187results about How to "Realize seamless splicing" patented technology

The invention discloses an image registration and multi-resolution fusion-based panoramic image splicing method. An adaptive threshold of sequence images is subjected to binary processing and image contour information is extracted by utilizing a pixel neighborhood relationship; a similar region of an image contour structure is quickly estimated through a similarity measurement method for Hu momentinvariant features; and SIFT feature point extraction is performed in a similar region part of two original images. Moreover, feature point initial matching is performed by using a bidirectional K-nearest classification algorithm; mismatched points are screened by an RANSAC algorithm; and an affine transformation matrix among the images is estimated. In addition, in an image fusion aspect, brightness equalization and local color mapping processing is adopted. Then, through an improved Laplacian pyramid multi-resolution fusion algorithm, spliced images are fused to realize seamless splicing. According to the method, the image splicing time is shortened, the image splicing efficiency is improved, the similar region can be quickly located, the mismatch in splicing is effectively improved, and the image registration precision is improved.

The invention relates to a method for image mosaic without control points, which comprises the following steps: (1) acquiring an image sequence; (2) extracting a characteristic point set of each image in the image sequence; (3) searching homonymy point pairs of characteristic points between two adjacent images; (4) calculating a Homograph transformation relation between the adjacent images by using an RANSAC error-tolerant algorithm; and (5) using a continual multiplication formula and fusion technology to obtain mosaic results. Aiming at each characteristic point, the method can automatically collect a color channel with highest characteristic significance degree, so as to not only improve amount of the characteristic points greatly, but also improve significance and accuracy of the characteristic points. The method can be used as a correction method for human-computer interactive air photos to correct micro errors accumulated during mosaic. The method needs no control points, and has the advantages of high accuracy, low application cost and high efficiency.

The invention discloses a sub-aperture partition PFA (Polar Format Algorithm) radar imaging method, and belongs to the technical field of radar imaging. All apertures are partitioned into a plurality of sub-apertures; the sub-apertures are processed by using PFA to obtain azimuthal low-resolution images; movement error of the sub-aperture images is eliminated by using PGA (Phase Gradient Autofocus) processing; geometric distortion is eliminated through azimuthal up-sampling, space varying filter and geometric correction; partitioned sub-blocks with overlapped images of all the sub-aperture images obtained by the geometric correction are subjected to image registration; finally all the registered sub-aperture images are fused to obtain a final SAR image. The full-aperture data of a large block is partitioned into sub-aperture data of small blocks for processing, so that the imaging processing efficiency is improved; the partitioned sub-blocks with overlapped images are registered during implementation of the sub-aperture image registration, so that the registration of the entire images can be realized better and seamless splicing of the sub-blocks can also be realized after registration.

The invention relates to an airborne distributed inertial attitude measurement system and a transfer alignment method of the airborne distributed inertial attitude measurement system. The airborne distributed inertial attitude measurement system comprises a master inertial navigation system, a main control computer, and six slave inertial navigation systems connected with the main control computer, wherein each slave inertial navigation system respectively comprises an inertial measurement unit and an attitude measurement processing board, each inertial measurement unit is connected with an RS_422 interface of the corresponding attitude measurement processing board, each RS_422 interface is connected with an FPGA (Field Programmable Gate Array) chip through a UART (Universal Asynchronous Receiver / Transmitter) control chip, each FPGA chip is connected with a DSP (Digital Signal Processor) chip through an EMIF (External Memory Interface) bus and also connected with the master inertial navigation system through a CAN (Control Area Network) controller and a CAN transceiver, and the main control computer is connected with the master inertial navigation system. The transfer alignment method between the master inertial navigation system and each slave inertial navigation system of the airborne distributed inertial attitude measurement system comprises the steps of: by taking the speed information error and the attitude information error of the master inertial navigation system and the slave inertial navigation systems as measuring variables, correcting speed information and attitude information calculated by the slave inertial navigation systems after carrying out Kalman filtering iteration, and finally obtaining stable and accurate navigation attitude information.

