Abstract: A method and apparatus for processing scanning data, a device, and a medium are provided. The method includes: obtaining a plurality of frames of images to be processed including auxiliary feature points, the auxiliary feature points having corresponding distribution true values; performing processing based on the plurality of frames of images to be processed to obtain all three-dimensional coordinate points in a same coordinate system in conjunction with a current camera pose; performing measurement processing on all the three-dimensional coordinate points to obtain target three-dimensional coordinate points; and determining a target position transformation relationship based on the target three-dimensional coordinate points and the distribution true values.

Abstract: Embodiments of the present disclosure relate to a method and apparatus for processing scanning data, a device, and a medium. The method includes: obtaining a plurality of frames of images to be processed including auxiliary feature points, where the auxiliary feature points have corresponding distribution true values; performing processing based on the plurality of frames of images to be processed to obtain all three-dimensional coordinate points in a same coordinate system in conjunction with a current camera pose; performing measurement processing on all the three-dimensional coordinate points to obtain target three-dimensional coordinate points; and determining a target position transformation relationship based on the target three-dimensional coordinate points and the distribution true values.

Abstract: In an embodiment an optoelectronic semiconductor chip includes a semiconductor layer sequence including a first semiconductor region of a first conductivity type, an active zone having a multiple quantum well structure composed of a plurality of quantum well layers and barrier layers, a second semiconductor region of a second conductivity type and a plurality of channels extending through the active zone, wherein the second semiconductor region is located in the channels and is configured for lateral current injection into the active zone, wherein the channels have a first aperture half-angle in the first semiconductor region and a second aperture half-angle in the active zone, and wherein the second aperture half-angle is greater than zero and less than the first aperture half-angle.

Abstract: Embodiments of the present disclosure relate to a method and apparatus for processing scanning, a device, and a medium. The method includes: obtaining scanning process information based on target oral cavity information, scanning a target oral cavity based on the scanning process information to obtain customized scan post data and dental and jaw data, performing calculation based on a preset position transformation matrix between a customized scan post and an adaptive scan post, as well as the customized scan post data to obtain adaptive scan post data, and stitching the dental and jaw data and the adaptive scan post data to obtain target scanning data.

Abstract: Embodiments of the present disclosure relate to a method and apparatus for processing scanning data, a device, and a medium. The method includes: obtaining a plurality of frames of images to be processed including auxiliary feature points, where the auxiliary feature points have corresponding distribution true values; performing processing based on the plurality of frames of images to be processed to obtain all three-dimensional coordinate points in a same coordinate system in conjunction with a current camera pose; performing measurement processing on all the three-dimensional coordinate points to obtain target three-dimensional coordinate points; and determining a target position transformation relationship based on the target three-dimensional coordinate points and the distribution true values.

Abstract: A preparation method of a polymer-derived high-temperature ceramic thin film sensor is provided. Specifically, a sensitive layer precursor layer is prepared by spraying a sensitive layer precursor liquid on an alumina substrate, and the sensitive layer precursor liquid is obtained by mixing precursor liquid with conductive powder. A protective layer precursor liquid is prepared by spraying protective layer precursor liquid on the sensitive layer precursor layer, and the protective layer precursor liquid is obtained by mixing TiB2 nano-powder, insulating powder and the precursor liquid. The protective layer precursor layer, a solder and the sensitive layer precursor layer are simultaneously pyrolyzed by a one-time pyrolysis process, and thus a protective layer, the solder joints and the sensitive layer are obtained simultaneously. Thus, there is no need to pyrolyze the sensitive layer first, saving the time for pyrolyzing the sensitive layer.

Abstract: Methods performed by a first sink device, a source device, or a second sink device. The first sink device is connected to a source device via a first communication link and a second sink device via a second communication link, wherein the second sink device is configured to eavesdrop on communications between the first sink device and the source device on the first communication link. The methods include determining an occurrence of a trigger event and modifying an operation of at least one of the first sink device, the second sink device or the source device based at least on the trigger event occurring.

Abstract: A preparation method of a polymer-derived high-temperature ceramic thin film sensor is provided. Specifically, a sensitive layer precursor layer is prepared by spraying a sensitive layer precursor liquid on an alumina substrate, and the sensitive layer precursor liquid is obtained by mixing precursor liquid with conductive powder. A protective layer precursor liquid is prepared by spraying protective layer precursor liquid on the sensitive layer precursor layer, and the protective layer precursor liquid is obtained by mixing TiB2 nano-powder, insulating powder and the precursor liquid. The protective layer precursor layer, a solder and the sensitive layer precursor layer are simultaneously pyrolyzed by a one-time pyrolysis process, and thus a protective layer, the solder joints and the sensitive layer are obtained simultaneously. Thus, there is no need to pyrolyze the sensitive layer first, saving the time for pyrolyzing the sensitive layer.

