245 results about "Stereo imagery" patented technology

The stereo display apparatus displays parallax images to present a stereo image. The apparatus acquires the parallax images and information on a maximum pixel shift amount and a minimum pixel shift amount of the parallax images, calculates maximum and minimum relative parallax amounts corresponding to the maximum and minimum relative parallax amounts, by using the information on the maximum and minimum pixel shift amounts and a display condition, and determines whether or not at least one of the maximum and minimum relative parallax amounts exceeds a fusional limit criterion value. The apparatus determines whether or not a difference between the maximum and minimum relative parallax amounts exceeds a fusional limit range amount if the at least one of the maximum and minimum relative parallax amounts exceeds the fusional limit criterion value.

The invention provides a method and a system for processing high-definition remote sensing image data by applying a rational function model, a satellite image block adjustment and auto-match and distributed parallel processing technology. The method comprises the following steps: analyzing and processing input primary image data and computing parameters of the corresponding rational function model so as to obtain a stereo image pair by applying the computed rational function model; performing measurement and singlechip orientation of a control point and a connecting point on the primary image data, and performing block adjustment processing on an error between stereo image pixel data and the primary image data so as to improve the fit precision between the stereo image pixel data and the primary image data; generating an image similar to an epipolar ray, defining a matching template, measuring matched seed points and lines, performing automatic image matching and generating a digital elevation model; and respectively generating a digital orthophoto map and a digital line graph, and finishing manufacturing a product by applying the obtained data.

A stereoscopic video display apparatus includes: a two-dimensional display unit which selects, for each of parallax images having a parallax from a reference parallax image, at least one pixel sequence on a panel, and displays each of the parallax images using the selected pixel sequence; a barrier part which divides light from the pixel sequences such that the respective parallax images are displayed at predetermined positions; a position detecting unit which detects the positions of viewers; and a parallax image arrangement control unit which specifies viewing positions possible for the left eyes of the viewers from among the detected viewing positions other than the viewing positions for the right eyes, and cause the two-dimensional display unit to respectively display the parallax images predetermined for the left eyes at the specified positions.

A transparent print media comprising a first surface having a polarity of lenticular portions adapted to image left and right stereo images printed on an opposing surface to the first surface so as to produce a stereo photographic image when viewed from the first surface.

To make it possible to stably provide a stereoscopic image which can be viewed by each viewer in the state where the stereoscopic effect and the sense of reality are maximized. Left eye and right eye images (images for measurement), the parallax between which is continuously or stepwise changed, are outputted beforehand to a stereoscopic image display device, and the face of the viewer viewing the images for measurement is photographed. The pupil width of the photographed viewer is measured, and based on the state of the change in the pupil width, the fusion limit of the viewer is measured and registered. In the case where a stereoscopic image for appreciation is displayed, the stereoscopic image is outputted by controlling the parallax of the stereoscopic image so as to prevent the parallax from exceeding the fusion limit of the viewer, which is measured beforehand.

There is provided a manufacturing method that includes: applying a resin to a region at which the right eye image generating region and the left eye image generating region of the image display section overlap with the right eye polarization region and the left eye polarization region of the retarder, on at least one of an emission-side surface of the image display section and an incident-side surface of the retarder; after the applying, laminating the image display section and the retarder so that the emission-side surface of the image display section faces the incident-side surface of the retarder; and attaching the image display section and the retarder by hardening the resin between the image display section and the retarder laminated to each other in the laminating.

An embodiment of the present invention utilizes the Reference Point Method (RPM). RPM generates a local magnetic declination variance that is exact for the location of the OP, utilizing an optical stereo imagery database. RPM functions to determine true geodetic coordinates of a target position not available to be displayed in an image database, such as, for example, movable equipment.

The invention relates to a remote sensing image road extracting method based on stereo constraint, which comprises the following steps: extracting and refining the edge of the left image of a stereo pair, thereby obtaining a binary image of the single pixel edge; carrying out shape constraint and vectorization on the binary image of the single pixel edge by using an improved phase grouping method; carrying out edge line node matching on the basis of grey scale correlations, thereby determining the homonymous image point of the edge line node on the right image; resolving node elevation on the basis of an image pair RPC model parameter or interior / exterior orientation element forward intersection method; and determining the road extraction result on the basis of the road edge line constrained by the node elevation. Starting with the stereo image, the invention extracts the elevation information of the road edge line, which is obtained after edge extraction, refining, shape constraint and vectorization, and establishes a model by which the branch nodes of the candidate road edge lines can be matched and the elevation information can be acquired by carrying out forward intersection on the homonymous point information; and according to the elevation characteristic of the road, the invention establishes elevation constraint conditions, carries out elevation constraint, and extracts satisfactory road edge lines from the candidate road edge lines, thereby realizing quick automatic extraction of road thematic information on the remote sensing image.