The embodiment of the invention discloses a display module of an LED (light emitting diode), which is used for realizing seamless splicing of LED display screens. The display module provided by the embodiment of the invention comprises a circuit board formed by multiple layers of circuit boards, LED chips and IC (integrated circuit) plate chips, wherein the circuit board comprises an LED chip plate distribution region, a flexible printed circuit board bending region and an IC plate distribution region, wherein the length of the LED chip plate distribution region is an integral multiple of the distance of an LED dot matrix; two branches are formed at one end of the LED chip plate distribution plate region by the circuit board; one branch horizontally extends to a tail end; the other branch extends downwards into the flexible printed circuit board bending region; and the flexible printed circuit board bending region is completely covered by the LED chip plate distribution region, so that the flexible printed circuit board bending region is hidden below the LED chip plate distribution region.

The invention relates to comprehensive geographical spatial data coordinate conversion method and system. The method comprises the following steps: setting a source coordinate format and a target coordinate format; setting a source coordinate system and a target coordinate system; selecting a conversion mode and a conversion model of coordinate conversion, and setting a conversion parameter of the coordinate conversion; inputting coordinate data of a known control point in the source coordinate system and the target coordinate system; calculating coordinate conversion parameters according to the coordinate data of the known control point; and converting the coordinate data of a to-be-converted point in the source coordinate system into the coordinate data of the target coordinate system according to the coordinate conversion parameters. The comprehensive geographical spatial data coordinate conversion method and system can be used for achieving space coordinate conversion between geographical spatial data with different formats and different coordinate forms, proportional scales and coordinate systems, achieving conversion and calculations such as projection and band change of geographical spatial data achievements between different coordinate systems, and achieving conversion parameter calculation and accuracy assessment; meanwhile, the input process of the coordinate data of the control point is simple; and the coordinate conversion efficiency is high.

The invention provides a high-resolution optical push-broom satellite steady-state reimaging sensor calibration method and system; the calibration method includes the steps of building a single TDI CCD unsteady-state strict geometric model and a virtual CCD steady-state imaging strict geometric model, acquiring a rational function model according to the virtual CCD steady-state imaging strict geometric model, establishing a one-to-one mapping relationship between single TDI CCD images and virtual CCD reimaged images, and generating an image after the sensor is calibrated according to the original single TDI CCD images. According to the calibration method and system, the virtual CCD imaging principle is combined, the positioning consistency of a multiple TDI CCD unsteady-state geometric model and a virtual single-line-array CCD steady-state geometric model is utilized, image distortion caused by platform tremble is calibrated while seamless splicing of multiple CCD images is realized, standard scenery images and corresponding high-precision RPC parameters are provided for users, and subsequent image application is facilitated.

The invention discloses an improved image splicing key frame fast extraction method, and relates to the field of computer vision. The method eliminates the influence of image distortion through image preprocessing, detects feature points by using the SIFT, realizes the automatic extraction of key frames by taking a matching ratio of the feature points of adjacent frames as the similarity measure of images, splices the key frame images, greatly reduces the splicing time of the sequence images, screens initial matching pairs by using an improved RANSAC algorithm, calculates an accurate transformation matrix between the images to achieve image registration, and finally achieves seamless image splicing by using a weighted smoothing fusion method. The method has strong robustness, and the spliced images are natural and clear.

The invention discloses an image splicing and bending and deformation detection method of long-shaft type parts based on laser ray marking. According to the invention, a linear laser emits uniform linear laser beams which irradiate a cylindrical face of a to-be-detected shaft-type part; two images, in different axial direction positions, of the cylindrical face of the to-be-detected shaft-type part are acquired along the axis direction of the to-be-detected shaft-type part in any radial position towards the cylindrical face of the to-be-detected shaft-type part; there is an overlapping regionbetween the two images; by use of a related two-aperture splicing method based on laser marking line positions, the two images are spliced; the spliced images are subjected to coordinate conversion and is converted to be under the same coordinate system, so a splicing image is obtained; all spliced images are processed, and the slope values of the laser marking lines and axes are calculated; and finally, according to two slope values, carrying out calculation so as to obtain bending deflection errors, thereby finishing bending deflection detection. According to the invention, seamless splicingof sub-cylindrical faces without obvious characteristic points can be achieved; and the method is quite strong in anti-interference ability, low in cost and practical.

