51 results about "Stereo imagery" patented technology

The invention provides an urban area-oriented multi-source remote sensing data joint positioning method and system, and the method comprises the steps: obtaining a plurality of optical stereoscopic images and corresponding connection point data, constructing an optical stereoscopic block, and extracting laser elevation control point data and digital surface model data in the range of the optical stereoscopic block; calculating a ground coverage range of a plurality of optical stereoscopic images, mapping the ground coverage range to a grid unit by adopting a grid lookup table, obtaining a laser point accurate image space coordinate by combining the screened laser elevation control point data, and outputting a laser elevation control point set; calculating a laser elevation control point set based on a rational function model and affine transformation, and constructing a multi-source remote sensing data joint adjustment function model; and resolving the multi-source remote sensing data joint adjustment function model to form an observation error equation, performing heuristic search solution on the observation error equation, and outputting an adjustment model parameter result and a final connection point ground coordinate.

The invention provides a three-dimensional image modeling method and device based on plane data, and the method comprises the steps: carrying out the full-color / multispectral band fusion, bit depth adjustment, thin cloud removal, image enhancement, stripe removal and light and color uniformity of a satellite surveying and mapping image, and achieving the real color recovery of the image; performing splicing preprocessing on the plurality of small orthographic satellite surveying and mapping images after real color recovery, performing image registration on the to-be-registered image and a reference image, performing image geometric correction on the registered image, and performing image mosaic processing on the plurality of images after image geometric correction to obtain a single large-scene image; and three-dimensional image matching, building mask extraction, three-dimensional building modeling and three-dimensional building post-processing are carried out on a single large scene image to obtain a three-dimensional digital surface model, and ground three-dimensional real image modeling is completed. By applying the technical scheme of the invention, the technical problem that the existing two-dimensional surveying and mapping data is difficult to meet the increasing application requirements of three-dimensional scenes is solved.

The invention discloses a glacier mass balance calculation method for generating an elevation time sequence based on ASTER stereo data. The glacier mass balance calculation method comprises the following steps of: 1, collecting a glacier ASTER L1A stereo image and preprocessing the glacier ASTER L1A stereo image; 2, the quality of the ASTER stereoscopic image pair is improved through radiation correction and strip removal processing; 3, calculating a rational polynomial coefficient RPC model of the ASTER stereo image pair, and detecting and correcting a jitter error of a satellite in a vertical orbit direction; 4, performing residual deviation correction by using the reference ASTER DEM data; 5, high-precision ASTER DEM data are obtained through abnormal value filtering; 6, generating time-continuous ASTER DEM data by adopting a Gaussian process regression method; and 7, calculating the volume change of each glacier, and polymerizing the volume change of each glacier to obtain the overall mass balance change of the regional glacier. According to the method, high-precision and time-continuous ASTER DEM data are generated through correcting satellite jitter errors by a system, and abnormal value filtering and statistical aggregation are combined, so that the mass balance change of the large-scale regional glacier is accurately calculated.

The invention relates to the technical field of geographic information data processing, in particular to a low-altitude unmanned aerial vehicle flying building height rapid measurement method, which comprises the following steps: acquiring satellite stereoscopic image data and ground control point data in a task area, and performing aerial triangulation according to the data to obtain a measurement result; generating dense point cloud data of the operation area according to a measurement result; performing feature extraction on the satellite stereoscopic image data and the dense point cloud data to obtain feature results, fusing the feature results by using a predefined deep learning model, and automatically classifying the point cloud data; extracting ground point layer height information and building point layer height information from the point cloud data according to building contour and roof structure characteristics; and finally determining the height of the building according to the building point floor height information and the ground point floor height information. According to the invention, multi-source data and an intelligent algorithm are fused, efficient and accurate building height measurement is realized, and key data support is provided for flight of the low-altitude unmanned aerial vehicle.

