10 results about "Shape alignment" patented technology

The invention provides an accurate positioning method for a part tray, and relates to the technical field of part machining, and the method comprises the following steps: providing a part tray provided with an identification point which is arranged at a preset position on the tray, the part tray comprises a station bottom frame, a station machine base, a feeding station frame, a wedge-shaped guide plate frame, a station alignment pin, a guide insertion frame and a tray positioning pin control structure. Acquiring an image of the part tray through an image acquisition device, and performing preprocessing and feature extraction on the image to identify identification points in the image; and according to the identification points in the image, determining initial position and attitude estimation by combining a preset corresponding relation between the identification points and the actual position and attitude of the part tray. Through combination of image recognition and a bacterial foraging optimization algorithm, high-precision positioning of the part tray is achieved, the part tray is accurately adjusted to the preset position through the mechanical arm adjusting mechanism, and the production efficiency and the machining accuracy are improved.

The invention discloses a method for automatically producing whole-body digital human data, which comprises a first model training stage: collecting a real human speaking data set and acquiring an open source data set as an initial training data set, training a lip shape alignment model and a digital human generation model, and performing data enhancement and data expansion processing based on the initial training data set to obtain a second model training stage; continuing to train the lip shape alignment model and the digital human generation model until the precision of the lip shape alignment model and the digital human generation model meets a preset model parameter threshold value; and a second model training stage: when the data volume of the training data set in the first model training stage reaches a preset data volume threshold value, generating new description text data based on the video data in the training data set, and adding the description text data into the video data set, performing fine tuning on the digital human generation model and replacing the corresponding model in the first model training stage; and executing loop iteration of the first model training stage and the second model training stage at the same time until a preset training target is met.

The invention provides an alignment method and device for a three-dimensional model pose and a human pelvis pose, and relates to the technical field of medical image registration, and the method comprises the steps: obtaining pelvis 2D data of a patient in a pelvis minimally invasive surgery and a pre-constructed model pose of a three-dimensional model of the patient; the method comprises the following steps: determining a plurality of initial pose offset matrixes according to the positions of a plurality of interest points in pre-configured pelvis 3D data and the target position of each interest point in the body of a patient, determining a target pose offset matrix in the plurality of initial pose offset matrixes, and adjusting the model pose according to the target pose offset matrix to obtain a target pose. The model pose of the three-dimensional model is aligned with the pelvic pose of the patient. According to the method, the globally optimal solution is searched by adopting the step-by-step subdivision search strategy, the branching and trimming steps are realized, the scale of the search space is reduced, the algorithm efficiency is improved, and the method has higher adaptability and universality for the shape alignment problem.

Several examples describe techniques for aligning shapes using pose information for AI systems and applications. The systems and methods described here can use one or more pipelines configured to align shapes, such as three-dimensional shapes, using the shapes' poses. In some examples, training images to identify the poses, along with ground-truth poses associated with the training images, can be used to train a machine learning model. During and / or after training, the machine learning model can then be used to process additional images to identify poses of additional shapes. In some examples, a pose associated with a shape may include a gravity orientation and / or an azimuth orientation of the shape, as represented by an image.These poses can then be used to align the additional forms, such as in relation to a canonical pose.

The present invention discloses a crack detection device for civil structures, relating to the technical field of civil structure detection, wherein an integrated positioning frame is clamped with an in-and-out electric push rod at one end, and a combined positioning frame is fixedly connected to the position of the in-and-out electric push rod corresponding to the integrated positioning frame at one end, and a semicircular electric slide rail is fixed on the top of the integrated positioning frame and the combined positioning frame, and the top of the semicircular electric slide rail is connected to a transposition moving bar through a slide rail seat, and the top of the transposition moving bar is clamped with an alignment electric slide rail, and the top of the alignment electric slide rail is connected to a T-shaped alignment block through the slide rail seat, and the top of the T-shaped alignment block is connected to a correction electric slide rail, which effectively solves the problem in the prior art that the equipment position adjustment is inconvenient and synchronous adjustment processing cannot be performed according to the shape of the civil structure, thereby reducing data deviation caused by inaccurate alignment, and at the same time utilizing multiple groups of internal and external detection coordination processing and cleaning components to clean and detect the civil structure, thereby improving data accuracy and detection efficiency.

Presentations showing eddy current (EC) test results can be generated and displayed. For example, amplitude or phase values ​​associated with an eddy current measurement signal can be presented graphically, such as by aligning an index of the amplitude or phase value with a shape representing the object under test, where the index corresponds to the location on or within the shape from which the eddy current measurement signal was obtained. In another example, the visual attributes of the displayed index of the amplitude or phase value can be assigned based on the defect class, such as using different colors corresponding to different defect classes, when the visual attributes are defined by regions within the impedance plane. The use of attributes to identify defects can be carried out either separately or in combination with alignment with the shape of the index.

The application provides an alignment mark, a preparation method thereof and a mask plate. The alignment mark is formed on a substrate and comprises a plurality of mark structures arranged in parallel with each other. The mark structure comprises a plurality of alignment blocks arranged discontinuously. By dividing the existing strip-shaped alignment mark into the discontinuous alignment blocks, the pattern density of the alignment mark region and the functional structure region can be adjusted more conveniently, the pattern density of the two regions is adapted to each other, the process compatibility of the alignment mark and the functional structure is improved, and the preparation of the unnecessary process level and the mask plate is reduced.

Embodiments of the present application provide a two-dimensional data and three-dimensional model combined display method, device, equipment and medium. The method comprises: obtaining model parameters of a three-dimensional model and data parameters of two-dimensional data; displaying the three-dimensional model on a first canvas; creating a second canvas on the upper layer of the first canvas, with the center point of the second canvas aligned with the center point of the three-dimensional model; converting the data parameters into parameters in the coordinate system of the second canvas; and displaying the two-dimensional data on the second canvas based on the converted data parameters. Since the position and shape of the two-dimensional data defined by the converted data parameters on the projection image corresponding to the currently displayed three-dimensional model are aligned with the position and shape of the two-dimensional data defined by the data parameters before conversion on the projection image corresponding to the previously displayed three-dimensional model, the automatic and accurate alignment of the two-dimensional data and the three-dimensional model can be achieved when displaying the two-dimensional data based on the converted parameters.

Methods and techniques for using an augmented reality device for determining an orientation of an instrument for inserting a medical device are provided. One such method includes simulating an insertion point and an orientation of a simulated surgical hardware installation on a diagnostic representation of a bone, and using an augmented reality based electronic device to align an instrument for inserting a surgical hardware installation at a desired orientation through an insertion point of the bone by displaying visual indicia indicating the insertion point and the orientation of the simulated surgical hardware installation. Disclosed herein is also a system and method having a concentric shape alignment system for medical device placement in the body, such as in a bone.

The present disclosure relates to systems, non-temporary computer-readable media, and methods for aligning curves to precise geometric shapes using a geometry alignment algorithm. The disclosed systems, for example, generate a set of discrete points along a curve represented in a digital image by scanning the curve extending between a first vertex and a second vertex represented in the digital image. The disclosed systems determine an arrangement or sequence for comparing the set of discrete points with a first geometry and a second geometry by comparing a centroid of the curve with a centroid of the first geometry and a centroid of the second geometry. The disclosed systems also determine, according to the arrangement or sequence,The sequence involves a first similarity of the curve to the first geometry and a second similarity of the curve to the second geometry. The disclosed systems generate curve segments that are aligned with either the first or the second geometry.