198 results about "Stereoscopic imaging" patented technology

The invention focuses on enhancing indoor positioning and navigation through advanced synchronous fusion methodologies that integrate various technologies, including Inertial Navigation Systems (INS), Inertial Measurement Units (IMU), LiDAR, stereo vision, and Sonar. This comprehensive system aims to achieve high-precision data collection with centimeter-level accuracy, crucial for creating detailed three-dimensional indoor maps. A significant aspect of this innovation is its ability to address privacy concerns by incorporating measures that abstract sensitive segments of the environment when necessary, ensuring personal privacy is maintained during data collection. Additionally, the system tackles challenges such as voids in stereo imaging and temperature variations in ultrasound and LiDAR measurements through sophisticated algorithms and corrections, including back propagation techniques that utilize stereo depth data. By employing particle swarm optimization and Neuro-Fuzzy algorithms, the framework enhances the accuracy and reliability of navigation in complex environments, making it particularly beneficial for emergency responders and personal navigation in unfamiliar settings.

The invention belongs to the technical field of medical image assistance, and particularly relates to an auxiliary stereo imaging system and method for a complex chest trauma operation. By integrating multi-modal image data, real-time three-dimensional space capture, dynamic correction and risk score driven view adjustment, accurate assistance of the thymotomy operation process is achieved, the accuracy and safety of the operation are improved, the operation risk and operation difficulty are remarkably reduced, and the operation efficiency is improved. By acquiring and processing multi-modal image data in real time, a high-precision three-dimensional anatomical structure model containing thymus tissues, a blood vessel network and nerve distribution can be constructed, a visual surgical navigation view is provided for a doctor, meanwhile, a dynamic correction technology is adopted, thymus displacement parameters caused by thoracic cavity respiratory movement of a patient are monitored in real time, and the thoracic cavity of the patient can be accurately and accurately positioned. And on the basis, the real-time three-dimensional space data is dynamically adjusted, so that the spatial synchronization of the image data and the anatomical structure is ensured, and the navigation error caused by respiratory movement is effectively avoided.

The invention provides a power transmission line windage yaw galloping monitoring and three-dimensional imaging system based on a laser triangulation method, and relates to the technical field of laser ranging, and the system comprises a windage yaw galloping excavation assembly which is used for carrying out windage yaw galloping partition division and windage yaw galloping relation excavation; the windage yaw galloping monitoring module configuration assembly is used for configuring a windage yaw galloping monitoring module; the laser detection data determination assembly is used for determining laser detection data; the three-dimensional imaging module construction component is used for constructing a three-dimensional imaging module; the three-dimensional windage yaw galloping model determining assembly is used for determining a three-dimensional windage yaw galloping model; and the monitoring and early warning assembly is used for carrying out power transmission line monitoring feedback and windage yaw galloping early warning. The technical problems that the power transmission line windage yaw galloping monitoring precision is low and the three-dimensional motion information of the power transmission line cannot be accurately obtained can be solved, and the technical effects of improving the power transmission line windage yaw galloping monitoring precision and ensuring the accuracy of windage yaw galloping early warning by obtaining the dynamic three-dimensional image of the power transmission line are achieved.

The invention discloses a polarization spectrum modulation type multispectral stereo imaging method which solves the problem that in the prior art, an existing polarization spectrum imaging scheme does not achieve three-dimensional reconstruction of a target and achieves the purpose that the three-dimensional reconstruction of the target is not achieved under the condition that active illumination or special marks are not needed. Synchronous high-precision reconstruction of physical attributes and three-dimensional geometry of the surface of the target is realized; the method comprises the following steps: uniformly modulating polarization information and spectral information of incident light of a target through a three-way optical filter and a polaroid to obtain modulated incident light information; performing aliasing acquisition of a plurality of polarization spectrum components on the modulated incident light information through a multi-color detector combination to obtain aliasing light intensity; performing linear solution on the aliasing light intensity to obtain each polarization spectrum component vector, calculating the polarization degree and the polarization angle of each channel, and further deriving a surface zenith angle and an azimuth angle; reconstructing the three-dimensional morphology of each spectrum channel through normal gradient field frequency domain integration; and finally, fusing the multi-spectral three-dimensional data to obtain a multi-spectral three-dimensional imaging result.

