68 results about "Stereoscopic imaging" patented technology

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 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.

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.

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.

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.

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.

The application discloses a percutaneous needle type ultrasonic probe, which comprises a handle (1), an outer sleeve (2), a puncture tip (21) formed at the front end of the outer sleeve (2), an ultrasonic window (22) arranged at the side of the outer sleeve (2) close to the puncture tip (21), the outer sleeve (2) being provided with a first cavity (23) arranged along the axial direction, a rotating shaft (3) arranged in the first cavity (23), an ultrasonic assembly (4) arranged at the front end of the rotating shaft (3) and corresponding to the position of the ultrasonic window (22) when arranged in the first cavity (23), and a rotating mechanism (5) for driving the rotating shaft (3) to rotate and thus driving the ultrasonic assembly (4) to rotate, wherein the rotating mechanism (5) is arranged in the handle (1). The percutaneous needle type ultrasonic probe can directly penetrate into tissues through skin, obtain high-resolution ultrasonic images, and generate two-dimensional and real-time three-dimensional stereoscopic images through multi-angle rotation, thereby providing accurate ultrasonic guidance for diagnosis and interventional treatment, and being suitable for precise treatment operations such as tumor ablation, drug delivery and energy delivery.

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 application discloses a modular multi-channel ultrafast framing camera and a multi-pulse laser combined imaging system, and relates to the technical field of ultrafast imaging and photoelectric measurement. The camera comprises a common-aperture framing optical assembly, a double-camera assembly and a total electronic control assembly, can be combined to realize single-view four-channel eight-framing imaging, can be split to realize double-view four-framing stereoscopic PIV imaging, and the double assemblies share a total electronic control unit. The laser system comprises two multi-pulse lasers, a synchronous control module and a beam combination unit, can be combined to form eight-pulse illumination, or independently output adaptive double-view illumination. The imaging system takes laser as a time sequence main source, is synchronized with the camera at the nanosecond level, and a single-frame ultra-short exposure can freeze a high-speed transient process. The application is convenient to switch between double modes, efficient to deploy, does not need to repeatedly purchase hardware, has a high cost performance, and is suitable for high-precision measurement of high-speed supersonic flow and other transient processes.

A three-dimensional display method for video conference and the video conference system are provided. The three-dimensional display method includes the following steps. A first electronic device generates an image. The first electronic device encodes a hidden watermark in the image. The first electronic device transmits the image to a second electronic device. The second electronic device displays the image in a window of a display frame. The second electronic device searches for a rectangular box on the display frame. The second electronic device determines whether the hidden watermark is decoded in the rectangular box. If the hidden watermark is decoded in the rectangular box, the second electronic device performs a stereoscopic imaging process for the content of the rectangular box.

Approaches presented herein provide for the testing of imaging algorithms and systems. In at least one embodiment, a stereoscopic test pattern can be obtained that includes a number of features that vary in width and separation, such as may comprise a set of radial elements that converge toward a center point. A stereoscopic image of an instance of the pattern can be analyzed, such as at a set of radial positions, to make various measurements, including a limit on the ability to distinguish between different features. A pair of synthetic images of the pattern can be generated in order to test aspects of a stereoscopic algorithm used to generate stereoscopic images, with such testing being separate from the physical system, and a physical object can be generated that includes a representation of the pattern in order to be able to test the physical stereoscopic imaging system.

The present application relates to the field of 3D stereoscopic imaging. Disclosed are a parallax stereoscopic imaging method and a device. The method comprises: splitting any 3D video image in a target 3D video image set into two video images according to a left-right format or an up-down format; adding different marks to the two video images so as to obtain a marked-image group; and on the basis of a vertical synchronization signal of a screen of a display device, refreshing the marked-image group corresponding to each 3D video image in the target 3D video image set at a preset frequency, and simultaneously displaying same on the screen of the display device, wherein the two marked video images in the same marked-image group form a parallax effect on the screen of the display device, thereby realizing 3D stereoscopic imaging. The present application can realize parallax stereoscopic imaging, and can be applied to display devices without a 3D function.