The utility model discloses a 3D projection lamp, and relates to the technical field of projection lamps. Comprising a projection lamp body, the projection lamp body comprises a lamp shell, an angle-adjustable base is arranged at the bottom of the lamp shell, a lamp assembly is arranged in the lamp shell, and the lamp assembly comprises a lamp panel. Through the optical combination that the film main body is matched with the double-arc-shaped lens and the six-in-one lens, multi-angle light splitting and dynamic refraction are achieved, a three-dimensional image can be presented without wearing 3D glasses, the LED lamp beads, the first arc-shaped lens, the film main body, the second arc-shaped lens and the lens main body are coaxially designed, the light path alignment precision is ensured, image distortion is eliminated, and the image quality is improved. The base can be directly placed in flat areas such as a table top, a floor or a windowsill through the base body, the surface of a carrier does not need to be damaged, the base is suitable for indoor exhibition halls and cafes needing temporary setting, wind power and external force shaking are resisted by inserting the ground insert into soil or lawns for use, and long-term stable projection of outdoor courtyards, gardens and other scenes is ensured.

The invention discloses an image partition backlight naked-eye stereoscopic image display device which is suitable for being matched with an imaging half-reflecting mirror for use, a display comprises a main display module and a shading module, the light-in side or the light-out side of the main display module is overlapped with the shading module, the display is divided into a plurality of blocks and switched in a time-sharing mode, and the display is matched with a backlight source for corresponding switching. Therefore, the effect of image partition display is achieved, the problems of ghosting and crosstalk caused by insufficient response speed of the main display module when left and right eye parallax images are quickly switched are solved, and the brightness of image watching can be adjusted by changing the display time of the display blocks.

The present application relates to the field of space photogrammetry and water conservancy surveying and mapping technology, and particularly relates to a Gao Fen 7 satellite water conservancy stereoscopic mapping and three-dimensional modeling method and system, comprising: using a water conservancy facility topology characteristic quantitative evaluation model to screen the same-track stereo images, and performing same-track stereo image splicing and fusion based on river linear topology, reservoir area surface topology and canal system node topology; dividing terrain subareas and establishing a terrain slope and RPC parameter correlation correction model. The present application takes water conservancy facility topology characteristics as the core driving force, runs through the whole process of image preprocessing, space three solution, image control layout, point cloud processing and three-dimensional modeling, replaces the precision control role of traditional dense image control points through topology constraint, solves the problems of insufficient image control precision, high image control point layout cost and low large scene modeling efficiency of existing satellite stereoscopic mapping in complex water conservancy topography, and realizes efficient and high-precision application of Gao Fen 7 satellite images in water conservancy engineering surveying and mapping.

The present application belongs to the field of surveying and mapping, and more particularly relates to a method for combined adjustment of island and reef images and laser height measurement under water edge line constraint. The present application comprises the following steps: S1, input of multi-source satellite data; S2, extraction of water edge line points; S3, extraction of photon points; S4, preparation for combined adjustment, including S41, stereo image preprocessing, S42, generation of water edge line height control points, and S43, generation of laser point height control points; S5, combined adjustment and compensation, comprising S51, combined adjustment, and S52, affine transformation compensation on the adjustment result. The present application introduces elevation constraints such as water edge line and fuses spaceborne laser height measurement data to construct multi-source height control points, realizes high-precision three-dimensional mapping of sea reef areas under the condition of no ground control, and thus more efficiently and stably solves the mapping problems of difficult acquisition of field control points, insufficient precision of open source DEM, and uneven distribution of laser points.

This invention provides a binocular high-resolution digital imaging real-time stereoscopic vision microscope system, comprising a binocular microscope body (consisting of a binocular zoom parfocal optical path and a microscope magnifying objective camera), a binocular imaging subsystem, and a stereoscopic image display. The binocular imaging subsystem includes: an image projection correction calculation module, which acquires original left and right image data through the binocular microscope body, performs manufacturing parameter consistency correction and image projection correction on the original left and right image data, and obtains a projection distortion-corrected image; and a stereoscopic image output calculation module, which, based on the distortion-corrected image, performs photographic spatial projection position and attitude correction to obtain a large depth-of-field digital stereoscopic image, and transmits the ultra-depth-of-field digital stereoscopic image to the stereoscopic image display for real-time display. This invention can obtain nanometer-level sampling resolution digital images, eliminate image projection distortion caused by manufacturing and installation errors of the microscope body, and achieve high-resolution, high-magnification microscopic stereoscopic image observation.

