219 results about "Multi perspective" patented technology

Systems and methods are described for optimizing network data transfers using multiple classes of network resources and network intelligence gathered and integrated by a multi-perspective network optimizer so as to maximize the performance, scalability and commercial controllability and minimize the cost of network data transfers in heterogeneous networks such as the internet.

The invention belongs to the navigation field, and provides an electronic map looking down angle display control method and equipment, and the said method comprises: receiving the switch instruction of the electronic map looking down angle, switching the corresponding prospective projection calculation function, and generating the local three dimensional guide navigation image through the location data and three dimensional data of the surrounding equipment, displaying the said three dimensional guide navigation image. It is used in navigation field, provides an electronic map looking down angle display control method and equipment, and the said method goes like this: receiving the switch instruction of the electronic map looking down angle, switching the corresponding prospective projection calculation function, and generating the local three dimensional guide navigation image through the location data and three dimensional data of the surrounding equipment, displaying the said three dimensional guide navigation image. It increases guide navigation effect, meeting the requirement of multi perspective observation of consumers.

A camera that is adapted to present a preview image is provided. The camera has a trigger adapted to generate a trigger pulse and an image capture system for capturing images of a scene. A viewer is adapted to present one image to a first viewing area and another image to a second viewing area. A controller is adapted to receive a first trigger pulse and to cause the image capture system to capture a first image of the scene in response to the first trigger pulse. The controller is also adapted to receive a second trigger pulse and to cause the image capture system to capture a second image of the scene in response to the second trigger pulse and to cause the viewer to simultaneously present the first image to the first viewing area and to present the second image to the second viewing area. An observer positioned with a first eye in the first viewing area and a second eye in the second viewing area can detect parallax differences between the first image and the second image.

A monolithic compound mirror structure is used in an optical code reader employing an imager that captures images of items bearing optical codes in a viewing volume of the optical code reader. The monolithic compound mirror structure comprises a plurality of highly reflective surfaces positioned on the structure so that the structure can be positioned in a field of view of the imager in the optical code reader and oriented so that two or more of the plurality of highly reflective surfaces appear in the field of view of the imager, to thereby split the field of view of the imager into two or more different views into the viewing volume. The different views into the viewing volume may be direct off of the monolithic compound mirror structure or indirect off of one or more intermediate mirrors.

The invention discloses a method for conducting real-time tracking on faces by a monocular camera. The method comprises the steps that firstly, the camera is opened so as to search for whether the faces exist around the camera or not, images collected by the camera are transmitted to an image processor, the image processor calls an image processing program to conduct image compression, three AdaBoost cascade connection strong classifiers based on Haar characteristics are loaded on the image processing program, skin color detection is carried out on all the compressed images, a detected window is used for detecting the faces with multiple angles through the three AdaBoost cascade connection strong classifiers, after the faces are detected, real-time tracking is carried out on face targets, the difference between the central point coordinates of a face target area and the central point coordinates of the whole images is compared, the camera is adjusted to enable the central point coordinates of the face images to be approximately aligned with central point coordinates of the images, and real-time tracking on the faces is achieved. The method has the advantages that the tracking method is simple, the calculated amount is small in the tracking process, the hardware structure is simple, and real-time tracking of the face targets can be well achieved.

A computer implemented method uses a database of detailed, comprehensive utility operating and financial information. The method comprises: (1) feature based matching or similarity based benchmark and focus group selection; (2) a performance assessment procedure comprising multi-perspective analysis; and (3) multi-attribute business profiling and performance improvement potential analysis. As part of the performance assessment step, data corresponding to different utilities in a selected benchmark group are compared with each other to find their strengths and weaknesses. Interpretation of these gaps provides the cause of such gaps. Composite ranking analysis is used so that a composite score of at least one utility business is obtained.

The invention discloses a water level-close aircraft maneuvering flight visual scene simulation method, and belongs to the field of computer simulation. The method comprises the following steps of: step one, establishing a three-dimensional scene model; step two, configuring a three-dimensional model and manufacturing a three-dimensional special efficacy; and step three, implementing the simulation process. According to the water level-close aircraft maneuvering flight visual scene simulation method disclosed by the invention, the water level-close aircraft maneuvering flight is subjected to visualization visual scene simulation, the defect that the traditional real object simulation has nonrepeatability and high risk is solved, and the water level-close aircraft maneuvering flight visual scene simulation method has the characteristics of high efficiency, repeatability and low cost; and real ocean geographic information is added in the three-dimensional scene model creation, thus the simulation environment is more real; and the flight posture of air route of individual aircraft can be displayed and deduced, viewing angles can be switched among a plurality of flight air routes of a plurality of aircrafts, and all-dimensional and multi-angle simulation viewing angles can be provided.