The invention relates to a floating three-dimensional display device. The device comprises a plurality of floating display modules, each floating display module comprises an image processor, and the floating display modules are adjacently arranged; wherein each image processor provides three-dimensional image data to each floating display module; wherein the three-dimensional image data are respectively generated in response to different simulation view angle ranges of the reference image data; each floating display module projects a stereoscopic image in the stereoscopic display space according to each stereoscopic image data; wherein the overlapped part of each three-dimensional display space forms a three-dimensional imaging space, so that each three-dimensional image is overlapped in the three-dimensional imaging space to form a floating three-dimensional image.

The invention discloses an injection and detection separated coal fire crack recognition plugging method and plugging system, and relates to the field of coal field drilling and coal field fire area governance. The plugging method comprises the steps that a drilling network is formed for coal fire area construction, observation holes are selected for combined electro-magnetic scanning, and data vectors before and after tracing medium injection are obtained; reconstructing the three-dimensional conductivity and magnetic conductivity distribution of the underground crack, obtaining the three-dimensional space distribution of the crack, and determining the grouting amount of the tracing plugging material; according to the system, heat dissipation drilling, crack recognition, plugging and depth control are integrated, and the whole process of high-temperature hole forming, tracing injection, electromagnetic scanning, inversion imaging, targeted grouting and effect verification is completed. According to the method, conductivity and magnetic conductivity two-parameter joint inversion is realized, the problems that natural geological anomalies and crack channels cannot be distinguished through single electrical method / magnetic method detection, the number of inversion result false anomalies is large and the like are solved, true three-dimensional and high-resolution stereo imaging of crack space distribution and connectivity is realized, and a high-precision target spot is provided for targeted grouting.

The utility model discloses a kind of mould surface defect rapid detection devices, including workbench, mould fixing mechanism, elastic clamping component, multi-camera vision system and protection mechanism.The linear slide of workbench is cooperated with servo motor drive ball screw, and mould fixing mechanism is accurately positioned;U type clamping groove both sides are set with movable clamping block with wedge-shaped guide surface, and controllable clamping is realized by adjusting screw and belleville spring;Multi-dimensional adjustment industrial camera is installed on three columns, and optical axis converges in mould center;Transparent protective cover is driven by cylinder to form closed detection chamber.The device is exposed by high-precision displacement synchronous camera, combined with multi-angle stereoscopic imaging, realizes mould surface defect rapid nondestructive testing, and detection efficiency is improved by 3 times, and clamping damage rate is less than 0.5%.

An ultra-wide angle ophthalmic imaging scanner is provided.SOLUTION: An ultra-wide-angle ophthalmic imaging scanner includes a rotatable mirror for scanning a light beam over a fundus via an elliptical mirror having the rotatable mirror at a first focus and a pupil of an eye at a second focus, a stereoscopic imaging device for acquiring a stereoscopic image of the pupil via the rotatable mirror and the elliptical mirror, and a processor for controlling the stereoscopic imaging device to acquire the stereoscopic image via the rotatable mirror and the elliptical mirror when the rotatable mirror is in a predetermined orientation, and for processing the stereoscopic image to generate an alignment signal to an imaging location of the pupil for ultra-wide-angle image acquisition of the fundus. The processor then controls the imaging scanner to scan the beam on the fundus via the elliptical mirror by rotating the rotatable mirror to obtain an ultrawide-angle image.SELECTED DRAWING: Figure 1

