Abstract: A method of aligning images for 3D imaging of a sample includes, for each of multiple cameras located around a vessel, activating a respective light source that provides backlighting for the vessel, and capturing a respective 2D calibration image of the vessel. The method also includes, for each 2D calibration image, measuring a respective vertical position, horizontal position, and rotation of the image, in part by detecting edges of the vessel as depicted in the image. The method also includes generating calibration data based on the measured vertical positions, horizontal positions, and rotations for the respective 2D calibration images, capturing, by each camera, a respective set of 2D images of the sample in the vessel, and digitally resampling, using the calibration data, at least one of the respective sets of 2D images to correct for vertical offset, horizontal offset, and rotational offset of the set(s) of 2D images.

Abstract: Systems, methods, and computer-readable media for using full waveform inversion for imaging surveyed mediums are provided. The full waveform inversion uses a Sifrian functional to fully leverage Hessian information and update a model by augmenting and assembling data derived from the Sifrian functional when equilibrated. The Sifrian inversion produces high resolution images of the surveyed medium typically only seen with full Hessian inversions and can produce such images without requiring supercomputer computation power or extremely long computation time.

Abstract: An electronic device may include a light based image generation system configured to generate images of a 3-dimensional object in a scene. The light based image generation system can include a feature extractor, a triplane decoder, and a volume renderer. The feature extractor can receive lighting information about the scene and a perspective of the object in the scene and generate corresponding triplane features. The triplane decoder can decode diffuse and specular reflection parameters based on the triplane features. The volume renderer can render a set of images based on the diffuse and specular reflection parameters. A super resolution image can be generated from the set of images and compared with ground truth images to fine tune weights, biases, and other machine learning parameters associated with the light based image generation system. The light based image generation system can be conditioned to generate photorealistic images of human faces.

Abstract: Some implementations relate to methods, systems, and computer-readable media for determining updated states of rigid body objects. In some implementations, the method includes receiving a model representation of rigid body objects, receiving an input state of the rigid body objects, determining that a relative velocity meets a threshold velocity, responsive to determining that a first rigid body object and a second rigid body object are in contact and that the relative velocity meets the threshold velocity, constructing a merged representation that represents the first rigid body object and the second rigid body object, applying a solver based on the input state and the merged representation to obtain an updated state for the first rigid body object and the second rigid body object, and causing the first rigid body object and the second rigid body object in the updated state to be displayed within a virtual environment.

Abstract: The present embodiments relate to methods and systems for analyzing and representing diamond appearance, and to an interactive, web-based encyclopedia of diamond cuts. The analytical methods involve the use of several unique techniques designed to capture and represent the nuances of different diamond cuts precisely. The graphical representations translate this complex gemological data into a format that is accessible and understandable to non-expert users. The diamond cut encyclopedia, generated by a unique enumeration algorithm, provides a comprehensive and detailed resource for both experts and enthusiasts alike. The present embodiments present a significant advancement in the field of gemology, offering increased precision in diamond analysis, user-friendly interfaces, and an efficient method for creating a comprehensive, interactive diamond cut encyclopedia.

Abstract: A ray tracing unit implemented in a graphics rendering system includes processing logic configured to perform ray tracing operations on rays, a dedicated ray memory coupled to the processing logic and configured to store ray data for rays to be processed by the processing logic, an interface to a memory system, and control logic configured to manage allocation of ray data to either the dedicated ray memory or the memory system. Core ray data for rays to be processed by the processing logic is stored in the dedicated ray memory, and at least some non-core ray data for the rays is stored in the memory system. This allows core ray data for many rays to be stored in the dedicated ray memory without the size of the dedicated ray memory becoming too wasteful when the ray tracing unit is not in use.

Abstract: The disclosure provides an image rendering method and apparatus, an electronic device, and a storage medium. The image rendering method includes: obtaining target camera association information and target light source association information; determining target voxel association information of each voxel in a target object based on the target camera association information, the target light source association information, and a pre-trained target object attribute determination model; and rendering a target structure image corresponding to the target object based on the target voxel association information of each voxel.

Abstract: Embodiments of this application provide methods and apparatuses for compressing and decompressing a three-dimensional (3D) map, to reduce a data volume of a 3D map. The method for compressing a 3D map includes: obtaining a 3D map descriptor, where the 3D map descriptor corresponds to at least one 3D map point of the 3D map; performing binarization on a relationship between the 3D map descriptor and at least one preset threshold vector to obtain binary data; and performing quantization on a difference between the 3D map descriptor and the at least one preset threshold vector to obtain quantized data.

Abstract: A display device including a controller and a display panel. The controller receives original image data and output a display image signal. The display panel receives the display image signal and displays a display image corresponding to the display image signal. The controller includes an image shift controller and a memory. The image shift controller generates shifted image data by modulating the original image data to shift the display image sequentially along a preset shift path on the display panel. The memory stores a shift path value indicating a distance by which the display image has been shifted on the preset shift path. The image shift controller generates the display image signal by processing the shifted image data. When the display device is powered on, the image shift controller generates shifted image data corresponding to a shift path value stored in the memory.

Abstract: An information processing system includes: an acquisition unit configured to divide a target area into a plurality of meshes of a predetermined size, and acquire mesh data indicating the environment of the target area with height information about the plurality of meshes on a per-mesh basis; a first ray tracing unit configured to determine a two-dimensional ray trace from a transmission point to a reception point on the basis of the mesh data, a radio wave being transmitted at the transmission point, the radio wave being received at the reception point; a second ray tracing unit configured to determine a three-dimensional ray trace corresponding to the two-dimensional ray trace, on the basis of the mesh data, and height information about the transmission point and the reception point; and a radio field intensity calculation unit configured to calculate an intensity of the radio wave at the reception point, using one or more three-dimensional ray traces determined by the second ray tracing unit.