The invention discloses a road survey and design method based on a high-resolution satellite image, which comprises the following steps: A, determining a scope to be covered by a satellite image according to a route scheme, selecting a high-resolution satellite and a sensor for collection, and designing and collecting three-dimensional images of the high-resolution satellite; B, when a scale of 1 to 2,000 is formed, laying and measuring field ground control points and laying control points along the route; C, generating a digital ground model, a digital orthophotomap and a digital line topographic map for the road route area through area adjustment of the three-dimensional images of the high-resolution satellite based on rational polynomial parameters of the images of the high-resolution satellite; and D, calculating engineering quantities and generating route design drawings and tables through measurement of the high-resolution satellite and collaborative design of the road CAD. The invention realizes the measurement of the high-resolution satellite and the collaborative design of the road CAD, thereby greatly reducing the field workload, shortening the survey and design period, and producing significant economic and social benefits.

A stereo image interaction system includes a stereo image capturing module, a stereo image processing unit, a system host, and a stereo image display module. When the stereo image display module displays a stereo image, the stereo image capturing module obtains a motion image of an operation body, the stereo image processing unit obtains a motion characteristic from the motion image and transmits the motion characteristic to a central processing unit (CPU), and the CPU calculates a real-time motion of the stereo image under the motion characteristic. At this time, the stereo image displayed by the stereo image display module changes along with the motion characteristic, so that a virtual stereo image is displayed in a physical space, and the operation body is enabled to directly perform a real-time interaction on the stereo image. Furthermore, the displayed stereo image may be a first stereo image captured by the stereo image capturing module or a second stereo image pre-stored by a storage unit in the system host.

A method for rigorously reshaping a pair of overlapping digital images using a Digital Photogrammetric Workstation (DPW) is disclosed. The overlapping images are imported into the DPW as a pair of originally distorted images having an associated sensor model. The original images are triangulated to adjust sensor parameters. Orthophotos are created with a flat digital terrain matrix (DTM) to leave terrain displacements within themselves, and according to a sensor model and formula for exact projective computations. The orthophotos are aligned by rotation, and interior orientation coordinates of the equivalent vertical frame images are determined. The orthophotos are imported as a pair of overlapping equivalent vertical frame images according to the interior orientation coordinates. A digital terrain model is generated in the DPW using the overlapping equivalent vertical frame images. Another orthophoto is produced using the digital terrain model to remove the measured terrain displacements. In an alternative embodiment, the equivalent vertical frame images are aligned by using the classical pair-wise rectification method or by separately rotating each image without aligning the orthophotos by rotation during their creation. In each embodiment, the sensor model of the original distorted images is dissociated from the orthophotos for subsequently greater distribution and usage of the stereo imagery.

A stereoscopic image display device comprises: a display device that displays left-eye image data in a left-eye frame and right-eye image data in a right-eye frame; liquid crystal shutter glasses that alternately open and close a left-eye shutter and a right-eye shutter in synchronization with the display device; and a control circuit that controls the ON duty ratio of a backlight of the display device to a first set value if the luminance of each of the left-eye and right-eye frames is less than a predetermined reference value, and controls the ON duty ratio of the backlight of the display device to a second set value if the luminance of each of the left-eye and right-eye frames is greater than the reference value.

Glasses lenses for stereoscopic image and glasses using the same relates to a liquid crystal layer with flexible films formed on transparent electrode. This invention makes the lenses flexible, and by bending the lenses, fashionable glasses can be made. In this invention, the glasses' breakage has decreased because the film's material is unbreakable by impact and the viewer wearing the glasses is comfortable because of thin thickness and lightweight. Also, the glasses for stereoscopic image are equipped with a connector holder. Thus, in case of cable malfunction, a user only needs to change the cable, not the whole unit.

