73 results about "Three dimensional television" patented technology

A three-dimensional television system includes an acquisition stage, a display stage and a transmission network. The acquisition stage includes multiple video cameras configured to acquire input videos of a dynamically changing scene in real-time. The display stage includes a three-dimensional display unit configured to concurrently display output videos generated from the input videos. The transmission network connects the acquisition stage to the display stage.

The invention discloses a method for automatically detecting a three-dimensional television (3DTV) video program format, which comprises the following steps of: 1, acquiring a frame image and judging whether the entropy of the frame image is greater than a first preset threshold value in the preset interval, if so, continuously executing, otherwise, returning; 2, equally dividing the frame image into n blocks; 3, respectively calculating linear correlation coefficients among the n blocks; 4, respectively judging whether a correlation coefficient of any two adjacent images in the n blocks is greater than a second preset threshold value, if so, adding one to a first counter, otherwise, adding one to a second counter; and 5, repeating 1 to (4m-1) times, if the first counter is m, the left and right three-dimensional format is obtained, if the second counter is m, the upper and lower three-dimensional format is obtained, otherwise, a two-dimensional format is obtained. In the method, whether the color is rich is judged according to the entropy of the image and the similarity between the images is judged according to the correlation coefficients between the image blocks, so the method is accurate and rapid.

The invention discloses a method and a system for realizing three-dimensional fitting based on an intelligent three-dimensional television, wherein the method comprises the steps of: obtaining point cloud data of a user and try-on clothes by means of a somatosensory camera connected with the intelligent three-dimensional television, and establishing a three-dimensional model of the user and a three-dimensional model of the clothes respectively according to the point cloud data, wherein the point cloud data comprises depth map data, color information and color picture data; merging the three-dimensional model of the clothes and the three-dimensional model of the user together, and carrying out movement adjustment on the merged model by utilizing a bone tracking technology to generate a merged dynamic three-dimensional fitting model; and generating live video information by aligning the depth map data with the color picture data obtained by the somatosensory camera, merging the dynamic three-dimensional fitting model and the live video information together, and displaying the merged result on the three-dimensional television. The method and the system are real in display effect, low in cost, wide in application range and easy to popularize and use.

The invention discloses a method for converting 2D video into 3D video in a three-dimensional television system, which comprises the following steps: (1) obtaining a 2D video file to be converted, which is compressed by a video coding standard; (2) decoding to obtain original video, extracting the motion vector information of each 4*4 pixel block from a video decoder and converting the motion vector information into the motion amplitude; (3) describing an initial depth figure of each frame image by the motion amplitude; (4) iterating an edge correction filter wave to obtain a clear, accurate and dense depth figure of an object edge and finishing the expression of the 3D video. The invention obtains the initial depth figure by a middle result of the video decoder and well saves the processing time of signals and the cost of a final product; and an edge correction wave filter is designed so that the problem of obtaining the clear, accurate and dense depth figure of the object edge in an algorithm for obtaining depth based on an image is solved.

Disclosed is a motorized rehabilitation apparatus and method for disabled, impaired or injured individuals, which trains a proper gait, increases blood flow, relieves stress, and reconditions lower body muscles and joints. The device comprises a powered stationary bicycle having a seat, handle grips, and rotating foot pedals that receive motive input from an electric motor and user input. The device further includes a pair of thigh braces that are connected together between the user's thighs via a hingeable link and chain that controls and trains an individual's limbs through the pedal rotation. The disclosed method further combines the present bicycle device for rehabilitation in conjunction with visual stimuli in the way of a three dimensional television display that stimulates endorphins, relieves mental stress and allows the motive input from the bicycle and mild user input to exercise the limbs of a user without focusing on the rehabilitation activity.

The invention discloses a natural three-dimensional television system, which adopts a multi-destination stereo camera to attain a colorful image of a scene, adopts an image correcting module to compensate brightness and colors, adopts a content producing module to extract three paths of code streams as a main camera colorful image, a main camera depth image and the shade information of an auxiliary camera; adopts a standard coder to process layered coding, and transmits the generated compressed stream to the standard coder via a channel, to be analyzed and decoded into three paths of code streams; adopts a viewpoint reconstruction module to reconstruct the three paths of code streams into a main camera viewpoint, an auxiliary camera viewpoint and a virtual viewpoint, to be synthesized by a display module into an image adaptive to a display device, to be displayed on the display device. The invention has the advantages that the invention is compatible with traditional 2D system, has many sideward viewpoints for reconstruction and can confirm low transmission bit rate.