The application provides a monocular high-resolution digital image stereovision microscope system, and relates to the technical field of stereovision microscopes. The system comprises: a computer photography control subsystem which controls a microscope body to complete zoom parfocal focusing and drives a sample platform to move a set baseline distance in the horizontal direction. The microscope body is photographed before and after movement to generate overlapping first digital left images and second digital right images to construct a stereoscopic image pair. A computer calculation storage subsystem performs calibration calculation correction on the stereoscopic image pair to eliminate image projection distortion, and pushes the corrected image data to a stereoscopic image display to observe digital stereovision images. The application solves the problems in the prior art that high-resolution monocular microscopes cannot realize stereovision image observation and that existing three-dimensional microscopic devices cannot simultaneously achieve high-resolution imaging and stereovision observation and detection.

A stereoscopic image scanning device comprises a linear scanning optical module, a planar scanning optical module, an image acquisition module, a motion platform and a control module. The linear scanning light module is used for projecting linear light to an object to be measured along an incident angle. The plane scanning light module is used for projecting plane light to an object to be measured along the same incident angle. The image capturing module is used for capturing the linear light or the planar light reflected by the object to be measured so as to obtain a first linear image or a planar image. The motion platform is used for controlling relative movement among the object to be detected, the linear scanning light module, the plane scanning light module and the image acquisition module so as to scan the object to be detected along a scanning direction.

The invention discloses a terrestrial ecosystem carbon monitoring satellite laser-assisted block adjustment method, which comprises the following steps of: three-dimensional image connection point generation: constructing a multi-stage pyramid for forward-looking and backward-looking 19-degree panchromatic images, and carrying out layer-by-layer matching inspection to obtain intra-scene and inter-scene connection points; free net adjustment: taking the connection point as control, gradually tightening a threshold and eliminating gross errors to obtain free net adjustment RPC irrelevant to absolute elevation; preparing a laser control point; laser-three-dimensional combined adjustment: taking the laser control point and the three-dimensional image connection point as observation values together, and carrying out forward intersection to obtain a corrected intersection control point; and final RPC determination: revising the image RPC again by using the revised intersection control point, and obtaining a final adjustment parameter after iterative convergence. According to the method, combined refinement of the free network and the laser absolute elevation is achieved through three-dimensional connection point hierarchical optimization, laser elevation replacement and distance reciprocal weighted coupling correction, and the geometric precision and reliability of block adjustment are remarkably improved.

A computer program product and corresponding method for targeting one or more points in a three dimensional (3D) model is provided. The computer program product including least one non-transitory computer readable storage medium in operative communication with a computer processing unit (CPU), the storage medium having instructions stored thereon that, when executed by the CPU, implement a process to register the 3D model with a stereoscopic image pair. The steps performed include inputting a first image and a second image that define a stereoscopic image pair into an object targeting program, wherein an object is shown in the first image and the second image, inputting a three dimensional (3D) model of the object into the object targeting program, registering the 3D model to the stereoscopic image pair, and targeting a point associated with or near the object based on the 3D model having been registered to the stereoscopic image pair.

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 embodiment of the invention discloses an image processing method and device, relates to the technical field of media, and is used for obtaining a relatively accurate camera imaging model. The method comprises the following steps: acquiring a satellite stereoscopic image and a camera image, wherein the satellite stereoscopic image comprises a plurality of satellite images shot by a satellite; determining connection points between the plurality of satellite images and the camera image; and determining a second imaging model of the camera according to the connection points between the plurality of satellite images and the camera image, the first imaging model of the camera and the imaging model of the satellite. According to the scheme provided by the embodiment of the invention, the camera image can be matched through the satellite image to obtain the connection point between the satellite image and the camera image; and updating an initial imaging model (i.e., a first imaging model of the camera) of the camera by combining the obtained connection points with an imaging model of the satellite so as to obtain a relatively accurate imaging model (i.e., a second imaging model of the camera) of the camera.