The invention provides a virtual fire-fighting training system, which comprises a backpack type virtual actual combat training system and a backpack type virtual terminal control system. The backpack type virtual actual combat training system is running on a cloud server. The backpack type virtual terminal control system is running on a backpack type terminal. The backpack type virtual actual combat training system, running on the cloud server, comprises a user management module, a training data module, a scene data module, a data management system, a virtual fire-scene environment generation module, a fire-scene fluid AI control module, an equipment interaction effect control module, a multi-person collaborative AI control module, a virtual training scene system and a scene management system. The backpack type virtual terminal control system, running on the backpack type terminal device, comprises a cloud rendering data stream control module, a scene display module, an interaction control module, a binocular stereoscopic image retina projection system, a position collecting module and an action acquisition module.

A stereoscopic image display device includes a liquid crystal display panel on which frame data is addressed, a frame rate conversion unit that divides 3D input data into left eye image data and right eye image data, and inserts reset frame data including black grayscale data between the left eye image data and the right eye image data, and a luminance difference compensation unit that generates compensation values for compensating a luminance difference depending on positions in a screen of the liquid crystal display panel, wherein a compensation value added to the left eye image data and the right eye image data to be displayed on an upper part of the screen of the liquid crystal display panel is higher than a compensation value added to the left eye image data and the right eye image data to be displayed under the upper part of the screen.

The invention discloses a 3D lesson preparation and teaching system and method. The system comprises a login module, a lesson operation module, a lesson preparation module, a lesson teaching module, a display module and a processing module, wherein the lesson operation module is used for creating courseware according to lesson parameters, the lesson preparation module is used for carrying out teaching content preparation for the courseware created by the lesson operation module, the lesson teaching module is used for carrying out lesson teaching according to the order of pages of the courseware created by the lesson preparation module, the display module is used for displaying all other modules, and the processing module is used for processing data of all the modules. The invention further discloses a 3D teaching system, and the 3D teaching system comprises interaction equipment, the 3D lesson preparation and teaching system and a cloud server. The invention further discloses the 3D lesson preparation and teaching method. Through the system and the method, interaction between students and the teaching knowledge is enhanced, stereo images of models or 3D videos can be acquired through utilizing virtual-reality stereo glasses, learning interests of the students can be motivated, and the learning effect is improved.

A stereoscopic image display apparatus and method which reduce crosstalk and select either high resolution images or bright images. The stereoscopic image display apparatus includes first and second image forming areas, each area including multiple contiguous horizontal rows. The areas are alternately disposed in a liquid crystal display, and display right and left eye images on the first and second image forming areas, respectively. The display displays the images in a fixed manner or replaces or overwrites the image areas every time a frame is switched, and displays a frame image in which the right and left eye images are simultaneously displayed. When the first and second image forming areas are alternately replaced, according to the frame switching timing, the backlight is controlled to turn on and phase difference states of right and left eye glasses of polarized eyeglasses are alternately replaced.

A stereoscopic video coding device inputs therein a reference viewpoint video and a left viewpoint video, as well as a reference viewpoint depth map and a left viewpoint depth map which are maps showing information on depth values of the respective viewpoint videos. A depth map synthesis unit of the stereoscopic video coding device creates a left synthesized depth map at an intermediate viewpoint from the two depth maps. A projected video prediction unit of the stereoscopic video coding device extracts, from the left viewpoint video, a pixel in a pixel area to constitute an occlusion hole when the reference viewpoint video is projected to another viewpoint and creates a left residual video. The stereoscopic video coding device encodes and transmits each of the reference viewpoint video, the left synthesized depth map, and the left residual video.

The present invention relates to a stereoscopic image display and a power control method thereof, including a timing controller which varies a driving circuit supply voltage between a first voltage and a third voltage in a 3D mode for displaying a 3D image on a display panel by controlling a power supply circuit and controls the driving circuit supply voltage as a second voltage in a 2D mode for displaying a 2D image on the display panel. The second voltage is lower than the first voltage and is higher than the third voltage.

The invention relates to a multi-stereoscopic-image fusion drawing method considering different illumination imaging conditions. The method comprises the following steps: step one, acquiring an existing image of a research area and selecting a multi-coverage stereo image pair; step two, constructing an imaging geometric model of a remote sensing image; step three, carrying out initial matching onthe stereo image pair to obtain same-name points; step four, carrying out stereoscopic image area network beam method adjustment on the imaging geometric model obtained at the step two to obtain a refined imaging geometric model; step five, carrying out dense matching on each group of stereoscopic image pairs to obtain an image-space dense same-name point set of all groups of stereoscopic image pairs; step six, on the basis of the refined imaging geometric model obtained at the step four, carrying out forward intersection on the image-space dense same-name points obtained by the step five to obtain a dense three-dimensional point cloud of the object space, carrying out grid division and interpolation to obtain a DEM, and carrying out DEM fusion to obtain a hole-free DEM; and step seven, according to the hole-free DEM and the refined imaging geometric model, a DOM being an image with geographic information after terrain correction is obtained.