The present invention relates a stereo depth camera and in particular to a stereo depth camera based on multiple detectors configured as event sensors and at least one illumination source oriented by 1-axis or 2-axis high-speed scanning for operation in optically clear to contaminated environments. A stereo depth camera (100) according to the present invention comprises an illumination unit (10) including a first illumination source (12-1) for emitting a first light beam, wherein the illumination unit (10) is configured for actively steering the first light beam to a first measurement position (P) in a surrounding of the stereo depth camera (100) within the field of view of the illumination unit (10); an imaging unit (20) including at least two detectors (22-1, 22-2) for detecting the first light beam reflected by a first object point at the first measurement position (P), wherein the detectors (22-1, 22-2) have different alignments and are configured to image a common field of view to enable stereoscopic imaging of the first object point; wherein the detectors (22-1, 22-2) include multiple pixels (S1, S2) that are configured as event sensors sharing a predefined pixel threshold trigger setting and which are adapted to collect multiple depth points from the first object point at the first measurement position (P) during a predetermined time interval Δt, wherein statistical analysis, filters, deep learning or machine learning algorithms, and / or a trained AI-model are applied to the collected depth points for determining and outputting the most probable distance of the first object point as pixel depth value for the first measurement position (P).

The invention relates to a patient alignment system for an ophthalmic imaging instrument. An ultra-wide field ophthalmic imaging scanner includes a rotatable mirror that scans a fundus with a beam of light via an ellipsoidal mirror having the rotatable mirror at a first focal point thereof and a pupil of the eye at a second focal point thereof; the stereoscopic imaging device is used for acquiring stereoscopic images of pupils through the rotatable reflecting mirror and the ellipsoidal mirror; and a processor that controls the stereoscopic imaging device to acquire a stereoscopic image via the rotatable mirror and the ellipsoidal mirror while the rotatable mirror is held in a predetermined orientation, and processes the stereoscopic image to generate a signal for aligning the pupil with an imaging position for acquiring an ultra-wide field image of the fundus. The processor then controls the imaging scanner to acquire an ultra-wide field image by rotating the rotatable mirror to scan with the light beam on the fundus via the ellipsoidal mirror.

The invention discloses a stretchable super-structure lens with an adjustable focus and high infrared band focusing efficiency based on a particle swarm optimization algorithm. The stretchable metamaterial lens is composed of periodic structures, each periodic structure comprises a substrate (1), and a plurality of metamaterial lens basic unit structures (2) are stacked on the substrates (1). The substrate (1) is made of a stretchable material PDMS, and the meta-lens basic unit structure (2) is made of a GaN material. The super-structure lens is simple in structure, simple in preparation process and low in material cost, the super-structure lens achieves the stretchable effect with the period ranging from 450 nm to 650 nm within the wave band of 780 nm to 880 n, the obtained focal lengths are 50.38 microns, 69.05 microns, 88.45 microns, 107.34 microns and 130.03 microns respectively, and the expected target focal length can be well achieved. Under the wave band of 780 nm to 880 nm, incident light of different wavelengths can be concentrated on one point, the super-structure lens shows good focusing performance, the super-structure lens can reach the focusing efficiency of 60% or above within the wave band of 780 nm to 880 nm, and the super-structure lens has a great progress space compared with an existing stretchable super-structure lens; the focus-adjustable stretchable super-structure lens provides an effective method for application of stretchable devices, and provides a new direction for design of future super-structure lenses, such as application in next-generation three-dimensional imaging, holographic projection and astronomical telescope systems.

The invention provides a display panel and a display device.The display panel comprises a substrate, a pixel array located on one side of the substrate and an optical element layer arranged on the light emitting side of the pixel array, and the pixel array comprises a plurality of pixel units; the optical element layer comprises a plurality of optical units which are periodically arranged along a first direction; the orthographic projection of each optical unit on the pixel array covers at least one pixel unit. In the first direction, each optical unit has a first optical period P; the width of the effective light-emitting area of the pixel unit is L, and L is smaller than P. By limiting the pixel units in the coverage area of the optical units, the number of the pixel units between the adjacent optical units is reduced, and the arrangement density of pixels can be remarkably reduced while stereoscopic vision imaging is ensured, so that the driving cost and the system power consumption are reduced, and the effective light utilization rate of the system is improved; therefore, the display performance and the system economy are both considered.