The embodiment of the invention provides an array substrate and a display device provided with the array substrate, and relates to the field of display technology. The array substrate and the display device provided with the array substrate solve the problems that a displayer in an existing technical scheme has a frame, and split pictures and discontinuous images appear after a large-size display screen is spliced, achieves a frame-free design of the displayer, meanwhile, achieves seamless splicing of the large-size display screen, improves a watching effect for users, and improves the overall display effect of the images. The array substrate comprises a grid driving circuit, no pixel electrode layer is arranged at the position, corresponding to the grid driving circuit, on the array substrate, and the array substrate is made of flexible materials. The grid driving circuit is arranged on the central axis of the picture where the array substrate is located and is used for providing driving signals for grid lines of the array substrate. The array substrate and the display device provided with the array substrate are used for manufacturing display panels.

The invention provides a point-to-point tile map dynamic projection method and device, and belongs to the technical field of network maps. The point-to-point tile map dynamic projection method includes the steps of obtaining the map display scope requested by a user at a client terminal and a client terminal display coordinate system, and determining the tile map scope requested by the user at the client terminal; determining the best map display layer and the corresponding tile rank position on the best map display layer according to the tile map scope and a map display plotting scale requested by the user, and forming a tile data sequence; determining rectangular scopes of tiles, located in the tile data sequence requested by the user, projected to the client terminal display coordinate system, and converting the rectangular scopes into client coordinate scopes displayed by tile data; generating internal storage bitmaps same in size according to the client coordinate scopes displayed by the tile data, and drawing a tile map with the point-to-point tile map resampling method. According to the technical scheme, the tile map is drawn through point-to-point dynamic projection in a conversion mode, and dynamic projection conversion and seamless splicing for embedding the tile map into a GIS are achieved.

The invention relates to the display technology of organic light emitting diodes, specifically to an OLED (organic light emitting diode) display module and an OLED spliced display screen with the OLED display module. The OLED display module comprises a substrate, an OLED structure used for generating OLED luminous pixels and a packaging layer used for packaging the OLED structure; and the substrate is a PCB (printed circuit board) substrate, wherein the OLED structure is arranged on the front side of the substrate, a wiring region connected with an external driving circuit is arranged on the back side of the substrate, contact wires corresponding to the OLED luminous pixels one by one are printed on the PCB substrate, and each of the contact wires is connected with the OLED structure at the position of the corresponding OLED luminous pixel, and is connected with the wiring region through the PCB substrate. According to the invention, a PCB is used as the substrate rather than a glass plate, and the existing non-luminous wiring region on the edge of the device is moved to the back side of the PCB substrate through leads of the contact wires, so that the non-luminous area of the device can be reduced, the splicing gap of the OLED spliced display screen spliced from the OLED display module can be greatly reduced, and the display effect of the screen can be well optimized.

The invention discloses an adjusting module based on variable curvatures and an arc-shaped LED display screen spliced from the adjusting module. The adjusting module comprises a first part and a second part, wherein the first part consists of angle adjusting components; the second part consists of positioning and locking components; the first part comprises a sliding set and a fixed angle set; the second part comprises a buckle set and a safety anti-loosing set. The invention further discloses the arc-shaped LED display screen based on the variable curvatures. The arc-shaped LED display screen comprises a plurality of unit boxes and a plurality of adjusting modules based on the variable curvatures. A right fixing block on the first part and a left fixing block on the second part are respectively mounted on adjacent sides of each unit box body, the adjusting module is adopted for angle adjustment and locking and positioning on adjacent unit box bodies, and the arc-shaped LED display screen of which the angle can be randomly varied within the range of 10 degrees can be formed. The adjusting module has the advantages of high universalization degree, applicability to multiple mounting situations, convenience in assembly and disassembly, high bearing capacity and solidness, adjustable radian and seamless splicing.

The invention discloses a projection technology, particularly an edge fusion technology for displaying multiple unit projections on a large screen. An Image edge fusion projection method comprises the following steps of: processing and partitioning an original image picture; generating a corresponding independent video signal, and outputting to a preset projector matrix for projection, wherein adjacent projection images have overlapped parts; adjusting the brightness of the overlapped parts; and projecting according to adjusted parameters. The method has the advantage that: edges of a plurality of projection sources can be fused through a soft fusion method without adding a physical shading sheet. By adoption of an overlapped projection mechanism, seamless splicing and whole brightness balance are realized. The method can be widely applied to large-screen projection occasions.

