62 results about "Stereo imaging" patented technology

Three-dimensional outdoor positioning can be considerably enhanced by using various 3D imaging techniques, LiDAR ranging measurements of surrounding landmarks, and Inertial Measurement Units (IMUs) reaching accuracies in the centimetres range. These technologies, in conjunction with global navigation satellite systems (GNSS) such as GPS, GLONASS, Galileo, and BeiDou, provide autonomous geo positioning. It is crucial to acknowledge the constraints of dead reckoning, which may result in mistakes in positional precision. Integrating modern imaging and correction techniques can significantly improve the accuracy and dependability of outdoor localisation. The amalgamation of various 3D imaging methodologies with LiDAR enhancements improves the comprehension and ranging of the environment, tackling the difficulties presented by GNSS constraints. The integration of IMUs with satellite systems ensures the provision of continuous traveling positioning data, even in instances of obscured or faulty satellite signals. This comprehensive approach improves outdoor location precision and expands the use of these technologies across other domains, such as autonomous navigation, robotics, and geospatial analysis, resulting in more effective and dependable positioning solutions. The hardware system consists of a swarm of sensors, including GNSS, INS, IMU, LiDAR, stereo imaging, and RGB technologies, which are combined to generate three-dimensional colored representations of natural landscapes and urban environments. This system reconstructs topographical features, enabling detailed mapping and analysis. It produces comprehensive three- dimensional sensory data, including geo-location and POI identification, and incorporates advanced image processing techniques, such as edge detection, for precise spatial awareness and environmental understanding. The system is designed with a compact form factor, making it easily integrated into wearable devices and autonomous vehicles. The integration of these technologies forms a sophisticated network of swarm intelligence, crucial for autonomous vehicle positioning and navigation. Particle swarm optimization (PSO) is used to address non-deterministic navigation, with different coupling fusion methods available. The Neuro-fuzzy PSO AI Positioning and Navigation System generates three-dimensional sensory data, providing detailed information about geographical distribution and dead reckoning areas.

The invention relates to the technical field of regulating valve monitoring, in particular to a regulating valve opening degree monitoring method and system based on image recognition, and the method comprises the following steps: S1, constructing a composite optical mark: machining annular grooves and longitudinal convex ridges which are distributed in a staggered manner on the surface of a valve rod to form a composite mark belt; s2, anti-interference stereo imaging: collecting visible light and short wave infrared images to generate a fusion point cloud set; s3, dynamic shielding compensation: generating a three-dimensional point cloud model of a complete composite marking band; s4, thermal expansion decoupling calculation: visual displacement errors caused by thermal expansion are eliminated; and S5, time-space domain closed-loop calibration: reversely reckoning the opening value by using the structured light three-dimensional coordinate to carry out cross validation. According to the invention, high-precision, high-robustness and verifiability monitoring of the opening degree of the regulating valve is realized, and the measurement stability and engineering applicability under complex working conditions are effectively improved.

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 provides a dynamic polarization three-dimensional imaging system, which relates to the technical field of anti-counterfeiting encryption and comprises a light source, a polarization film and a color three-dimensional imaging module which are sequentially arranged along a light path, the light source is used for providing visible band incident light; the polarizing film is configured to transmit TM polarized light when rotating 0 degree and transmit TE polarized light when rotating 90 degrees; the color three-dimensional imaging module comprises a micro lens array, a transparent spacing layer and a micro image-text array which are sequentially arranged along a light path; the micro image-text array comprises a metal coating layer, a grating layer and a glass substrate which are stacked from top to bottom, wherein the grating layer forms a Fabry-Perot-like microcavity resonance structure; the polarization state of the incident light is switched by rotating the polarization film, so that the stereo image of the micro image-text array is dynamically switched among an appearing state, a hiding state or a color changing state. According to the invention, wide-color-gamut and dynamically-adjustable color stereo imaging is realized, and the complexity and the identifiability of anti-counterfeiting encryption are 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 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.