Embodiments of the present disclosure relate to surface estimation using stereo imaging and surface disparities. For example, a surface disparity field representing a surface in the environment (e.g., the ground) may be estimated from stereo image data and used for various downstream tasks. For example, the difference between a stereo disparity field and a ground disparity field may be used to detect objects, a representation of a navigable space may be generated by radially casting 2D rays in the ground disparity field, the ground disparity field may be used to compensate ego-motion for high dynamic attitude changes, and / or the ground disparity field may be lifted to 3D and used to fit a surface profile to points sampled from the lifted point cloud.

Provided are a device and a method for multi-angle stereoscopic imaging measurement of precipitation particles, including an optical illumination unit used for illuminating a sampling space; a multi-angle imaging unit used for performing multi-angle imaging on the precipitation particles; a data acquisition control unit used for controlling the optical illumination unit and the multi-angle imaging unit; a data processing unit used for processing and displaying image data of the precipitation particles; and a protection unit used for protecting the optical illumination unit, the multi-angle imaging unit and the data acquisition control unit.

The invention discloses an indoor toxic and harmful gas three-dimensional imaging and tracing method and equipment, and the method comprises the steps: placing remote measurement instruments based on a laser detection principle at different corners in a room, obtaining the remote measurement data of each space layer at different scanning angles, and positioning a gas concentration high-value region; dense point locations are arranged in a gas concentration high-value area of each spatial layer, an in-situ measurement instrument based on a spectrum detection principle is utilized to measure and obtain in-situ data on the point locations, and meanwhile, extremely-high-resolution poisonous and harmful gas accurate traceability is realized; the two-dimensional distribution of the gas concentration of each space layer is obtained through remote measurement and in-situ data reconstruction, and is further mapped to a three-dimensional space to realize three-dimensional imaging and gas traceability. A wide-area light beam scattering gas telemetering instrument and a multi-pass reflection ultra-sensitive gas in-situ measuring instrument are autonomously designed, so that full-space rapid three-dimensional imaging and accurate traceability can be realized, system errors are reduced, an extremely low detection limit is achieved, and the feasibility, accuracy and high efficiency of the method are ensured.

The invention belongs to the technical field of medical images, and particularly relates to an anterior mediastinal surgery three-dimensional imaging method and system based on big data. According to the method, parallel preprocessing is carried out on the multi-modal medical image data through a distributed computing framework, the data processing speed and efficiency are effectively improved, through comparative analysis of different reference image data, an overlapping area and an independent area can be determined, corresponding partition processing is carried out on the overlapping area, and in the three-dimensional reconstruction stage, the three-dimensional reconstruction efficiency is improved. Three-dimensional reconstruction is respectively carried out on the independent region and the overlapped sub-regions, a three-dimensional image model of the independent region and a fused overlapped sub-region three-dimensional image model are generated, the spatial topological structure and the surface geometric characteristics of image data are fully considered, the accuracy of the reconstructed image is ensured, and in the image reconstruction stage, the image reconstruction efficiency is improved. And the three-dimensional image model of the independent region and the three-dimensional image model of the overlapped sub-regions are combined to generate a complete anterior mediastinal surgery three-dimensional image, so that a powerful guarantee is provided for accurate implementation of the surgery.

The invention belongs to the technical field of computer vision, and discloses an underwater binocular positioning method and system based on optical target prior constraint. The method comprises the following steps: establishing a binocular stereo imaging model considering camera distortion; the method comprises the following steps: constructing an image data set of an underwater prior optical target, extracting potential feature points through feature transformation identification, performing feature point matching on a denoised image in the image data set of the underwater prior optical target, and performing verification by using prior position information of an optical target point as a depth constraint condition. Eliminating wrong matching with overlarge position deviation in the matching feature points; and combining the projection position of the target to be measured with the prior projection position of the target to establish a re-projection error function, and iteratively optimizing the parameters of the binocular stereoscopic vision model by taking the collinear relationship generated by the optical target as a multi-target geometric constraint condition until the re-projection error meets the precision requirement. According to the method, the feature point identification and positioning precision of the underwater robot in a complex water body environment is improved.

