Abstract: A method including: obtaining a first image and a second image by collecting a symbol image projected onto a surface of a measured object with different image collection devices, including a plurality of target symbols randomly distributed in a preset direction; obtaining a first target pixel point of each symbol in the first image, determining second target pixel points matched with the first target pixel points one by one in the second image so as to complete matching, and conducting, when the first target pixel point in the first image does not complete matching, secondary matching on the first target pixel point that does not complete matching; and determining three-dimensional coordinates of the first target pixel point at least according to pre-determined pixel coordinates of the first target pixel point in the first image and pixel coordinates of the second target pixel point in the second image.

Abstract: Provided are a tooth model generation method and apparatus, and an electronic device and a storage medium. The tooth model generation method includes: performing instance segmentation on acquired CBCT data of a target dental jaw, so as to determine voxel data of individual teeth forming the target dental jaw; performing reconstruction according to the voxel data of the individual teeth in the target dental jaw, so as to obtain reconstructed three-dimensional data; registering the reconstructed three-dimensional data and scanned three-dimensional data which is acquired by means of an intraoral scanner scanning the target dental jaw; and performing fusion on the basis of the registered reconstructed three-dimensional data and the registered scanned three-dimensional data, so as to generate a tooth model.

Abstract: Provided are a locking device and a printing apparatus. The locking device includes a first limiting member, a second limiting member, and a rotating member. The second limiting member is disposed opposite to the first limiting member along a first direction, and a clamping space for receiving a target member is defined between the first limiting member and the second limiting member. The rotating member is configured to drive at least one of the first limiting member and the second limiting member, enabling relative movement between the first limiting member and the second limiting member in the first direction to jointly clamp or release the target member placed in the clamping space.

Abstract: A method and device for processing oral scanning data, and an apparatus are provided. The method includes: performing a scanning task on a plurality of scan regions in an oral cavity in a preset scanning sequence; obtaining target scanning data of the current scan region when a scanning completion event of the current scan region is monitored; performing a data processing task on the target scanning data when no data processing task is being performed; and performing the scanning task on the next scan region according to the scanning sequence, and determining the next scan region as a new current scan region.

Abstract: The present application provides a method for generating 3D printing data, a printing method, and an electronic device. The method for generating 3D printing data includes: acquiring a 3D model; generating support columns corresponding to at least one portion to be supported in the 3D model based on the at least one portion to be supported, where an end face of the support column facing the portion to be supported is a connecting surface, and the connecting surface is spaced apart relative to the portion to be supported; generating a support head between the corresponding connecting surface and the portion to be supported, where the support head includes at least two sub-support members, each of which is connected at both ends to the corresponding connecting surface and the portion to be supported, respectively; and generating 3D printing data based on the 3D model, the support columns, and the support head.

Abstract: Disclosed are a method and apparatus for predicting a loop closure path, a non-transitory storage medium, and a processor. The method comprises: detecting, in the process of simultaneous localization and mapping, whether a scanning movement trajectory of a scanning device has not passed through a start position on a scanning path for a second time within a preset duration; and predicting a loop closure path when it is detected that the scanning movement trajectory of the scanning device has not passed through the start position for the second time within the preset duration.

Abstract: A printing method based on consumable management, a printing system, and a printing device are provided. The method is applied to the printing device including an image sensor and/or a near-field sensing component, and includes: receiving a print job; performing first identification on an image label of a consumable container by using the image sensor, to obtain first consumable identity information corresponding to the image label, and/or performing second identification on a near-field sensing tag of the consumable container by using the near-field sensing component, to obtain second consumable identity information corresponding to the near-field sensing tag; performing consumable verification based on the first consumable identity information and/or the second consumable identity information; and performing, by the printing device, the print job in response to a verification result being compatible with the print job.

Abstract: A method and an apparatus for accessing a wireless network, and a storage medium are provided. The method includes scanning, by a target device, a target identifier. The target identifier contains authentication information for logging in to a target wireless network, and the target device includes an oral scanning device. The method further includes: identifying the authentication information for logging in to the target wireless network, which is contained in the target identifier; and accessing the target wireless network based on the authentication information.

Abstract: A light uniformity adjustment method and apparatus, a device, and a storage medium are provided. The light uniformity adjustment method includes: obtaining a first captured image, wherein the first captured image is obtained by an acquisition device photographing a first display image displayed on a printing screen; calculating a weighted variance value of the first captured image to obtain a first numerical value, and determining an initial current according to the first numerical value; obtaining a second captured image, wherein the second captured image is obtained by the acquisition device photographing, under the initial current, a second display image displayed on the printing screen; and calculating a weighted variance value of the second captured image to obtain a second numerical value, and determining initial light intensity of the printing screen according to the second numerical value.

Abstract: A method for processing three-dimensional scanning data is provided. The method includes acquiring a first coordinate set sequence by a target optical tracker measuring a first target ball group when the target optical tracker is at a plurality of different target positions, and a position of the first target ball group remains unchanged. A second coordinate set sequence is obtained by a laser tracker measuring a second target ball group when the target optical tracker is at the plurality of different target positions, a position of the laser tracker remains unchanged, and a relative position of the second target ball group to the target optical tracker remains unchanged. A target transformation matrix between a coordinate system of the target optical tracker and a coordinate system of the laser tracker is determined based on the first coordinate set sequence and the second coordinate set sequence.