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.

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.

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.

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.

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

The invention relates to ground surface estimation using stereoscopic imaging for autonomous and semi-autonomous systems and applications. Embodiments of the present disclosure relate to surface estimation with stereoscopic imaging and surface disparity. For example, a three-dimensional (3D) surface structure may be modeled as a disparity field, and a surface disparity field representing a surface (e.g., ground) in an environment may be generated using a constrained non-linear hierarchical optimization that is used to process stereoscopic image data, such as stereoscopic image data. And iteratively refining the 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 various downstream tasks, such as obstacle detection, airworthiness space segmentation, self-motion refinement, and / or generation of an estimated surface profile.

The utility model discloses a calibration support suitable for a two-dimensional imaging light array probe. The calibration support is a calibration device suitable for particulate matter calibration of two-dimensional imaging light array probe equipment. The device is composed of an installation fixing frame, a supporting frame, an adjusting plate and a copper pipe. The installation fixing frame is formed by connecting and fixing two half-cross-shaped installation plates to the upper portion of the two-dimensional stereo imaging light array probe through bolts, and a stable base structure is formed. The supporting frame is of a double-supporting-column structure and is fixed to the installation fixing frame through a fastener, and the installation adjusting plate is connected with the supporting frame through a long groove hole and can be finely adjusted. The bottom end of the copper pipe extends to the position close to the center point of the diode linear array, the standard particle small balls are released through the copper pipe and penetrate through the diode linear array, the two-dimensional stereo imaging light array probe captures two-dimensional images of the standard particle small balls, and therefore accurate calibration of equipment is achieved. The device is simple in structure, convenient to operate, high in calibration precision, good in cost benefit and wide in application range.

The invention discloses a naked eye stereo imaging intelligent photo frame, and relates to the technical field of intelligent photo frames, the naked eye stereo imaging intelligent photo frame comprises a shell, one side of the shell is provided with a front shell, and the other side of the shell is provided with a rear shell; the display module is mounted in the shell; the adjusting assembly is installed in the shell and located on the periphery of the display module; the adjusting frame is fixed on the adjusting assembly; and the stereo imaging module is fixed in the adjusting frame and is arranged corresponding to the display module.

The embodiment of the invention discloses an immersive hardware and software path verification method and system. A specific embodiment of the method comprises the following steps: acquiring space calculation data, pose and gesture data and depth data according to a depth distance sensor, a 4K high-definition sensor, a graphic rendering workstation and an optical imaging projection lens included in a hardware layer; performing data processing and storage on the system data; in the functional layer, through verification demonstration of intelligent three-dimensional scene modeling and deformable three-dimensional scene projection presentation technology and verification demonstration of multi-breadth three-dimensional scene stereo imaging technology, high-precision simulation is carried out on the operation process of a hardware and software path. According to the embodiment, the hardware and software paths can be checked from multiple angles and multiple levels, potential problems are found in time, adjustment and optimization are carried out in time in the design stage, and therefore the test cost is reduced, and the verification efficiency is improved.

To provide an imaging system module with improved practicality.SOLUTION: An imaging system module includes a lens, a liquid crystal panel, and a cylindrical member that internally supports the lens and the liquid crystal panel. The liquid crystal panel forms a geometric pattern by controlling the voltage applied to the electrodes. The panel surface of the liquid crystal panel has a regular N-gon shape (N is a natural number of 4 or more). The geometric pattern includes a first aperture pattern and a second aperture pattern that can be used for stereo imaging. The first opening is formed in one of two regions sandwiching a specific circular region on the panel surface and separated by a distance longer than the diameter of the circular region, and the second opening is formed in the other of the two regions. The circular region has its center on the central axis of the cylindrical member and has the following diameter φ1. φ1=√2×r-2×d, where r: a radius inside the cylinder, d: the shortest distance from the edge of an array substrate to a circular electrode corresponding to the above circular area in terms of manufacturing design.SELECTED DRAWING: Figure 6

A personal eyewear device 100 and method are provided for obtaining eye tracking data of a wearer of the personal eyewear device 100. The personal eyewear device 100 comprises a frame 104, an electronics module 106 including a processor 110, a memory, a power source 112 for powering the electronics module 106, and an eye tracking subsystem comprising 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. An accelerometer and gyroscope may provide positional data.