The present application belongs to the technical field of medical image auxiliary, and specifically relates to a complex chest trauma surgery auxiliary stereoscopic imaging system and method. The present application realizes accurate assistance to the thymus resection surgery process through integration of multi-modal image data, real-time three-dimensional space capture, dynamic correction and view adjustment driven by risk score, not only improves the accuracy and safety of the surgery, but also significantly reduces the surgery risk and operation difficulty. Through real-time acquisition and processing of multi-modal image data, a high-precision three-dimensional anatomical structure model containing thymus tissue, blood vessel network and nerve distribution can be constructed, providing an intuitive surgery navigation view for doctors. Meanwhile, a dynamic correction technology is adopted, the thymus displacement parameters caused by the respiratory movement of the patient's chest cavity are monitored in real time, and the real-time three-dimensional space data is dynamically adjusted based on the parameters, ensuring the spatial synchronization of the image data and the anatomical structure, and effectively avoiding the navigation error caused by the respiratory movement.

This invention discloses a stereoscopic imaging device, including a light source, a control mechanism, and a light-transmitting sheet. The light-transmitting sheet is coupled to the control mechanism and disposed on one side of the light source. The light-transmitting sheet includes a first pattern area and a second pattern area, and the control mechanism is used to control the light-transmitting sheet to generate displacement, so that light from the light source is received by the first pattern area or converted to light from the light source being received by the second pattern area, thereby displaying different stereoscopic images.

This invention discloses a method for generating micro-image arrays for spatial stereoscopic imaging and an optical imaging thin film. The method incorporates processing resolution and observation conditions as constraints during the design phase. First, it determines the achievable minimum period difference and effective imaging height range. Then, within this range, it performs a grayscale-to-height mapping, converting continuous height variations into a processable discrete periodic distribution. Simultaneously, while generating the stereoscopic height through periodic offset, a discrete scaling factor is introduced to compensate for differences in imaging magnification. This method links position adjustment and size scaling during micro-image generation, allowing the scaling to change with the discrete periodic distribution. Therefore, the image proportions of different height layers are more easily maintained closely, the distortion caused by local size inconsistencies is less pronounced, and the overall stereoscopic image's proportions and edge transitions are more natural.

The invention discloses a spacer column supporting substrate, a three-dimensional imaging device and a liquid crystal three-dimensional display. The spacer column supporting substrate comprises a first substrate; the plurality of spacing columns are positioned on one side of the first substrate and are randomly distributed based on a rule. The stereoscopic imaging device adopting the spacing columns to support the substrate enables the display effect of a liquid crystal display to be uniform.

[Problem] To provide an imaging device that can perform good entire-periphery stereoscopic imaging. [Solution] Provided is an imaging device wherein first pairs of optical systems, each constituted by a first optical system Rj and a second optical system Lj, are disposed so as to be respectively positioned at the vertices of a polygon having five or more sides. When IPD is defined as the distance between respective surface vertices of optical surfaces furthest to the object side of a first optical system and a second optical system which constitute a second pair for stereoscopic imaging and which are a different combination than the first pairs, and NPD is defined as the distance between respective surface vertices of optical surfaces furthest to the object side of either the first optical systems or the second optical systems of two first pairs of optical systems that are adjacent in the peripheral direction of the polygon, the expression 0.01≤NPD / IPD≤0.70 is satisfied.

Provided is a stereoscopic imaging device including a light source, a control mechanism, and a light-transmitting plate. The light-transmitting plate is coupled to the control mechanism and positioned at one side of the light source. The light-transmitting plate includes a first pattern area and a second pattern area, and the control mechanism is configured to control displacement of the light-transmitting plate, allowing the plate to either receive light from the light source via the first pattern area or switch to receiving light through the second pattern area, thereby displaying different stereoscopic images.