An automatic micro image jointing, storage and browsing method comprises unit image with recorded location, evaluating the jointing possibility of adjacent unit image, generating the optimal jointing sequence to get the relative position of each unit image, to generate the overall image after jointing based on the absolute position of each unit image based on the relative position, storing the relative position information of each unit image and the image, displaying the unit image required in the absolute position information acquisition of each unit image. It gets over a series of issues occurred in the processes like capture, joint, storage, and browsing due to the oversize of the image of existing microscope in the process of image acquisition and section handling.

The invention relates to the field of display devices, and particularly relates to a display device for eliminating a display frame. The display device comprises a display panel, wherein the display panel is divided into a center display area, an edge display area and a frame area, an optical system is arranged on the surface of the display panel and provided with one or a plurality of direct light structures positioned on the surface of the center display area and one or a plurality of periscope structures positioned on the surface of the edge display area, light which exits from the center display area directly penetrates through the direct light structures to exit, and light which exits from the edge display area is offset to the direction of the frame area through the periscope structures and then exits. According to the display device, the periscope principle is utilized to set the periscope structures, and the periscope structures are arranged in the edge display area of the display panel, so that a part of light which exits from the edge display area is offset to the frame area, thereby transferring a part of the pixel of the edge display area of the display panel to the frame area, so as to achieve the effect of eliminating the frame and realize seamless splicing of the display panel.

The invention relates to a method correctly obtaining the corresponding relationship of the pixel geometric position between the projection image of a projector and the frame buffering image of a computer. The method includes the steps that: (1) a characteristic pattern of the projection image is determined, the circumference of the characteristic pattern is provided with a rectangle, and the center of the characteristic pattern is provided with a central symmetrical pattern that is uniformly arranged corresponding to a characteristic point; the parameter of the pattern is calculated; the characteristic pattern is projected on a displaying wall by a projector in an opposite color; the image of the characteristic pattern that is displayed on the displaying wall is shot with a digital camera; the shot image is segmented; every corner point of the rectangle surrounding the characteristic pattern is identified in the segmented image; every internal central symmetrical pattern is identified in the segmented image, and the center of the internal central symmetrical pattern of the characteristic pattern is calculated with the traditional statistical method; the two characteristic points are formed into a data matrix; the calculus of interpolation is carried out for the data matrix, thereby the matrix data after the interpolation establishes a corresponding geometric relationship with the original characteristic pattern on the pixel position.

The invention relates to the field of display screens, in particular to a display device. The display device comprises a displayer provided with a display surface and a frame. An optical microlens array including a plurality of microlenses is arranged above the displayer. Light rays emitted from the displayer are irradiated into the optical microlens array from positions near to focal plane positions of the microlenses in the optical microlens array. A scattering screen is arranged above the optical microlens array. The display device has the advantages that the optical microlens array and the scattering screen are arranged on the surface of the displayer additionally, and image information from the displayer are shifted and amplified and can cover the frame of the displayer to shield the frame of the displayer, so that splicing seams among splicing units can be eliminated completely when the display device is applied to a spliced display screen, seamless splicing is achieved, and display images are complete, continuous and free from split sensation; on the basis of the scattering effect of the scattering screen, the complete and continuous image information can be still viewed and does not distorted when being viewed from wide angles.

Provided is a method for playing a panoramic video, applied to terminal equipment. The terminal equipment comprises a display screen. The method comprises: displaying a panoramic video under a navigation mode; calculating two-dimensional displacement information generated in a movement process of a touch operation executed on the display screen; calculating a rotation angle of a pre-established spherical model according to the two-dimensional displacement information; and changing an angle of view of a panoramic video picture according to the rotation angle. The present invention also provides a system for playing a panoramic video, and terminal equipment. In the present invention, playing of a panoramic video can be accurately controlled by a finger, the terminal equipment does not need to be shaken when playing of the panoramic video is controlled, and therefore a user does not need to adjust a viewing direction, thus bringing a better viewing experience.