The invention provides a dual-light fusion night vision device, which comprises a right display lens group, a left display lens group and a bridge frame assembly, the right low-light objective lens group is arranged on the right lens barrel along the right low-light optical axis; the infrared lens group is arranged on the right lens barrel along the infrared light axis; the left display lens group comprises a left lens; the left low-light objective lens group is arranged on the left lens barrel along the left low-light optical axis; the bridge assembly is connected with the right bridge interface piece and the left bridge interface piece in the mode that the right low-light optical axis is parallel to the left low-light optical axis. According to the invention, the right display lens group uses low-light and infrared fusion and has the advantage of dual-spectrum fusion imaging, and the right display lens group and the left display lens group are connected through the bridge assembly, so that the right display lens group has the advantage of stereo imaging and realizes a binocular stereo discrimination visual function.

The invention relates to a method for determining the position and / or orientation of tools of construction machines in a construction area, comprising the steps of: attaching at least one stereo camera to at least one construction machine or to a movable carrier, such that the stereo camera can detect at least one detection region within the construction area, preferably a working region of the construction machine, providing at least one reference point, the position of which is known relative to a predefined 3D world coordinate system and which can be recognised in the images of the stereo camera, in the detection region of the at least one stereo camera, calibrating the at least one stereo camera on the basis of the detection of the at least one reference point and triangulation in order to ascertain a transformation between the 3D world coordinate system and a 2D image coordinate system of the at least one stereo camera, preparing a virtual digital 3D terrain model of the construction area by means of digital image processing, in particular stereoscopy, and image recognition on the basis of the detection of the construction area by means of the at least one stereo camera, and representing predetermined working positions and detected actual tool positions and / or actual tool inclinations of the tool of the at least one construction machine in the virtual digital 3D terrain model.

The invention relates to a microlens array spherical aberration correction method based on a high-order linear ordinary differential equation. The problem that an existing microlens array spherical aberration correction method is poor in microlens array spherical aberration correction effect is solved. The method comprises the following steps: firstly, establishing a high-order linear ordinary differential equation used for describing a single-lens light propagation path in a micro-lens array, and introducing a non-constant coefficient function; based on a set initial condition and the obtained pixel initial coordinates of the element image array, solving a simultaneous equation of the light field space geometrical relationship and a high-order linear ordinary differential equation by utilizing a formulation reduced-order iterative numerical solution algorithm to obtain an aberration matrix of the element image array; and feeding back the aberration matrix to a spatial function of the element image array mapped to the light field, and changing the pixel horizontal coordinate and vertical coordinate positions of the corresponding element image according to the distance from the pixel point to the optical axis of the corresponding lens to complete the spherical aberration correction of the microlens array. According to the invention, the spherical aberration correction capability of the integrated imaging system can be improved, and the stereo imaging quality is improved.

Implementations are described herein for performing depth estimation in the agricultural domain, including generating synthetic training data. In various implementations, one or more three-dimensional synthetic plants may be generated in in a three-dimensional space, wherein the one or more three-dimensional synthetic plants include homogenous and densely-distributed synthetic plant parts. The plurality of three-dimensional synthetic plants may be projected onto two-dimensional planes from first and second perspectives in the three-dimensional space to form a pair of synthetic stereoscopic images. The first and second synthetic stereoscopic images of the pair may be annotated to create a mapping between the individual synthetic plant parts across the first synthetic stereoscopic images. A feature matching machine learning model may be trained based on the mapping.