Abstract: Disclosed is a method and an apparatus for tracking a motion trajectory of jaw bone, a device and a medium. The method includes: a first jaw bone three-dimensional model of a user is acquired; the motion trajectory of the preset identification point is acquired, and the identification point is disposed at jaw bone of the user; and the motion trajectory of the first jaw bone three-dimensional model is determined according to the motion trajectory of the identification point, for tracking the motion trajectory of jaw bone of the user.

Abstract: Provided is a method for acquiring a tooth model, including: in response to an acquired current point cloud data frame of a tooth, generating and displaying a current tooth model according to a preset tracking registering algorithm and the current point cloud data frame; storing the current point cloud data frame into a preset database, and according to all point cloud data frames included in the preset database, determining whether a preset model updating condition is met; and in a case that the preset model updating condition is met, determining a reference tooth model according to all the point cloud data frames, and updating the current tooth model according to the reference tooth model.

Abstract: A scanning method and system of a scanning rod, and a storage medium. The method includes: scanning a scanned scene in a first scanning rod assembling status to obtain first scanning data; scanning the scanned scene in a second scanning rod assembling status to obtain second scanning data; and obtaining position information of assembly sites in the scanned scene based on the first scanning data and the second scanning data. By using a batch scanning manner in the present disclosure, the scanning rods are installed at a third assembly site and a first assembly site for scanning to obtain the first scanning data; the scanning rods are installed at the third assembly site and a second assembly site for scanning to obtain the second scanning data.

Abstract: A point cloud fusion method includes: acquiring a to-be-fused point cloud; determining a target deformation field corresponding to the to-be-fused point cloud; adjusting a current observation point cloud to obtain a first observation point cloud; adjusting the to-be-fused point cloud to obtain a first to-be-fused point cloud; copying first to-be-fused points in the first to-be-fused point cloud to obtain a copy point cloud corresponding to the first to-be-fused point cloud; updating the copy point cloud and the first observation point cloud to obtain an updated copy point cloud and an updated first observation point cloud; and fusing the updated first observation point cloud and the updated copy point cloud to enable the updated copy point cloud and the updated first observation point cloud to be located at an updated zero isosurface.

Abstract: Embodiments of the present disclosure provide a method for processing a task and apparatus, and a device. After receiving a target task, a first device may automatically search whether a second device capable of providing a computing service is present in an environment. When the second device capable of providing the computing service is found to be present in the environment, the first device may send verification information to the second device, so that the second device may determine, based on the verification information, whether the second device is able to process the task. In a case that the second device is able to process the task, the two devices may establish a connection, the first device may transfer part or all of the task to the second device for processing, and a processing result is acquired.

Abstract: Embodiments of the present disclosure provide a three-dimensional reconstruction method. Mark points are set on a surface of a target object. Then, multiple frames of mark point three-dimensional point cloud are reconstructed based on image frames containing a mark point pattern, and multiple frames of target object three-dimensional point cloud are reconstructed based on image frames containing a structured light pattern. As a coordinate transformation relationship between the multiple frames of the three-dimensional point cloud can be accurately determined, and a coordinate transformation relationship between a single frame of the mark point three-dimensional point cloud and a single frame of the target object three-dimensional point cloud can also be determined, the mark points can further be used to assist in stitching the multiple frames of the target object three-dimensional point cloud, to obtain a more accurate stitching result.

Abstract: A three-dimensional scanning method, apparatus and system, and a device and a medium are provided. The system includes: a three-dimensional scanning apparatus, a service end, and a plurality of display terminals. The service end is separately connected to the three-dimensional scanning apparatus and each of the display terminals. Each of the display terminals is arranged at a target position. Anyone of the display terminals is configured to send a three-dimensional scanning request to the service end. The service end is configured to send a three-dimensional scanning instruction to the three-dimensional scanning apparatus based on the three-dimensional scanning request. The three-dimensional scanning apparatus is configured to perform scanning based on the three-dimensional scanning instruction to obtain three-dimensional scanning data. and send the three-dimensional scanning data to the service end.

Abstract: A method and apparatus for matching gingival data, and a device are provided. The method includes: acquiring first data of an oral cavity in a first state, the first data including three-dimensional data of a gingiva; acquiring second data of the oral cavity in a second state, the second data including three-dimensional data of a mark point of the scanning rod mounted on a implant and scanning data corresponding to a scanning area, the scanning data including data of a gingiva and the mark point of the scanning rod in the scanning area; and performing a splicing operation on the three-dimensional data of the gingiva and the three-dimensional data of the mark point according to the scanning data of the scanning area to acquire matched data of the gingiva and the scanning rod.

Abstract: Provided are a method and an apparatus for three-dimensional reconstruction. The method includes: acquiring a first image and a second image, wherein the first image and the second image are obtained by respectively collecting a target image by a pre-calibrated binocular camera; respectively determining positions of feature points in the first image and the second image, and respectively determining a plurality of first adjacent domains corresponding to the feature points in the first image and a plurality of second adjacent domains corresponding to the feature points in the second image; matching the feature points in the first image with the feature points in the second image one to one according to matching degree between the first adjacent domains and the 10 second adjacent domains; and performing three-dimensional reconstruction of an object to be measured according to matched feature points in the first image and the second image.