The invention provides a method for playing multi-angle video and a system, which belong to the technical field of communication. The method for playing the multi-angle video comprises the following steps: acquiring a plurality of video files with different angles; processing the video files with different angles so as to enable the video files to have the same video initial point and the video files to meet the video format of a scheduled video player; and according to a playing angle selected by a user, switching to a corresponding video file for playing. The embodiment of the invention is capable of improving the perception experience, so that users can obtain the video with the angle which is expected by the users to see.

The invention provides a real-time multi-view network hotspot event analyzing device and an analyzing method thereof. The analyzing device comprises a network event data collecting device, a network event data preprocessing device, an event central processing device and an output device. The analyzing method comprises a network event information collecting step, a network event spotting step, a network event central initializing step, a network event similarity comparing step, a network event multi-center generating step and a hotspot event outputting step. With the device and the method thereof adopted, hotspot event information currently published on the internet can be real-timely spotted and the developing process of the event can be shown in multi-views to help network management personnel to know the trend of network hotpot events more comprehensively.

In a method for synchronized multi-perspective image capture, an ad hoc network is formed between a plurality of image capture devices. A leader is then selected from the plurality of image capture devices. The leader sends the other image capture devices (termed “followers”) a capture message. In response to the capture message, the follower image capture devices synchronously capture images of a common subject matter. The follower image capture devices send their respective captured images to the leader. The leader then consolidates the captured images. In this manner, simultaneous and/or synchronized multi-perspective image capture of a common subject matter is accomplished without requiring expensive or specialized devices.

The invention discloses a 3D (three-dimensional) reconstruction method for stereo/multi-view videos based on an FPGA (field programmable gata array), which comprises the following steps: 1) carrying out stereo shooting on a natural scene by using a binocular camera; 2) through a gigabit Ethernet, transmitting two channels of color image information in a BT1120 data forma to the FPGA for processing; 3) through stereo matching, obtaining two channels of depth information of camera images; 4) according to an algorithm, carrying out multi-view reconstruction and view compositional operation; and 5) carrying out outputting through a HDMI (high-definition multimedia interface), and providing multi-view stereo display on a naked-eye 3D display device. According to the invention, the binocular camera is adopted for carrying out stereo shooting, so that the stereo display of a real scene can be realized; due to the parallel architecture of the high-efficiency algorithm and the FPGA, an effect of real-time display can be achieved; and the 3D stereo display device can provide a multi-user & multi-angle naked-eye multi-view stereo display effect.

The invention discloses a nano-scale three-dimensional shape measurement method based on a scanning electron microscope. The scanning electron microscope currently widely used is organically combined with the digital photogrammetry in macrocosmic measurement, the characteristics that the scanning electron microscope is easy to operate and can be used to take two-dimensional pictures with high amplification factor and large depth of field are fully utilized, and the advantage that digital photogrammetry can be used to automatically and precisely reconstruct the complete three-dimensional data of the surface of an measured object from the pictures taken from multiple angles is fully exerted. A group of sample pictures is obtained by using the scanning electron microscope to take sample pictures from multiple angles at the same amplification factor, the distortion of the pictures are corrected, the corrected pictures are reconstructed by using the digital picture correlation algorithm, and the complete three-dimensional point cloud data of the sample surface is reconstructed on the basis of the corrected pictures and pre-calibrated system parameters, thus the dense point cloud data of three-dimensional shape in the local range of a sample is measured accurately at the nano scale, and the three-dimensional measurement of the shape of a nano-scale micro device is realized.

The invention relates to a method for measuring railway tank car volume based on computer vision. The method comprises the following steps that the surface of a tank car is provided with a plurality of marking points with identical patterns and coding points with different patterns; a coding point ruler with two different patterns is arranged beside the tank car; a digital camera is adopted to take pictures of the tank car from multiple angles, and an overlapped coding point area is formed between every two adjacent pictures; each picture is input to a computer for image processing, and three-dimensional point coordinates of all coding points and marking points on an image are respectively established according to a computer stereovision three-dimensional reconstruction method based on image sequences so as to acquire three-dimensional point data on the surface of the tank car; three-dimensional shape of the outer surface of the tank car is reconstructed according to the three-dimensional point data; and the tank car volume is calculated according to the three-dimensional shape of the outer surface of the tank car and measured wall thickness of the tank car. The method has the advantages that the method has convenient operation and simple use and solves the problem that the prior standard measuring instrument is susceptible to human-induced factors during operation and has unstable measuring results; moreover, the method ensures that volume uncertainty is less than 0.2 percent.

A method for processing broadcasts comprises receiving a broadcast of the program containing a plurality of perspectives of the program and presenting at least one of the plurality of perspectives to a viewer. The method further includes automatically recording the plurality of perspectives in a storage device and playing alternate recorded perspectives for the viewer without interrupting the recording of the broadcast. A system for recording a broadcast containing a plurality of perspectives of a program is also disclosed.

