A medical image data processing system comprises processing circuitry configured to receive a three-dimensional medical imaging data set, process the three-dimensional medical imaging data set to determine a curved plane that has a shape representative of a shape of at least one anatomical structure, wherein the at least one anatomical structure comprises a plurality of sub-structures, and obtain an image based on values of the medical imaging data set at a plurality of sample points of the curved plane.

According to one embodiment, a medical image processing apparatus includes processing circuitry. The processing circuitry extracts a core line of a tubular structure from three dimensional medical image data. For each section of interest of a plurality of sections of interest, the section of interest crossing the core line, being a tubular cross-section of the tubular structure, and including a portion of interest, the processing circuitry sets a straight line in the section of interest crossing the core line and passing through the portion of interest included in the section of interest as a first cut-off line. Further, the processing circuitry sets a curved plane such that the curved plane passes through a plurality of first cut-off lines being set in the corresponding plurality of sections of interest, and the processing circuitry generates a reconstruction image along the set curved plane.

A three-dimensional region of interest (ROI) is established with a high degree of accuracy, by a simple method without increasing a burden on the operator, in generating a three-dimensional projected image from medical volume data according to rendering, achieving more efficient interpretation of three-dimensional image and streamlining of diagnostic flow, with the use of the diagnostic image generation apparatus. An energy map is generated on a predetermined tomographic plane, assuming a preset start point as a reference and searching for a path that minimizes the energy, and then the path is set as a boundary of the three-dimensional ROI. The start point may be decided on the basis of the boundary inputted by a user, or the user may set the start point. The user may be allowed to adjust the boundary having been set. The boundary may also be determined on another plane orthogonal to the predetermined tomographic plane.

Aspects of the invention provide a method of constructing a patch for use in reconstruction of tubular anatomical structures, the method comprising: a) providing by a system including a processor and a graphical user interface acquiring a digital image of a tubular structure; b) displaying the digital image on the graphical user interface; c) segmenting by the system the digital image; d) generating by the system a three dimensional rendered model of the tubular structure based on the segmented digital image and displaying the three dimensional model on the graphical user interface; e) defining by the system an axial central line through the tubular structure; f) identifying by the system one or more incision points on a surface of the model; g) identifying by the system the diameter of the tubular structure, taken from the central line, at each of a plurality of cross sections through the tubular structure; h) simulating by the system one or more cuts through the tubular structure corresponding with the identified incision points; i) determining by the system joining points in each cross section for attachment of a tissue patch thereto; j) determining by the system a required diameter of the tubular structure at each cross section; k) determining by the system the a required diameter of the tissue patch by subtracting the diameter of the tubular structure from the required diameter of the tubular structure; l) generating by the system a model of the tissue patch; m) applying by the system the model of the tissue patch to the model of the tubular structure such that the modelled tissue patch attaches to the model of the tubular structure at each of the joining points.

A method for reconstructing a three-dimensional space scene based on photographing is disclosed, comprising the following steps: S1, importing photos of all spaces, and making the photos correspond to a three-dimensional space according to directions and viewing angles during capture, so that a viewing direction of each pixel, when viewed from the camera position of the three-dimensional space, is in line with that during capture; S2, regarding a room as a set of multiple planes, determining a first plane, and then determining all the planes one by one according to relationships and intersections between the planes; S3, marking a spatial structure of the room by a marking system and obtaining dimension information; and S4, establishing a three-dimensional space model of the room by point coordinate information collected in the step S3. In the present disclosure, the three-dimensional space model of a scene including dimensions and texture can be restored with no details lost; meanwhile, the three-dimensional space scene can be edited and modified quickly and conveniently, and a two-dimensional floor plan with dimensions and adequate accuracy can also be generated.

A method, system and computer readable storage media for segmenting individual intra-oral measurements and registering said individual intraoral measurements to eliminate or reduce registration errors. An operator may use a dental camera to scan teeth and a trained deep neural network may automatically detect portions of the input images that can cause registration errors and reduce or eliminate the effect of these sources of registration errors.

A method of editing a digital three-dimensional structure associated with one or more two-dimensional texture in real time is disclosed, wherein the structure and one or more texture are processed and output same in a user interface, and user input is read in the user interface and processed into a cut shape of the three-dimensional structure. A simplified structure is generated based on the three-dimensional structure, and points of the cut shape are associated with the simplified structure to generate a curve. Points of the curve corresponding to edges of the curve on the simplified structure are determined, and geometrical characteristics and texture coordinates of the new points calculated. A new three dimensional structure is generated along the curve and layers of the structure are joined, for the cut and layered structure to be rendered in the user interface. An apparatus embodying the method is also disclosed.

A method carried out by a printing device includes receiving a model of a three-dimensional component, receiving an output structure definition for the component, and segmenting the model of the component into a stack of slices. The method further includes, for each of the slices in the stack, outputting a respective printing layer comprising an arrangement of one or more slice instances of the slice according to the output structure definition.

Alignment of a 2D image to a corresponding 3D image is provided by writing a pattern into a 3D sample. The pattern is at known positions in the 3D image, and provides visible reference features in the 2D image. This permits accurate determination of the plane in the 3D image that corresponds to the 2D image.

Systems and methods for trimming dental aligners include a cut line system for identifying a first point and a second point based on a line around tooth (LAT) for a tooth of a model representative of a dentition of a user, where the first point is disposed on a tooth-gingiva interface of the tooth. The cut line system defines a cut plane at a distance from the first point toward the second point, where the cut plane intersects a line between the first point and the second point, identifies a plurality of points on the LAT based on the cut plane, defines a cut line based on the plurality of points on the LAT and the first point, and controls a cutting system to cut the dental aligner along the cut line.