The invention discloses a wide fabric image acquiring and splicing method based on reference characteristics. The method comprises the steps: horizontally arranging the fabric on a fabric carrier table, horizontally arranging a reference fabric in the middle of the fabric carrier table, then moving the reference fabric, and respectively acquiring a left reference image, a right reference image, an original left image and an original right image in the process; obtaining a respective Harris angular point set by adopting a multi-scale Harris angular point detection method for the left reference image and the right reference image; carrying out the initial matching by adopting a normalization relevant measurement method to obtain an initial matching point set; carrying out the initial matching characteristic point refinement and homography solution by adopting an RANSAC method to obtain a final homography; carrying out the projection conversion registration on the original left image and the original right image, then splicing and fusing, and acquiring and splicing the fabric image. By adopting the method, the seamless splicing of the fabric image with high circulating period or no obvious characteristic is realized, the splicing precision is high, the relative geometric position relation of the original fabric image can be precisely calculated, and the interference resistance is high.

The invention discloses a splicing method of a binocular stereoscopic image. The method includes: S1, adopting binocular cameras to collect multiple groups of images, extracting features, and obtaining feature point sets by screening, wherein each group of images includes first eye images collected by a camera of a first direction, and second eye images collected by a camera of a second direction;S2, carrying out transformation and splicing on the first eye images according to the feature point sets, which are obtained by screening in the step S1, to obtain a first eye image after transformation and splicing; S3, calculating and obtaining a target parallax map according to the collected multiple groups of images; S4, carrying out transformation and splicing on the second eye images according to the first eye image after transformation and splicing and the target parallax map to obtain a second eye image after transformation and splicing; and S5, synthesizing the first eye image aftertransformation and splicing in the step S2 and the second eye image after transformation and splicing in the step S4 to obtain the final stereoscopic image. According to the splicing method of the binocular stereoscopic image provided by the invention, seamless splicing and ghost reduction can be realized, and limitation on placement positions and angles of the cameras is also eliminated.

The invention discloses a splicing screen and a manufacturing method thereof and a display device. The splicing screen comprises at least two display panels, wherein the at least two display panels are mutually spliced; each display panel comprises a bending area, a plane area, a transparent plane body and a support body, wherein the bending area is bent from the side of a splicing position to the back of a display surface, the transparent plane body is positioned at one side of the display surface of each display panel and covers at least the bending area of each display panel, the support body is supported between the transparent plane body and the bending area of each display panel and contains a plurality of meshes, each mesh extends from each display panel to the transparent plane body, the inner wall of each mesh includes a reflecting surface, so that light emitted from the bending area of each display panel is continuously reflected by the inner walls of the meshes of the support body and is ultimately scattered by the transparent plane body which covers the bending area of each display panel so as to enter the eyes of lookers, then the edge of the splicing position of each display panel is displayed, and the seamless splicing without a splicing gap is realized.

The invention relates to a variable LED display screen which comprises a plurality of LED modules and a plurality of installing modules arranged among adjacent LED modules and enabling the LED modules to be connected to form the display screen. The installing modules are adjustable installing modules, the relative gaps between the adjustable installing modules and the adjacent LED modules connected with the installing modules can be finely adjusted, and each adjustable installing module comprises an adjustable X-axis installing part, an adjustable Y-axis installing part and an adjustable middle installing part. The size adjustment of the variable LED display screen can be achieved, shape adjustment of the LED display screen can be achieved, and multiple accessories can be connected to the display screen to extend functions of the display screen.

The present invention discloses a color filter which is provided with a transparent baseplate; a shading zone is formed on the baseplate and a plurality of pixels are also distributed on the baseplate, wherein, each pixel is provided with a first color zone, a second zone and a third zone, in particular the first color zone, the second color zone and the third color zone of each pixel are centrosymmetric hexagons, and with an arbitrary first color zone as the center on the transparent baseplate, six mutually spaced second color zones and third color zones are faveolately in scarf joint around. The color filter with the structure has good color display effect and can weaken sawtooth in the margin of image when the image is displayed obliquely.

Provided is a panorama image splicing method based on edge vertical distance matching. The method comprises the following steps: (1), extracting the edges of two images by use of a CANNY algorithm; (2), screening a matched pixel column; (3), performing matching according to variances of edge pixel ordinates; (4), performing grouping according to variance values and reflected image relative positions; (5), performing the edge vertical distance matching on each group, and determining that a smallest group distanced from statistical values is an image splicing position; and (6), performing image stitching processing. According to the invention, through matching the edge vertical distances of two neighboring images, automatic splicing of a panorama image is realized. A matching position is screened in advance so that computing amount is reduced, computing time is saved, and computing precision is improved. A vertical distance coupling algorithm can help to find out an optimal seam, i.e., the seam position is disposed at a position with smaller information content in an image, and an information key position is avoided as likely as possible; and an original image is completely reserved in most area of a splicing image so that information of the original image can be reserved to the maximum.