Abstract: The present disclosure provides a three-dimensional point cloud generation method, apparatus and an electronic device, and relates to the field of artificial intelligence technologies such as virtual reality, augmented reality and computer vision. A specific scheme includes: generating a two-dimensional (2D) depth map of a first three-dimensional (3D) image; calculating gradient values of multiple pixels in the 2D depth image, and performing filter process on the 2D depth image based on the gradient values of the multiple pixels to obtain a target depth image; and generating a 3D point cloud of the first 3D image based on the target depth map. According to the present disclosure, a generation efficiency of the three-dimensional point cloud can be improved.

Abstract: In implementations of techniques and systems for chamfer tools in volumetric sculpting software, a processing device receives an indication of a brushed region of a three-dimensional (3D) object to be chamfered and a chamfer size. A machine-learning model determines surface voxels in the brushed region representing an edge or corner voxel. The machine-learning model also determines parameters for the edge or corner voxel that define a chamfer plane and a chamfer coefficient. The chamfer plane is then moved in a direction normal to the chamfer plane by a distance based on the chamfer size and the chamfer coefficient. To generate a chamfer, the processing device performs an addition or subtraction operation on the 3D object to the moved chamfer plane for the edge or corner voxel.

Abstract: A method for creating a reference map representation using an artificial neural network, wherein the neural network comprises an encoder and a decoder. The method includes: receiving point cloud data representing a point cloud of the environment of the motor vehicle that was created on the basis of a detection of an environment of a motor vehicle by an environmental sensor of the motor vehicle; receiving state data representing a state of the environmental sensor during the detection of the environment by the environmental sensor; training the encoder and the decoder on the basis of the point cloud data and the state data.

Abstract: Techniques are described for automating the design and manufacture a dental restoration appliance for restoring the dental anatomy of a patient. For example, a system processes a digital three-dimensional (3D) model of a future (desired) dental anatomy of a patient, the future dental anatomy representing an intended shape of at least one tooth of the patient. The system includes a landmark identifier configured to automatically compute, based on the digital 3D model of the future dental anatomy of the patient, one or more landmarks of the future dental anatomy of the patient. The system also includes a custom feature generator configured to automatically generate, based on the one or more landmarks, one or more custom appliance features for a dental appliance for restoring the at least one tooth of the patient. The system further includes a memory device configured to store a digital model of the dental appliance.

Abstract: According to examples, a processor may identify locations on a digital 3D model of an object corresponding to positions at which features are to be added to the object. For each of a plurality of locations of the identified locations, the processor may identify displacements of each of a plurality of patch points around the location from the surface of the digital 3D model. The processor may also create a map of the digital 3D model that encodes the identified displacements of the patch points around the locations, in which a 3D fabrication system is to fabricate the object to include the plurality of features based on the digital 3D model and the created map.

Abstract: Methods and systems for generating geometric models of buildings from multiview imagery are provided. An example method involves displaying at least a first image and a second image that depict the building from different points of view, providing functionality for a user to annotate, with reference to at least the first image and the second image, a three-dimensional structure of a first building section of the building having a polygonal outline of a first substantially horizontal roof structure situated at a first height, and a three-dimensional structure of a second building section of the building having a polygonal outline of a second substantially horizontal roof structure situated at a second height lower than the first height. The polygonal outline of the second substantially horizontal roof structure is annotated by selecting a point located directly on one of the side walls of the first building section.

Abstract: An augmented reality (AR) device generates hand annotations for an image depicting a user's hand. The device includes a display, a processor, and a memory storing instructions for performing operations. The device performs a calibration operation to generate a 3-D model of the user's hand based on measurements. The calibration operation prompts the user to mimic the hand gesture presented by the animated virtual representation of a hand to obtain optimal images of the hand for hand pose estimation. A 3-D virtual representation of a hand in a hand pose corresponding with a hand gesture is generated based on the 3-D model. The device presents the 3-D virtual representation of the hand in AR via the display. During presentation, the device detects an input and captures an image of the user's hand positioned to correspond with the 3-D virtual representation. The captured image is stored with corresponding hand annotations based on the 3-D model.

Abstract: The present disclosure relates to a method for generating a design based on a learned condition performed by a design generation apparatus based on a learned condition. According to an embodiment of the present disclosure, the method may comprise acquiring an image from information including images and texts; learning features of the acquired image; extracting texts from the information and matching the extracted texts with the learned features of the image; learning a condition for a design to be generated based on the image through the matching; receiving texts inputted by a user for design image generation; identifying a condition corresponding to the user's texts; and generating a design image based on the identified condition.

Abstract: An information processing system includes: a first ray tracing unit configured to determine a two-dimensional ray trace from a transmission point at which a radio wave is transmitted, to a reception point at which the radio wave is received; a second ray tracing unit configured to determine a three-dimensional ray trace corresponding to the two-dimensional ray trace, using height information about the transmission point and the reception point; and a radio field intensity calculation unit that calculates the intensity of the radio wave at the reception point, using one or more three-dimensional ray traces determined by the second ray tracing unit.

Abstract: Systems and methods for generating a volumetric video in which all frames are temporally coherent.