Abstract: Liquid crystal antenna box, antenna, and method of manufacturing the antenna box are provided. The antenna box includes first baseplate, second baseplate, liquid crystal layer, and insulation layer. The first baseplate includes a first substrate and a first metal layer. The first metal layer includes a ground part and a via between the ground parts. The second baseplate includes a second substrate and a second metal layer. The second metal layer includes a phase shifter and an interval groove between the phase shifters. Surface spacing between the phase shifter, and the insulation layer in the via or a surface of the first substrate close to the second substrate, surface spacing between the ground part, and the insulation layer at the interval groove or a surface of the second substrate close to the first substrate, and surface spacing between the ground part and the phase shifter, are equal.

Abstract: An antenna, a formation method of the antenna, and an antenna group are provided in the present disclosure. The antenna includes a first substrate, a second substrate, a third substrate and a feed source. A first frequency selective surface is on a side of the first substrate; a reflective layer is on a side of the second substrate; a first electrode layer is on a side of the third substrate; and the third substrate is on a side of the second substrate away from the first substrate, and liquid crystal molecules are between the second substrate and the third substrate; or the third substrate is on a side of the first substrate away from the second substrate, and liquid crystal molecules are between the third substrate and the first substrate. The feed source is on the side of the second substrate or on the side of the third substrate.

Abstract: Embodiments of the present disclosure relate to a method and system for processing intraoral scanning, an electronic device, and a medium. The method includes: obtaining a positioning mode of a scan post in response to a request for scanning an oral cavity including scan posts, scanning the oral cavity to obtain target scanning data, and performing processing based on the positioning mode of the scan post and the target scanning data to determine positioning information of the scan posts.

Abstract: The present disclosure relates to a scanner and a method for scanning. The scanner includes a projection optical system, a first acquisition optical system, a second acquisition optical system, and a data processing system. The projection optical system is configured to synchronously project visible light and infrared light with a stripe pattern to a target area. The first acquisition optical system is configured to acquire a first image based on the infrared light, where the first image is an image with the stripe pattern, and the first image includes facial information and tooth information. The second acquisition optical system is configured to acquire a second image based on the visible light, where the second image is a color texture image. The data processing system is configured to perform data processing based on the first image and the second image to obtain color three-dimensional model data of a measured object.

Abstract: A sensor and its fabrication method are provided. The sensor includes a first glass substrate, a circuit layer on a side of the first glass substrate, and a radio frequency processing chip on a side of the circuit layer away from the first glass substrate.

Abstract: A manufacturing method of a heat pipe structure is provided. Firstly, a step S1 is performed. An original heat pipe structure is provided. The original heat pipe structure includes an enclosed space in a sealed state and an original wick structure disposed within the enclosed space. Then, a step S2 is performed. Portion of the original heat pipe structure is deformed to form a deformation portion. The deformation portion clamps portion of the original wick structure. The enclosed space is separated into two subspaces. Then, a step S3 is performed. The deformation portion is cut to separate the two subspaces to form two heat pipe structures.

Abstract: The disclosure discloses a method and device for generating a digital model. The method includes: acquiring integrated point cloud data of a measured object based on at least one set of measured object images of the measured object; performing mesh processing on the integrated point cloud data with at least two different resolutions so as to obtain at least two mesh models of the measured object; and integrating the at least two mesh models so as to generate an integrated mesh model with multiple resolutions.

Abstract: The present disclosure relates to a three-dimensional scanning system, a method and apparatus for processing scanning data, and a storage medium. The system includes a three-dimensional scanning device and auxiliary member. The auxiliary member is configured to be mounted on an implant of a dental arch in an oral cavity. The three-dimensional scanning device is configured to scan the oral cavity to obtain local multi-frame three-dimensional data of the oral cavity, and to finally optimize and determine, on the basis of the local multi-frame three-dimensional data of the oral cavity and standard three-dimensional data of the auxiliary member, overall three-dimensional data of teeth and gums in the oral cavity. The three-dimensional scanning system can achieve the purposes of reducing the optimization cost and improving the accuracy of the full dental arch, and meets the accuracy requirements of multiple-missing-position or edentulous jaw implant bridges, thereby facilitating popularization and application.