168 results about "Stereoscopic imaging" patented technology

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 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.

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 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.

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.

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.

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 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

The application discloses a non-blind area panoramic annular stereoscopic imaging lens, which comprises lenses L1, a panoramic annular lens L2 and a rear lens group G3 arranged in sequence along an optical path direction and arranged along an optical axis; the L2 comprises a front transmission surface R3 and a front reflection surface R4 on a subject side; and the L2 comprises a central transmission surface R5 and a polarization light splitting half-reflection half-transmission surface R6 on an image side; the L1, the L2 and the G3 form three channels; a field of view range of a front channel is 0~alpha, and light rays pass through the L1, the R3, the R5 and the G3 in sequence to reach an image plane; a field of view range of a panoramic channel is alpha~beta, and light rays pass through the R3, the R6, the R4, the R5 and the G3 in sequence to reach the image plane; a field of view range of a stereoscopic imaging channel is gamma~theta, and 0<gamma<theta<beta, light rays pass through the R3, the R6 and the G3 in sequence to reach the image plane to form a stereoscopic vision image. The application has no central blind area, has a large stereoscopic imaging field of view, can realize single-lens stereoscopic imaging in a visible light range and has a simple head structure.

The invention provides an electronic device, a display device and a stereo imaging method thereof. The electronic device comprises a display unit, an input unit, an artificial intelligence frame filling model, a detection unit and an imaging unit. The input unit is used for obtaining a first original image and a second original image. The first original image is shot at a first angle, and the second original image is shot at a second angle. The first angle is different from the second angle. The artificial intelligence frame filling model is used for generating a plurality of frames of intermediate generation images. The detection unit is used for detecting a viewing angle of a user relative to the display unit. The imaging unit is used for displaying one of the first original image, the plurality of intermediate generated images and the second original image on the display unit according to the viewing angle.

The invention provides a stereoscopic display method for a video conference and a video conference system. The stereoscopic display method of the video conference comprises the following steps. A first electronic device generates an image. The first electronic device encodes a hidden watermark into an image. The first electronic device transmits an image to a second electronic device. The second electronic device displays the image on a window of a display picture. The second electronic device searches a rectangular frame on the display picture; the second electronic device determines whether the hidden watermark is decoded in the rectangular frame. If the hidden watermark is decoded in the rectangular frame, the second electronic device performs stereo imaging on the content of the rectangular frame.

The application is suitable for the field of optical imaging technology, and provides a stereo imaging optical system for civil small unmanned aerial vehicle, which is composed of a spherical positive lens, two groups of double cemented spherical lenses, an aperture, a convex spherical mirror and a concave parabolic mirror, wherein the two groups of double cemented spherical lenses include a first double cemented spherical lens and a second double cemented spherical lens; the application can realize high-resolution imaging at multiple wavelengths, provide rich spectral information for users, and help to more accurately analyze and judge the target area. The compact design makes the system small in size and light in weight, and is very suitable for being mounted on low-altitude civil small unmanned aerial vehicle, thereby expanding the application range and operation ability of the civil unmanned aerial vehicle. The stereo imaging function can obtain three-dimensional information of the target area, and has important application value in the fields of geographic mapping and city planning, and can provide more comprehensive and accurate data compared with the traditional imaging mode.

A personal eyewear device comprises: a frame for supporting one or more lenses in front of a left eye and a right eye of a wearer when the personal eyewear device is worn by the wearer and an electronics module. The electronics module includes: a processor, a memory, a power source for powering the electronics module, and an eye tracking subsystem, wherein the processor and the memory are communicatively coupled with the eye tracking subsystem and wherein the eye tracking subsystem comprises: a first pair of imaging sensors forming a first stereo imaging sensor configured to capture images of a left eye of the wearer; and a second pair of imaging sensors forming a second stereo imaging sensor configured to capture images of a right eye of the wearer. The device further includes at least one additional sensor subsystem and a scheduling module.

The invention provides a monolithic integrated binocular 3D imaging chip structure. The monolithic integrated binocular 3D imaging chip structure comprises an image sensor chip, a first lens and a second lens, the image sensor chip comprises any one of a CMOS (Complementary Metal Oxide Semiconductor) image sensor, a CCD (Charge Coupled Device) image sensor, an organic matter image sensor, a quantum dot image sensor and an infrared image sensor; the image sensor control circuit is arranged between the first pixel array and the second pixel array, or is arranged in an area with a preset distance on the periphery of the first pixel array or the second pixel array, or the image sensor control circuit is arranged below the pixel array by adopting a BSI stacking process. A binocular 3D imaging function is realized by utilizing one chip, the cost is low, auxiliary equipment such as a specific light source is not needed, the device is simple, the area is small, the power consumption is low, stereo imaging is carried out by utilizing a disparity map principle, two images are simultaneously acquired, and the accuracy is high.

Systems and methods for self-calibration of a stereo system without prior knowledge of the scene are disclosed herein. For example, a method for calibrating a stereo imaging system may comprise extracting a set of feature points from a first image captured from a first view of a stereo image and a second image captured from a second view and matching the set of feature points between the two images to form a list of matched points. The method may also comprise iteratively adjusting a tilt calibration value (Rx) and a roll calibration value (Rz) based on a y-dimension parallax value in the list of matched points, determining a set of x-dimension parallax values for the set of feature points, and adjusting a convergence calibration value (Ry) of the stereo imaging system. The method may be performed while the system is in operation without the need for a special calibration setup.

This invention discloses a portable binocular stereoscopic imaging device based on a single camera, applicable to the field of medical aesthetics. The device comprises an image acquisition component, a supplementary lighting component, and a laser locator. The image acquisition component receives images of the subject reflected from optical paths in two directions, thereby performing 3D modeling. The supplementary lighting component has a mirror angle identical to that of the image acquisition component, ensuring the supplementary lighting angle matches the shooting angle, allowing for uniform illumination of the subject, enhancing lighting, and eliminating shadows. The laser locator allows for adjusting the angle of the laser emitter to set different shooting distances for different subjects. This invention achieves single-camera binocular stereoscopic imaging while not only providing more uniform supplementary lighting but also enabling more convenient adjustment of the shooting distance.

To provide a stereo imaging system which remotely obtains an imaging range and an imaging distance, and can precisely and accurately perform stereo imaging, at a position away from an operator operating a stereo camera in a narrow space such as the top of a steel tower.SOLUTION: An operator A carries a stereo imaging device 50 which includes a center unit 80 having digital cameras (90, 100) at right and left sides, and a center digital camera 81 and distance sensors (82, 84) at the center. An operator B at a remote position carries a tablet 200 so as to perform shutter photographing with the tablet 200.SELECTED DRAWING: Figure 1