A system for imaging an eye of a subject during a medical procedure includes: at least two image capture units for stereoscopic imaging of the eye of the subject configured to sense light at least in infrared (IR) and visible spectra, at least one IR light source, and at least one visible light source for illuminating the eye of the subject with light in the IR and visible spectra. The system is configured to output imagery data emanating from the at least two image capture units for displaying thereof. The system is configured to balance between visible and IR illumination from the visible and IR light sources by controlling their intensity.

The invention relates to the technical field of biomedical imaging, and discloses a photoacoustic-ultrasonic volume imaging method and system based on an annular ultrasonic array, and the method comprises the steps: reconstructing a two-dimensional photoacoustic image and a two-dimensional ultrasonic image; after photoacoustic imaging and ultrasonic synthetic aperture imaging of one imaging plane are completed, the annular ultrasonic array is moved in the direction perpendicular to the imaging plane, photoacoustic images and ultrasonic images of all the imaging planes are repeatedly executed on the next imaging plane, rebuilt and stacked, and a three-dimensional photoacoustic volume image and a three-dimensional ultrasonic volume image are formed; performing spatial pulse response deconvolution processing on the three-dimensional photoacoustic volume image; and fusing the processed three-dimensional photoacoustic volume image and the three-dimensional ultrasonic volume image to generate a three-dimensional bimodal volume image. According to the invention, high-time-resolution opto-acoustic-ultrasonic bimodal three-dimensional imaging is realized by using an annular ultrasonic array and motion scanning, and the high spatial resolution of the image is further ensured through a series of technologies.

Embodiments of the present disclosure relate to surface estimation using stereo imaging and surface disparities. For example, a three-dimensional (3D) surface structure may be modeled as a disparity field, and a surface disparity field representing a surface in the environment (e.g., the ground) may be generated using a constrained nonlinear hierarchical optimization to process stereo image data and iteratively refine estimated surface disparity values based on weights that guide the optimization to expected surface values (e.g., ground, road). The resulting surface (e.g., ground) disparity field may be used for a variety of downstream tasks, such as obstacle detection, segmentation of a navigable space, ego-motion refinement, and / or generation of an estimated surface profile.

A tomographic imaging system, methods to visualize tomographic images, and a ‎stereoscopic calibration procedure for obtaining two-dimensional cross-sectional ‎and three-dimensional volumetric images over the entire anterior eye. The optical ‎system combines stereoscopic imaging with patterned illumination (e.g., slit-‎scanning or array of slits). The captured cross-sectional images can be viewed ‎individually or as a fly-through video. The calibration and reconstruction methods ‎determine the true spatial location of imaged features and record a 3D volumetric ‎representation of the anterior eye. The system can image the entire anterior ‎chamber and contiguous structures, including the corneal limbus, sclera and ‎eyelids. Furthermore, the system can obtain corneal topography. ‎

A method for focusing a stereoscopic imaging system includes selecting a Region of Interest (ROI) of a stereo image. The stereoscopic imaging system includes a left-side camera generating a left-side image and a right-side camera generating a right-side image. The method includes adjusting a focus of the left-side camera and the right-side camera and comparing the left-side image and the right-side image within the ROI. The method includes setting the focus of the left-side camera and the right-side camera by processing a one of a disparity, similarity and high frequency content.

Examples relate to a system, to a method and to a computer program for an optical imaging system, such as a microscope, and to an optical imaging system comprising such a system. The system is configured to obtain stereoscopic image data of a scene from a stereoscopic imaging device of the optical imaging system. The system is configured to determine depth information on at least a portion of the scene. The system is configured to determine a scaling factor of an information overlay to be overlaid over the stereoscopic image data based on the depth information. The system is configured to generate a stereoscopic composite view of the stereoscopic image data and the information overlay, with the information overlay being scaled according to the scaling factor. The system is configured to provide a display signal comprising the stereoscopic composite view to a stereoscopic display device.

