Shining 3D Tech Co., Ltd.

The present disclosure relates to the technical field of image fusion, and provides a method and apparatus for three-dimensional dynamic tracking, an electronic device, and a storage medium. The method includes: acquiring facial dynamic data, three-dimensional tooth data, and face template data; registering the acquired facial dynamic data, three-dimensional tooth data, and face template data to a preset coordinate system to obtain initial point cloud data; fusing initial depth point cloud data to acquire a contour plane, and acquiring target depth point cloud data; back-projecting the target depth point cloud data to initial texture data, and acquiring target texture data corresponding to the facial dynamic data after back-projection; optimizing initial face template point cloud data to acquire target face template point cloud data fitting the target face template point cloud data and a tooth region identified by the initial texture data with initial three-dimensional tooth data in a fitting region.

The present disclosure relates to a three-dimensional (3D) scanner, a 3D system, and a 3D reconstruction method. An emitting device in the three-dimensional is configured to emit preset light rays, the preset light rays including at least two types of monochromatic light rays; a collimating device is configured to perform uniform illumination processing on the preset light rays; a pattern forming device is configured to project the preset light rays undergone uniform illumination processing in a form of a structured light pattern; an optical path adjustment device is configured to change a transmission path of the structured light pattern so as to project the structured light pattern to a target object, and project the structured light pattern modulated by the target object to the image acquisition device; and an image acquisition device is configured to perform spectral splitting on the structured light pattern modulated by the target object, and acquire multiple split structured light patterns through different cameras for 3D reconstruction. Therefore, the reduction of hardware cost required by a 3D reconstruction method is achieved; and moreover, 3D reconstruction can be performed only by a 2D image captured in a single instance, so that the reconstruction efficiency of an image is improved to a great extent.

The present application discloses a three-dimensional scanner and a three-dimensional scanning method. The three-dimensional scanner includes: an image projection device, configured to project light onto a target object, wherein the light includes predetermined light projected in the form of a color-coded stripe that is formed by coding stripes of at least two colors; and an image acquisition device, configured to acquire light modulated by the target object so as to obtain at least one stripe image in the case where light is projected onto the target object by the image projection device, wherein the obtained stripe image is taken as a coding image to determine respective stripe sequences and as a reconstruction image to perform three-dimensional reconstruction on the target object.

The present invention discloses a line stripe mismatch detection and three-dimensional reconstruction method and device. The method includes: acquiring a first image of line stripes collected by a first camera and a second image of line stripes collected by a second camera, where the first image at least includes: a first line stripe and a second line stripe; the second image at least includes: a third line stripe and a fourth line stripe, the first line stripe is adjacent to the second line stripe, and the third line stripe is adjacent to the fourth line stripe; matching the first line stripe with the third line stripe, determining a first test distance between the first line stripe and the third line stripe, matching the second line stripe with the fourth line stripe, and determining a second test distance between the second line stripe and the fourth line stripe; and determining whether the line stripes are mismatched according to the first test distance and the second test distance. The present invention solves the technical problem of incapability of detecting whether the line stripes are mismatched.

The present disclosure provides a scanning control method and apparatus, a system, a storage medium, and a processor. The control method includes: controlling a scanner to preliminarily scan a to-be-scanned object according to a predetermined path to obtain a scanned model of the to-be-scanned object; determining second predetermined positions of the scanner corresponding to respective first predetermined positions of the to-be-scanned object according to the scanned model; and controlling the scanner to scan, at least at part of the second predetermined positions, the to-be-scanned object at the corresponding first predetermined positions until a three-dimensional model is obtained. According to the control method, scanning positions of the scanner are determined according to the scanned model obtained by preliminary scanning and positions of the to-be-scanned object, and part of the scanning positions are selected for scanning.

The present disclosure relates to a method and an apparatus for generating a three-dimensional model, a device, and a storage medium. The method includes: a scanned texture image and a depth image corresponding to the texture image are acquired; the texture image is processed by a pre-trained mask region convolutional neural network to determine at least one region of interest on the texture image and category information and mask information of each of the at least one region of interest; the depth image is updated according to the category information and the mask information of each of the at least one region of interest to obtain a updated depth image; and a three-dimensional model corresponding to the updated depth image is constructed.

The present disclosure discloses a handheld scanner and a scanning method for the handheld scanner. The handheld scanner includes a texture camera, a first black-and-white camera and a second black-and-white camera, where the first black-and-white camera and the second black-and-white camera are spaced apart from each other; and the handheld scanner further includes a laser projector, and the texture camera and the first black-and-white camera are respectively arranged at two sides of the laser projector. When a highly reflective or dark object is scanned, textures are obtained by the texture camera while laser scanning is performed; and after point cloud fusion is completed, texture images are screened and fused according to a shooting angle and the highlight degree of the image, so that the overall texture image of point cloud is obtained.

Provided is a method and device for adjusting a dental model. The method includes: acquiring an initial edge line of a dental model to be adjusted (S 102 ); and adjusting at least part of the initial edge line to obtain an adjusted edge line (S 104 ).

The present disclosure discloses a color projection component, a fringe decoding method and device, a storage medium, an electronic device and a system. The color projection component is configured to project a color fringe pattern to a surface of a measured object, the color fringe pattern includes m periodically-repeated basic fringe sequences, and m is a positive integer. The basic fringe sequence includes k kinds of fringes different in color, and an n-bit fringe sequence composed of any consecutive n fringes is unique. A fringe sum l of the basic fringe sequences satisfies l≤l 0 , l 0 =k n , where k and n are both positive integers greater than or equal to 2. Accordingly, the periodically-repeated color fringe is utilized for implementing fringe encoding and corresponding decoding, thereby reducing the number of the fringe colors and the number of the fringes required for decoding, improving decoding stability, simplifying the structure, and improving the scanning efficiency.

The present disclosure discloses a three-dimensional scanning device, method and apparatus, a storage medium and a processor. The three-dimensional scanning device includes a projection device ( 10 ), configured to project a fringe-encoded image to a to-be-scanned object, wherein the fringe-encoded image includes a first fringe group; and a camera ( 12 ), configured to collect the to-be-scanned object to obtain a camera image, wherein the camera image is an image of the to-be-scanned object on an imaging plane of the camera, and the imaging plane includes a first imaging interval. When the to-be-scanned object is located within an effective depth-of-field (ΔL) range of the three-dimensional scanning device, an image of the first fringe group on the imaging plane is located within the first imaging interval, and only the first fringe group exists in the first imaging interval.