The embodiment of the present application provides a kind of based on classification global energy constraint stereoscopic image feature matching method and device, the stereoscopic image feature matching method based on classification global energy constraint includes: the feature point on reference image is divided into reference target feature point set and reference background feature point set, and the feature point on image to be matched is divided into target feature point set to be matched and background feature point set to be matched;The reference target feature point set and the target feature point set to be matched are matched, and the reference background feature point set and the background feature point set to be matched are matched, to obtain the feature matching result of stereoscopic image.Some embodiments of the present application divide the feature point on stereoscopic pair into target point set and background point set, and when feature point matching, target point set is only matched with target point set, can effectively reduce the search range of same name point, eliminate matching gross error, improve the efficiency, reliability and stability of matching.

In order to solve the problem that the image cannot break through the range of the display screen in the traditional integrated imaging display device, the application provides a super field of view display device based on high-order integrated imaging. The super field of view display device based on high-order integrated imaging comprises an image element array, a two-dimensional light splitting element and a reflecting surface. The on-screen stereoscopic image element array and the off-screen stereoscopic image element array are calculated through double-channel integrated imaging, and then the projection direction of the on-screen and off-screen stereoscopic image element array is further limited through the diaphragm limiting function, so that the on-screen stereoscopic image and the off-screen stereoscopic image can be displayed through the screen body and the mirror image thereof in the reflecting surface respectively, and finally the mirror image in the reflecting surface can make the range of the stereoscopic image exceed the range limitation of the screen and realize the super field of view display.

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.

The invention discloses a naked-eye stereoscopic image display device with high brightness and wide vision field, which is suitable for being matched with an imaging half-reflecting mirror for use, a backlight module is matched with an off-axis hyperbolic mirror module to project a directional backlight beam, a main display module and a shading module of a display are mutually overlapped, a plurality of blocks are divided, and time-sharing switching is carried out. Only one polaroid is arranged between the liquid crystal layer of the main display module and the liquid crystal layer of the shading module, the polaroid on the light incident side of the display module is a reflective polaroid, the backlight module generates an eye box array through reflection of the off-axis hyperbolic mirror module and the imaging concave mirror, different backlight sources and display blocks are switched, and the display effect is improved. And different small eye boxes in the three-dimensional space correspond to different positions of up-down, left-right and front-back movement of the eyes.

The application discloses a variable-baseline and phase-angle photography digital image stereo microscopic system and method, which realizes the forward and reverse equal translation movement of left and right two plane array digital photography cameras when the stereo photography distance is changed, and keeps the ratio K of the stereo image model camera baseline and the photography height unchanged in the movement, solves the problems of unstable stereo image model and stereo image flattening in the existing digital image stereo microscopic technology, and keeps the large stereo field of large stereo image overlap. After the stereo image is collected through photography and shooting, the camera internal parameter correction and the space projection position and posture correction are carried out through a data processing device, the digital image is rearranged, the errors of the camera pairing manufacturing itself and the errors generated by the variable-baseline and phase-angle photography system manufacturing and installation are eliminated, the requirements for the stereo photography camera manufacturing and the system equipment manufacturing and installation are reduced, and the technical performance of the digital image stereo microscopic system is improved.

The application discloses a kind of double-layer Monte Carlo optimization satellite photogrammetry terrain modeling methods, it is related to remote sensing and photogrammetry technical field, first, satellite laser height measurement data of study area is collected, and original data is filtered, and the stereo image of study area is obtained to carry out preliminary control point layout and aerial triangulation encryption;Second, the first layer Monte Carlo sampling system is constructed, and high confidence sample points are screened;Third, the second layer Monte Carlo offset experiment is established, and the multi-direction disturbance experiment is generated by analyzing the geometric response relationship between laser points and stereo images Multiple sets of random offset samples;Finally, the optimal offset parameter is determined by error response analysis, and the final high-precision digital elevation model is output;The method makes full use of laser point reference, combined with Monte Carlo optimization and spatial offset sensitivity analysis, realizes the high-precision, robust construction of DEM, and significantly improves the reliability and precision of digital elevation model.