The invention relates to a projection system used for presenting a stereoscopic image and a method thereof. The projection system comprises a lens, an image generator, an optical control unit, a polarization unit and a driving device, wherein the lens is used for projecting an image on a display screen; the image generator is used for alternately outputting a first group of image beams in a first time sequence and a second group of image beams in a second time sequence, and the first group of image beams and the second group of image beams have different visual angles; the optical control unit is used for reflecting the first group of image beams or the second group of image beams which are transmitted by the image generator to the lens; the polarization unit is used for outputting the first group of image beams and the second group of image beams in a polarization way when being rotated to a first angle and a second angle respectively, and the first angle and the second angle have an angle difference of 90 DEG; and the driving device is used for driving the polarization unit to be rotated to the first angle or the second angle. The projection system has the advantage of high imaging quality and equipment cost and space saving.

The invention provides a panoramic three-dimensional image manufacturing method, and in particular relates to the field of image synthesis. According to the panoramic three-dimensional image manufacturing method provided by the embodiment of the invention, by the adoption of an image correction mode, 9 direction cosines of an external azimuth angle element and camera calibration parameters are obtained from spatial three-dimensional encrypted data, pixel points on each original image are subjected to correction according to the width and the height of a pre-acquired standardized image, so that the standardized image is generated, and the inclinations of the original images caused by inclination of a shooting angle can be corrected, therefore, the original images can be perpendicular front view images and can be easily spliced during synthesis of a three-dimensional image; furthermore, coordinates of each standardized image within a bottom surface projection range are determined in a standard coordinate system, so that the superposition degree of the standardized images can be precisely determined, and thus the synthesis of the three-dimensional image is precisely finished, namely the synthesis of the three-dimensional image is finished under a condition that DEM data are not used.

A five-dimensional (5D) 360-degree ring screen digital stereoscopic cinema system and a showing device thereof are characterized in that the 5D 360-degree ring screen digital stereoscopic cinema system comprises a main control server, a branch control server, projection equipment, watching equipment and a special effect generating device. The main control server comprises a control module, audio-video playing software and image processing software. According to the 5D 360-degree ring screen digital stereoscopic cinema system, a 5D movie and a 360-degree ring screen movie are combined into a whole, a video signal is output through the main control server, processed through the image processing software and displayed through the projection equipment, a shown stereoscopic image can surround audiences, the stereoscopic image rushes out of a ring screen and reaches to a position in front of eyes of the audiences, and passes through the audiences to a position behind the audiences, scenes provided by a movie and stereoscopic dynamic images surround and penetrate through the positions all around the audiences, the audiences can be personally on the scenes in a high-emulation mode, and the movie images are integral, continuous and lifelike.

A method and apparatus for generating stereo imagery scenario data to be used to test stereo vision methods such as detection, tracking, classification, steering, collision detection and avoidance methods is provided.

The invention relates to a manufacturing method for a projection digital elevation model capable of changing together with an image, which combines internal-external orientation elements, DEM (Digital Elevation Model) data and DSM (Digital Surface Model) data of the image and generates the digital elevation model corresponding to the image. Through the invention, the positions of the points on the two-dimensional image are in one-to-one correspondence with three dimensional coordinates of the model, so as to accurately obtain real elevation value and horizontal coordinates of the corresponding points. Due to the adoption of the technical scheme provided by the invention, each image can obtain the corresponding surface coordinate and ground coordinate, thereby utilizing orthophoto image for image measuring rather than a stereoscopic image for observation.

In a method for taking three-dimensional (3D) images, a camera unit of an electrical device is utilized to shoot a same scene with a same lens focal length and focusing on different distances respectively to generate several pictures. Depth-map information of several blocks on the scene is calculated according to levels of clarity on the blocks. Offsets of the blocks of the pictures are respectively adjusted for right and left eyes according to the depth-map information of the blocks to generate at least one 3D image. The present invention also discloses an electrical device for taking 3D images and a non-transitory computer-readable storage medium for storing the method for taking a 3D image.