The invention provides a hand-drawn scene three-dimensional modeling method combining multi-perspective projection with three-dimensional registration. The three-dimensional modeling method comprises steps that standardized preprocessing is performed on all three-dimensional models in a three-dimensional model base, virtual cameras are arranged at vertexes of a regular polyhedron, projection pictures at all angles of each three-dimensional model are shot to represent visual shapes of the three-dimensional model, visual features of all the projection pictures of each three-dimensional model are extracted, and a three-dimensional model feature base is established according to the visual features; users draw two-dimensional hand-drawn pictures of each three-dimensional model of a three-dimensional scene needing showing and character labels of the two-dimensional hand-drawn drawings by hands, images are shot through cameras, processing on image regions is performed, visual features of hand-drawn pictures are extracted, character label regions subjected to processing serve as retrieval key words, similarity calculation is performed on visual features of hand-drawn pictures and three-dimensional model features of the three-dimensional model feature base, retrieval is performed to obtain three-dimensional models of a three-dimensional scene, three-dimensional models with largest similarity are projected to corresponding positions through a three-dimensional registration algorithm, and then show of three-dimensional modeling of the hand-drawn scene and a three-dimensional is achieved.

Rebinning methods and arrangements are provided that significantly improve the 3D wavelet compression performance of the image based rendering data, such as, e.g., concentric mosaic image data. Through what is essentially a selective cutting and pasting process the image data is divided into stripes that are then used to form a set of multi-perspective panoramas. The rebinning process greatly improves the performance of the cross shot filtering, and thus improves the transform and coding efficiency of 3D wavelet codecs. While the region of support after rebinning may cease to be rectangular in some cases, a padding scheme and an arbitrary shape wavelet coder can be implemented to encode the result data volume of the smart rebinning. With an arbitrary shape wavelet codec, the rebinning outperforms MPEG-2 by 3.7 dB, outperforms direct 3D wavelet coder by 4.3 dB, and outperforms a reference block coder (RBC) by 3.2 dB on certain tested concentric mosaic image scenes. Hence, the rebinning process nearly quadruples the compression ratio for selected scenes. Additional methods and arrangements are provided that include selectively dividing the image data into slits and rebinning the slits into a huge 2D array, which is then compressed using conventional still image codecs, such as, JPEG.

The invention discloses a method for presenting multi-dimensional data of regulation and control integrated systems of power grids. The method has the advantages that multi-dimensional data models of the regulation and control integrated systems of the power grids are built to provide foundations for presenting the multi-dimensional data at first, then representation themes of the multi-dimensional data are established, rich presentation modes of presentation means such as WEB and reports are combined with comprehensive presentation dimensions provided by the multi-dimensional data models, and accordingly the data can be comprehensively and abundantly presented in a multi-level manner; the method is combined with multi-dimensional data linkage, multi-dimensional analysis and multi-dimensional drill-through presentation technologies, so that the theme data can be comprehensively presented and analyzed from multiple levels, multiple angles and multiple aspects.

The invention discloses a positioning method of a working object and a target of a substation based on infrared and visible light fusion. The technical scheme is as follows: by using a visible light and infrared sensor system deployed in the substation site, real-time images are collected, and a distributed image processing platform is used to remove the noise, fuse and enhance the pretreatment, then the target and the background are segmented, target features are extracted to detect a site intrusion target, and then dynamic target identification, lactation and tracking are performed. It is divided into three stages: dynamic target detection and identification based on 3D scene and multi-spectral image fusion, target location based on a multi-camera and target tracking based on a 3D scene,and a corresponding algorithm prototype is given. The invention adopts a fusion method based on a three-dimensional scene model, utilizes the spatial corresponding relationship between visible lightand infrared images to transform, solves the fusion problem under the condition of large field of view and multiple angles, obtains a better effect, and obtains more complete and reliable image information.

The invention discloses a three-dimensional (3D) panoramic model generating method, which comprises the steps of picture model building: articles are shot in multiple angles, and in addition, a 3D model of the shot articles is created; model output: after background pictures, background music and operation press buttons are guided into the 3D model, and the 3D model is output again; and 3D panoramic gathering: a spherical panoramic image is manufactured, in addition, interaction hotspots are added onto the spherical panoramic image, and the hotspots are linked to the 3D model of the shot articles, and a 3D panoramic model is issued. The 3D panoramic model generating method applies the modeling technology and the 3D panoramic gathering technology, and has the characteristics that the work procedure is simple, the operation is convenient, and the true feeling is high. The 3D panoramic model generating method has the advantages that two technologies are perfectly merged, the interaction and the immersion feeling of users are improved, the plug-in is not needed during the web end network display, and the plug-in installation is needed in the prior art. In addition, workers for implementing the 3D panoramic model generating method only need a little shooting technology and some 3D bases, the mastering of the 3D modeling technology is not needed, and the labor cost is saved.