The invention is applicable to the technical field of optical imaging, and provides a three-dimensional imaging optical system for a civil small unmanned aerial vehicle, which consists of a spherical positive lens, two groups of doublet spherical lenses, a diaphragm, a convex spherical reflector and a concave parabolic reflector, the two groups of doublet spherical lenses comprise a first doublet spherical lens and a second doublet spherical lens; according to the invention, high-resolution imaging can be realized under multiple wavelengths, rich spectral information is provided for a user, and more accurate analysis and judgment of a target area are facilitated. The compact design enables the system to be small in size and light in weight, is very suitable for being mounted on a low-altitude civil small unmanned aerial vehicle, and expands the application range and operation capability of the civil unmanned aerial vehicle. The three-dimensional imaging function can obtain three-dimensional information of a target area, has important application value in the fields of geographic surveying and mapping, urban planning and the like, and can provide more comprehensive and accurate data compared with a traditional imaging mode.

The invention belongs to the technical field of X-rays, and particularly relates to a three-dimensional image imaging method and system based on stereoscopic vision. The three-dimensional image imaging method based on stereoscopic vision comprises the following steps: respectively acquiring X-ray image groups of an X-ray source at different orientations of an object to be imaged; the number of the orientations is at least two, and the number of the X-ray images in the X-ray image group is at least two; performing stereo imaging preprocessing on each X-ray image group to obtain a stereo vision image at each orientation; and according to the relative positions between the X-ray source and the object to be imaged and between the X-ray source and the detector at each orientation, fusing each stereoscopic vision image to obtain a three-dimensional image. A stereoscopic vision imaging technology and a digital X-ray imaging technology are combined to obtain a stereoscopic vision image, then a plurality of stereoscopic vision images at different angles are combined to obtain a three-dimensional image, the number of exposure times needed when the three-dimensional image is established is small, and radiation can be effectively reduced.

The invention belongs to the technical field of remote image transmission, stereoscopic vision imaging and head-mounted display, and particularly relates to a remote real-time three-dimensional image transmission system and method based on double-camera stereoscopic imaging. And after dynamic calibration and parallax coding, the three-dimensional images are transmitted to a head-mounted display helmet through an extended communication protocol (such as Skype API), so that high-precision and low-delay remote interaction of the three-dimensional images is realized. The system solves the problem that traditional 2D transmission lacks depth information, and is suitable for scenes such as immersive remote cooperation and virtual reality social contact.

Systems and methods related to converting 3D point clouds to confidence-scored 3D grids for height mapping in stereo imaging systems are disclosed herein. A height map may be generated for a physical surface from a point cloud. The point cloud may be captured using a stereo camera system, where the point cloud comprises a list of three-dimensional coordinates for a set of points on the physical surface. A grid map may be generated from the point cloud, where the grid map comprises a set of centroid points with confidence scores for a set of voxels of the grid map. The height map may be generated from the grid map, where the height map comprises a set of height values derived using the set of confidence scores. The height map may have increased accuracy, for example by removing outliers and reducing noise.

The path planning method for a stereo imaging inspection machine for PCB boards includes the following steps: S1. First, analyze and process the dimensional data of the PCB board and the two camera lens modules, including equipment parameters and inspection board data; S2. Divide the inspection board into regions based on the two camera lens modules. Constrain the working range of the camera lens modules according to their size and travel range. Design an 8-region division method based on the hole position characteristics of the inspection board; S3. Establish an integer programming model for pairing and scheduling regional tasks of the two camera lens modules. Based on the division results of the 8 working regions, pre-allocate the inspection task groups of the two camera lens modules; S4. Use a single-region path planning algorithm, employing a variable neighborhood search algorithm to solve for the shortest path connecting all inspection holes in the current region for a single camera lens module. This solution aims to prevent collision and interference problems between the two sets of cameras when collaboratively imaging PCB boards using stereo cameras.