A stereoscopic image displaying device enables the stereoscopic view of a stereoscopic cursor to be restored while maintaining the stereoscopic view of a region of interest even in a state where the stereoscopic cursor cannot be viewed stereoscopically. The stereoscopic image displaying device includes a stereoscopic cursor moving unit that moves the stereoscopic cursor in a depth direction and an in-plane direction in response to a movement instruction input; a reference position setting unit in which a reference position in the depth direction and the in-plane direction is set in advance; and a stereoscopic cursor reference position moving unit that moves the stereoscopic cursor moved by the stereoscopic cursor moving unit to the reference position in response to a reference position movement input.

A method of elevation control points extraction assisted by satellite laser altimeter data, which is characterized in that take the waveforms received by satellite and the waveforms simulated from digital surface model (DSM) of image scene reconstruction as input data, and includes two times of waveform matching and combined process of multi-source remote sensing data. The elevation control points could be extracted without the influence of terrain fluctuation or urban buildings for the terrain information of laser spot area has been taken into account. The first time is realized by matching two groups of waveforms from the received and the simulated, and the spatial registrations between locations of laser spots and DSM are realized. The second time is realized by matching two single waveforms from the received and the simulated, and local system errors in DSM of laser spot area could be extracted. With the registration results and local system errors, many applications including extraction of elevation control points could be easily developed. The invention mainly includes the following steps: (1) Preliminary refinement of orientation parameters of high-resolution stereo or InSAR images by free net adjustment; (2) DSM reconstruction with high-resolution stereo images or InSAR data; (3) dividing the received laser altimetry data into groups; (4) Waveform extraction of the receiving group; (5) observation design for simulation waveform group; (6) simulation waveform acquisition through observation of DSM; (7) matching the received group waveforms with the simulated group waveforms; (8) plane position registration between laser spot and DSM; (9) matching each pair of waveforms in group between the received and the simulated respectively; (10) extraction of DSM elevation system errors on each laser spot area; (11) extraction of image elevation control points; (12) refinement of DSM elevation, calibration of satellite laser altimeter sensor, combined processing with laser altimetry and image remote sensing. The invention mainly solves two difficulties. One difficulty is finding footprints, or say laser spot areas, of satellite laser altimeters on stereoscopic images, InSAR images and the DSM they generate. Another difficulty is the accurate elevation extraction of laser spot areas with uneven terrain. The invention can realize the spatial registration between laser spot and DSM or remote sensing in different terrain and establish spatial connection between laser altimetry data and stereo images or InSAR data. In different terrain conditions, by the invention, the satellite laser altimetry data can be used for high-precision elevation control of 3D reconstruction / positioning of stereo images or InSAR data.

A stereoscopic image aligning apparatus (200) automatically aligns image pairs for stereoscopic viewing in a shorter amount of time than conventional apparatuses, which is applicable to image pairs captured by a single sensor camera or a variable baseline camera, without relying on camera parameters. The stereoscopic image aligning apparatus (200) includes: an image pair obtaining unit (205) obtaining an image pair including a left-eye image and a right-eye image corresponding to the left-eye image; a corresponding point detecting unit (252) detecting a corresponding point representing a set of a first point included in a first image that is one of the images of the image pair and a second point included in a second image that is the other of the images of the image pair and corresponding to the first point; a first matrix computing unit (254) computing a homography transformation matrix for transforming the first point such that a vertical parallax between the first and second points is smallest and an epipolar constraint is satisfied; a transforming unit (260) transforming the first image using the homography transformation matrix; and an output unit (210) outputting: a third image that is the transformed first image; and the second image.

The invention discloses an image matching method based on a corner point and single-line segment marshalling feature description operator. The method comprises the following steps: firstly, extractingline segments and Harris corner points from an image; constructing a line segment, searching and grouping the line segment, constructing an angular point-single line segment texture descriptor with scale, rotation and illumination invariance by using a detected angular point and the line segment, the Harris angular point having the advantage of rotation invariance, and the line segment adopting ahalf-width descriptor can improve the reliability in a parallax change scene; performing spatial weighted shortest distance measurement to obtain a local matching result; finally, determining the candidate matching of each line segment, establishing a matching matrix and solving a global matching result through spectral analysis. The image matching description operator has the characteristics ofscale, rotation and illumination invariance. According to the invention, image pyramids are respectively established for three-dimensional images. The pyramids on different layers are matched one byone, so that the scale influence can be eliminated. The defects of large marshalling calculation amount and long consumed time in multi-line-segment matching can be overcome.