The invention discloses a seamless splicing unit and a display device. The seamless splicing unit comprises an outer frame and a liquid crystal display screen, wherein the outer frame is used as a liquid crystal splicing unit; the liquid crystal display screen is embedded into the middle part of the outer frame; the outer frame is used as the outer frame of an LED (light emitting diode) display screen. The seamless splicing unit has the advantages that the defect of influence to the picture effect by splicing seams of the liquid crystal splicing screen is overcome, the LED display screen is used as the outer frame of the liquid crystal splicing unit, and the liquid crystal display screen is embedded into the middle part of the outer frame to form the seamless splicing unit; when a large screen is formed by the seamless splicing units, the seamless splicing units are spliced by an LED display screen method, so that the seamless display is realized among the seamless splicing units, and the same picture is synchronously displayed.

The invention relates to a projected image geometric distortion automatic correction system and a correction method thereof. The hardware part of the system comprises an offer measurement and control computer, a projector, an angle detection system, an image fusion computer and an imaging computer; the software part is geometric distortion automatic correction software; the software comprises a digital camera image acquisition and processing unit, a cloud platform control unit, a projector setting module and a projector correction processing unit; through cooperative work of the geometric distortion automatic correction software and hardware, the projected image geometric distortion automatic correction can be realized, and the technical difficulties of poor overall picture effect after the manual image correction and long adjustment time are solved.

The invention provides a mosaic mode implementation method based on agile SAR (synthetic aperture radar) satellite attitude maneuvering, and the method comprises the steps: calculating total parameters for achieving the mosaic mode imaging; calculating the parameters of a central imaging subblock of an image formed by the mosaic mode imaging; gradually increasing the imaging subblocks based on the central imaging subblock, and calculating the parameters of the imaging subblocks till the obtained azimuth imaging of the image meets the demands. Therefore, the method gives full consideration to a precise track and an earth model, designs an aiming point and working time sequence of an agile SAR satellite according to the mosaic mode demand performance indexes and imaging geometry, obtains the beam pointing direction needed by imaging through the lateral rolling and pitching maneuvering of the whole satellite, controls the direction of a ground footprint of a radar beam through the yaw maneuvering of the whole satellite, and achieves the quick switching of the beam in a range direction through electric scanning. The method guarantees the seamless joint between different image sublocks in the mosaic mode, and provides an economical and high-efficiency implementation solution.

The invention discloses a splicing method for tire mold images, which comprises the steps of inputting a set of photographed tire mold images, extracting the external boundary of the photographed tire mold images, fitting the external boundary to be arc-shaped, straightening the arc-shaped external boundary through the polar transformation process, conducting the pretreatment and the threshold segmentation, conducting the registration based on the gradient and phase-related method to obtain the overlapped part of two adjacent images, fusing by adopting a fusion method based on the combination of the optimal convergence and the weighted gradient fusion, splicing all adjacent images to form a first image based on the fusing result, determining the fore-and-aft overlapped part of the first image based on the registration algorithm, processing the first image in combination with the above fusion method to obtain a second image, and restoring the second image into the image of a circular tire mold through the polar coordinate inverse-transformation process. The method is good in splicing effect, simple, convenient and practical, which can be widely applied to the image processing field.

The invention discloses a multi-screen spliced seamless display screen. The multi-screen spliced seamless display screen comprises at least two mutually spliced display units, wherein image processing modules of the same size are laminated on the surface of each display unit, are a Fresnel lens, a cylindrical lens, a magnifier or an optical lens and are additionally overlapped by optical processing modules; the optical processing modules are anti-dazzle glass, organic glass, an acrylic plate, a resin material or an anti-scratch lens; the display units, the image processing modules and the optical processing modules are wrapped by a fixing module for fixed connection. The seamless splicing of the display units are truly realized, so that the integral performance of an image displayed by the display screen is just right, the situation of mismatch of pictures and characters produced during precise image-text display can be effectively prevented, and the sense of projection in vision is eliminated.