The invention discloses a photometric three-dimensional imaging method and a high-speed photometric three-dimensional imaging device, and relates to the technical field of industrial detection.Partition light sources which are evenly distributed are arranged in the vertical direction of a sample to be detected, and the partition light sources are correspondingly provided with area-array cameras and prime lenses; the partitioned light source comprises four light sources which are independently controlled, each light source is turned on / off under a set program during image acquisition, only one light source is turned on / off each time, and the other light sources are in opposite states, namely turned off / on; the method comprises the following steps: acquiring a sample image in the on / off state of each light source, combining and registering two images acquired in the on / off state of two light sources, then calculating a uniform illumination image and two primary difference images, and further calculating a pseudo depth image and a contour image. On the basis of five images obtained through processing, high-speed detection of a single sample can be achieved within 50 ms, and the detection requirement in an actual industrial scene can be better met.

This invention discloses a design method for a deep-sea in-situ fine-scale detection framework based on acoustic-optical remote sensing and VR technology. The main steps include: (1) studying the structure of the photon-counting lidar scanning system and the dynamic geometric relationship between the mother ship and the submersible, and constructing a calculation model for the lidar bathymetry point coordinates in the WGS84 spatial rectangular coordinate system; (2) considering the submersible's attitude, and based on the ray-tracking model and the geometric relationship between the mother ship and the submersible, constructing a calculation model for the multibeam bathymetry point coordinates in the WGS84 spatial rectangular coordinate system; (3) fusing the lidar and multibeam bathymetry points to construct a seabed topographic map; (4) proposing a development scheme and detection method for a deep-sea functional imaging spectrometer; and (5) constructing a VR environment for the deep-sea target survey area using a three-dimensional seabed topography model, rendering technology, and binocular stereo imaging technology. Through these steps, deep-sea in-situ fine-scale detection based on acoustic-optical remote sensing technology and the construction of a VR environment for the survey area can be achieved.

The utility model discloses an LED imaging prefabricated film and a stereo imaging LED screen, comprising a polarization laminated layer which is formed by stacking a first polarization film, a second polarization film and a first optical cement; the first polarizing film is provided with first through holes, the second polarizing film is provided with second through holes, and the first through holes and the second through holes are arranged in a staggered array. The array source consists of a first light source and a second light source which are arranged in a staggered manner; the first light source passes through the first through hole and is arranged on the second polarizing film; the second light source is emitted to the first polarization module and passes through the second through hole. The problem of adaptability of realizing a 3D imaging principle on the prefabricated film is solved, and transplantation of a polarization imaging effect is completed. The design of the LED screen assembly with the 3D imaging effect is completed, the technological structure is perfected in the process, and the complete imaging logic is determined through the screen architecture.

Systems and methods for calibrating a stereo imaging device are disclosed herein. An example implementation includes receiving, at a processor, a plurality of image pairs from a stereo imaging device, and for each image pair of the plurality of image pairs, computing a respective line delta value indicative of a deviation along a horizontal axis between a first image captured by a first sensor and a second image captured by a second sensor. The implementation also includes determining a median line delta value based on each respective line delta value and subsequently determining a respective set of disparities in one or more features in the first image and the second image based on the median line delta value. The method also includes computing a column delta value and calibrating the stereo imaging device using the median line delta value and the column delta value.

This disclosure provides a novel stereoscopic imaging technique that enables extremely large field-of-view data sets that can be displayed in stereo, such as over 270° horizontal and 180° vertical fields of view. Therefore, it is possible to record data that is larger than the user can visualize. In this way, the user can select which subset of the data set they wish to view. Head and eye tracking then provide a natural viewing experience for the user, allowing them to view and inspect the scene as if they were naturally present and viewing it in real time.

Light projection systems and methods may comprise combining light from two or more projectors. Each projector may be controlled so that the combined light output of the projectors matches a target for the projected light. In some embodiments optimization is performed to generate image data and control signals for each of the projectors. Embodiments may be applied in image projecting applications, lighting applications, and 3D stereoscopic imaging.