The invention relates to an X-ray three-dimensional imaging device which comprises an X-ray source, a first displacement table, a rotary table, a crystal rotary table, a crystal support, a crystal, a second displacement table, a sample support and a detector, the rotary table and the crystal rotary table are arranged on the first displacement table, the crystal support is arranged on the crystal rotary table, the crystal is fixed on the crystal support, and the second displacement table is arranged on the rotary table. The sample support is arranged on the second displacement table and used for fixing a sample, and the detector is located on the downstream of the crystal and the sample. According to the X-ray stereo imaging device, images of a sample at multiple angles can be acquired at a time, so that the data acquisition time is shortened, and the efficiency is improved.

A bioreactor system includes a housing configured to receive and support a container, a stereoscopic imaging device having first and second imagers secured to the housing, the stereoscopic imaging device configured to image surfaces of foam and liquid exposed to a headspace of the container. The system also includes a controller operatively connected to the stereoscopic photographing device, and the stereoscopic photographing device and the controller are configured to create an image of the exposed surface and identify foam on the surface based on the image.

The liquid crystal panel forms a geometric pattern by controlling the voltage applied to the electrodes. The panel surface has a shape of regular N-sided polygon (N ≥4). The geometric pattern includes a first aperture pattern and a second aperture pattern that can be used for stereo imaging. The first aperture is formed in one of the two regions on the panel surface that are spaced apart from each other by a distance greater than the diameter of a circular region, so as to interpose the specific circular region therebetween. The circular region has a center on the central axis of the cylindrical member and has the following diameter φ1. φ1=√2×r−2×d, where r: the radius of the inside of cylinder, d: the shortest distance from an end side of the array substrate to a circular electrode corresponding to the above circular area from a manufacturing design perspective.

The invention discloses a binocular camera module calibration method and system, electronic equipment and a storage medium, and relates to the technical field of camera calibration. According to the method, a test camera module is controlled to shoot multiple groups of calibration plate images at different preset positions, and parameters such as an internal reference matrix, a rotation matrix and a translation vector of a camera are iteratively solved through processing such as image segmentation, graying, angular point extraction and accurate positioning, so that a correction transformation matrix is generated to calibrate the test camera module; high-precision calibration of the binocular camera module is achieved, it is ensured that the optical axes of the two lenses are horizontally aligned, the precision of the distance between the lenses reaches the standard, and stereo imaging matching and biological characteristic collection accuracy are ensured. By implementing the technical scheme provided by the invention, the function stability and the performance consistency of the product can be improved, and the high requirement on the product performance in batch production can be met.

The invention relates to the technical field of underwater three-dimensional imaging and image processing, in particular to an underwater variable baseline three-dimensional imaging system, a noise removal method and an image enhancement method. The invention discloses an underwater variable-baseline stereo imaging system based on four cameras. The underwater variable-baseline stereo imaging system comprises a control cabin, a sliding rail and two binocular camera cabins, the two binocular camera cabins are assembled in parallel and collinear, one binocular camera cabin is fixed on the sliding rail, and the other binocular camera cabin is movably arranged on the sliding rail; and the distance between the two binocular camera cabins is adjustable. Through flexible calling of the four cameras, the problems of limited imaging visual field, accuracy change of fixed baseline length under different imaging distances, random noise interference under an underwater weak illumination condition and the like of a conventional binocular camera in practical application are solved, and estimation of water optical attenuation parameters is realized based on the system. And color compensation is carried out on the underwater image by using the parameter, so that the underwater imaging quality is improved.