises the following steps: constructing a calculation domain, analyzing form finding, constructing an assembly reference, component topology mapping and full model generation. The application establishes a full parameterized driving dynamic model: all geometric features of the model are driven by input design parameters and topology relations. Through preset parameter dependence relations and update sequences, the system can automatically and orderly update the whole three-dimensional model when the parameters are changed, realizes "one modification, everywhere update", significantly improves the design iteration and scheme comparison and selection efficiency, and solves the core problem of parameter and model disconnection.