A system includes sensors onboard an autonomous vehicle, a processor, and a memory. The memory stores instructions for the processor to receive a first image pair from the sensors at a first time and a second image pair from the sensors at a second time. Each image pair includes at least one static feature in an environment of the autonomous vehicle. The memory also stores instructions to determine a distance travelled by the autonomous vehicle between the first and second times, and to determine a correction to a disparity map based on (1) a first disparity associated with the static feature(s) and the first image pair, (2) a second disparity associated with the static feature(s) and the second image pair, and (3) the distance travelled. The memory also stores instructions to cause the correction to be applied to the disparity map.

The invention is suitable for the field of water conservancy projects, and discloses a method and a device for generating river topography based on a coherent difference principle, and the method comprises the steps: collecting the L1A-level data of a Gaofen-7 satellite of a river, and carrying out the preprocessing of the data; carrying out optimization processing on stereoscopic image pair data in L1A-level data of the Gaofen-7 satellite of the river channel, and generating initial DSM data of the terrain of the river channel; determining phase information of the river topography by combining initial DSM data of the river topography and an InSAR technology based on the same-period river SAR image data; and converting the phase information of the river topography into elevation information of the river topography, and correcting the elevation information of the river topography in combination with the ground control point to obtain target DSM data of the river topography. According to the method, after two-orbit method InSAR data is introduced for interference analysis, the characteristic of terrain deformation consistency can be effectively identified, the data processing efficiency is improved, the accuracy and reliability of the model are enhanced, and important technical support is provided for river treatment, ecological environment protection and the like.

The application discloses a stereo matching method and system based on feature enhancement and multi-scale cost fusion, relates to the technical field of optical satellite remote sensing image information extraction, and comprises the following steps: acquiring a pair of optical satellite stereo images of the same size after epipolar rectification, performing feature extraction, acquiring multi-scale features of the two images and performing feature enhancement; performing fusion and aggregation processing on the multi-scale features after feature enhancement after cost volume construction according to a set disparity range to obtain a cost volume under the highest resolution; normalizing the cost volume under the highest resolution to obtain an initial disparity map; inputting the initial disparity map, the cost volume under the highest resolution and context information of a left view of an image into a GRU for iterative updating to obtain a refined disparity map, and up-sampling the updated disparity map to a full-size size according to an up-sampling mask. The application provides a new technology of efficient and reliable stereo matching for the fields of photogrammetry and remote sensing.

The application provides a high-precision control point precise extraction method based on SAR images and optical images, (1) point-like ground feature type characteristics are identified and selected on the SAR images, and a feature point identification network is used to accurately position the feature center pixel, which is used as a primary selected control point; (2) a stereoscopic SAR image intersection is constructed, and the pixel coordinates of the primary selected control point are solved; (3) through optical-SAR image matching, the pixel coordinates of the primary selected control point are determined on the optical images, and the primary selected control points that are successfully matched are used as final control points. The application fuses spaceborne optical and SAR satellite images, develops a high-precision joint control point extraction method, effectively solves the positioning problem of space mapping technology in a large range and a difficult-to-reach area, provides reliable and efficient new type technical support for global infrastructure construction, resource exploration, disaster monitoring and the like, and has remarkable economic benefits and social benefits.

The invention belongs to the technical field of surveying and mapping, and particularly relates to a sea island reef image and laser height measurement combined adjustment method under waterline constraint. The method comprises the following steps: S1, inputting multi-source satellite data; s2, extracting water line points; s3, extraction of photon points; s4, preparation of joint adjustment: S41, stereoscopic image preprocessing, S42, waterline elevation control point generation, and S43, laser point elevation control point generation; and S5, joint adjustment and compensation: executing S51 joint adjustment, and performing S52 affine transformation compensation on an adjustment result. The multi-source elevation control point is constructed by introducing elevation constraints such as a waterline and fusing satellite-borne laser height measurement data, and high-precision three-dimensional mapping of an ocean reef area under the condition of no ground control is realized, so that the mapping problems that field control points are difficult to obtain, the open-source DEM precision is insufficient and laser points are not uniformly distributed are more efficiently and stably solved.