An intraoperative stereovision system has a stereo imager configured to provide stereo images at first and second time (iSV0, iSV(n)) to an image processor configured with a computerized mechanical model of a spinal column, the computerized mechanical model configured to model vertebrae as rigid, displaceable, bodies. The image processor is configured to extract an iSV0 surface model from iSV0 and an iSV(n) surface model from the iSV(n); to register these surfaces, and identify differences therefrom. The image processor is configured to adjust the computerized mechanical model according to the identified differences thereby causing the adjusted computerized mechanical model to track the iSV(n) surface model at each of multiple timepoints.

The present invention provides a method and system for optimizing stereoscopic endoscope imaging based on objective lens optics, which relates to the technical field of imaging optimization and includes: reading the device information of the stereoscopic endoscope, performing aberration analysis on the objective lens, establishing a set of response parameters, performing pre-acquisition of images in the target area, collecting the imaging of the objective lens, establishing pre-acquired images, performing feature recognition within the images, distributing the attention areas, reconstructing the light control parameters based on the depth identification and the regional features of the attention areas, performing imaging fitting with the light control parameters; performing parameter matching of the set of response parameters, generating optimized response parameters, performing imaging control, and configuring image adaptive enhancement parameters with the imaging fitting results; after enhancing the imaging results, performing image fusion to generate stereoscopic imaging. The present invention solves the technical problem in the prior art that the existing stereoscopic endoscope cannot accurately combine parameters and the environment, resulting in poor imaging effects during the process of imaging control.

The present invention provides a wear analysis method for a rigid contact network based on binocular vision. The method comprises: collecting contact line images of the rigid contact network on the top of the train and the top of the tunnel by two cameras; correcting the contact line image pair collected by the two cameras, and obtaining a disparity map of the corrected image pair by using a stereo matching algorithm; converting the disparity map into a depth map according to the principle of binocular vision stereo imaging, extracting the contact line part in the depth map, and performing three-dimensional reconstruction and visualization of the contact line part to obtain the wear characteristics and distribution of the rigid contact network. The present invention utilizes a three-dimensional map of the contact network surface and various types of wear disease curves to better describe the wear of the contact line surface and realize automated and intelligent detection of the rigid contact network.

The invention relates to the technical field of streaming media, in particular to a stereoscopic display electronic rearview mirror system based on eye tracking and a working method of the stereoscopic display electronic rearview mirror system. The system comprises an eye position calculation unit used for calculating eye coordinate parameters of a driver according to a driver seat image; the left and right eye image cutting unit is used for cutting the left eye stereoscopic vision image and the right eye stereoscopic vision image according to the eye coordinate parameters; the left eye and right eye image synthesis unit is used for synthesizing the cut left eye stereoscopic vision image and the cut right eye stereoscopic vision image into a synthesized image; and the three-dimensional imaging calculation unit is used for processing the synthesized image into a three-dimensional display format and outputting a three-dimensional visual picture through a connected three-dimensional display. By recognizing the spatial position of the eyes of the driver, the content captured by the camera outside the vehicle is cut to the rearview mirror picture suitable for the driver to watch, meanwhile, the stereoscopic display effect is achieved, the picture of the rearview mirror has depth information, and the driver can observe the rearview mirror easily and judge the distance conveniently.

The invention relates to an imaging device (10; 110; 210), in particular an endoscope device, comprising a shaft (12; 112; 212) that defines a longitudinal axis (14; 114; 214), and comprising a stereoscopy unit (16; 116; 216) for stereoscopic image generation. It is proposed that the stereoscopy unit (16; 116; 216) comprises a movement unit (20; 120; 220) for a mechanically effected change to a selection region (22, 22'; 122, 122'; 222, 222') from a field of view (24; 124; 224) of the stereoscopy unit (16; 116; 216) for image capture, wherein the stereoscopy unit (16; 116; 216) is configured to define the selection region (22, 22'; 122, 122'; 222, 222') for image capture for use in stereoscopic image generation as a function of a rotation parameter with respect to the longitudinal axis (14; 114; 214). Fig. 2