The invention discloses an automatic visual alignment wire bonder for an endoscope, which belongs to the technical field of wire bonders, and comprises a cabinet, a bearing mechanism, a special clamp arranged above the cabinet, a visual mechanism, a positioning mechanism, a wire bonder and a wire bonder, comprising a first optical vision module and a second optical vision module which are arranged above the machine cabinet, a welding point is shot through the first optical vision module and the second optical vision module from different angles and transmitted to the image processor so as to obtain a three-dimensional image of the welding point, and the executing mechanism comprises a precise welding head arranged above the machine cabinet. According to the laser precise welding device, the welding requirements of endoscopes of different specifications are met through the bearing mechanism, the universality of the device is improved, alignment errors are recognized in a high-precision mode through the visual mechanism, the defective rate of products is reduced, precise elements are protected in the welding process through the executing mechanism, and the maintenance cost is reduced.

The invention discloses a contour line-assisted satellite film building monotonized three-dimensional modeling method, which comprises the following steps of: performing fusion and uniform color processing on full-color and multi-spectral images of a satellite and RPC (Remote Procedure Call) files of the full-color and multi-spectral images to generate RGB (Red, Green and Blue) texture images with high resolution and consistent hue; dSM, DTM and building vector data are read in, a building contour is used as a mask, DSM grid points are leveled in a layered mode, a roof layered average elevation plane is constructed, and a facade triangulation network is generated at a time in combination with DTM peak elevation; constructing a top triangulation network by utilizing the edge points, the contour nodes and the feature point lines of the layered average elevation plane, and removing triangles outside the contour; and refining satellite image equivalent camera exterior orientation elements based on contour angular point virtual control points, completing mapping through sight shielding judgment, and outputting a building monotonized three-dimensional model with textures. According to the method, full-automatic and high-precision building monotonized three-dimensional modeling of a single satellite stereo image can be realized, image inclination or manual intervention is not needed, and the modeling efficiency and precision are remarkably improved.

The present application relates to the technical field of slope reinforcement evaluation, in particular to a loess slope reinforcement mechanical evaluation method, system and slope reinforcement method, the method obtains the growth characteristic parameters of plant root system in loess slope treated by nanoparticles, the growth characteristic parameters include the root system three-dimensional stereo image obtained by image superposition method and the root system surface index and root system diameter distribution measured; the diffusion characteristic parameters of nanoparticles in loess are obtained according to growth characteristic parameter analysis; the stability evaluation model containing the growth characteristic parameters and diffusion characteristic parameters is established according to the tensile strength of root-containing loess, in-situ strength spatial variation distribution map and modified cohesion and internal friction angle, the stability safety factor of loess slope shallow layer is calculated according to the stability evaluation model; an effective solution is provided for loess slope stability analysis.

The invention provides a DEM mosaic line generation method and device, equipment and a medium, and the method comprises the steps: obtaining a plurality of stereoscopic images collected for a preset region, the plurality of stereoscopic images comprise a group of stereoscopic images corresponding to each shooting unit in the preset region, and each stereoscopic image comprises a corresponding image name and an image time phase; data range extraction is carried out on the group of stereoscopic images corresponding to each shooting unit, vector files corresponding to each shooting unit are obtained, and the image name and the image time phase of each stereoscopic image are recorded in an attribute table of each vector file; segmenting overlapping areas of the plurality of vector files to obtain overlapping area vector graphs and non-overlapping area vector graphs among the shooting units; determining a target overlapping area vector graph according to the image time phase of the overlapping area vector graph; and according to the mosaic line of the target overlapping area vector graph and the mosaic line of the non-overlapping area vector graph, determining the mosaic line of the preset area. And the precision of the inlaid line in the preset area is ensured.