The invention discloses a method for encoding a range image in a stereo-television system. The method comprises the following steps: 1) the edge strength value of each pixel in the range image is calculated, and then the edge strength value of each macroblock is calculated based on the edge strength value of the pixel point; 2) all the macroblocks in the range image are divided into three types, i.e., strong edge macroblocks, medium edge macroblocks and weak edge macroblocks; 3) the lower quantification parameter is configured for the strong edge macroblocks, the medium quantification parameter is configured for the middling edge macroblocks and the higher quantification parameter is configured for the weak edge macroblocks; and 4) the range image is encoded by utilizing the video coding technique based on the quantification parameter configured for all the macroblocks in the range image. The lower quantification parameter is configured for the strong edge macroblocks, so that the edge information of the range image is effectively protected and the quality of the free viewport image description of the client is improved.

The present invention provides a code rate control method facial to video having multiple viewports, the aim of the effect code rate control inder the frame rate condition in the multiple viewport video code based on the previous determined code rate is achieved by improving the secondary rate-distortion model of the traditional video code, and adopting code rate control mode and picture constitution having two models and frame layer secondary code rate control method. Contrast to the traditional second rate distortion model, the improved rate distortion model of the invention has higher accuracy, effectively processing code rate forecast, the given video code rate control method is simply, having smaller calculated amount, maneuverability for processing effect code control in the multiple viewports video code. The code rate control method facial to video having multiple viewports of the invention is used for video communication field such as three-dimensional television, vectorgraph, machine vision, telemedicine.

The present invention realizes stereoscopic television broadcasting which can reproduce a stereoscopic image best in state of stereoscopic viewing and a receiver for the stereoscopic television broadcasting.In stereoscopic television broadcasting, a reference size of a display of a receiver is determined, images for right and left are displayed on the display with a reference size in a superimposing manner, and transmission is performed such that a distance between the same corresponding points of an infinite subject image is reproduced and displayed to be equal to an interpupillary distance of a human.

The invention discloses an improved high-resolution reconstruction method for calculating an integrated image, mainly solving the problem that the existing reconstruction method of calculating the integrated image has low resolution of a reconstructed image and high complexity of reconstruction. The improved high-resolution reconstruction method comprises the steps that: element subimage pixel points are mapped on a reconstructed image plane by a virtual pinhole array, and a discrete point-mode planar image consisting of zero pixel points and non-zero pixel points is reconstructed; the non-zero pixel points in the image are judged in a point-by-point manner, and pixel values thereof are superimposed on the zero pixel points in eight adjacent pixel points; the average pixel value of the zero pixel points is worked out as a new value, and the zero pixel points are converted into the non-zero pixel points; the steps are repeated to obtain the reconstructed image; and the planar position of the reconstructed image is transformed, the planar images with different depths are reconstructed, and a three-dimensional image of an object is integrated and restored. The method has the advantages of high resolution of the reconstructed image, accurate image and low calculating complexity of reconstruction, and can be used for the fields of three-dimensional image display and three-dimensional television and target tracking display and the like.

The invention discloses a depth integration and curved-surface evolution based multi-viewpoint three-dimensional reconstruction method. The method comprises the following steps: firstly, calibrating a camera array consisting of depth cameras and visible light cameras, projecting depth maps obtained by the depth cameras to a viewpoint in the array by using calibration parameters so as to obtain an initial depth map of the viewpoint, and then obtaining an initial depth curved-surface according to the initial depth map; secondary, defining a curved-surface evolution based energy function, wherein the definition of the energy function comprises the color consistency cost of a plurality of cameras, and the uncertainty and curved-surface smoothing items of the initial depth curved-surface; and finally, driving the depth curved-surface evolution through convexification and minimization on the energy function so as to obtain a final depth curved-surface, namely, three-dimensional scene information. According to the invention, the initial depth information and the color consistency cost of a plurality of cameras are simultaneously fused, therefore, the method is a three-dimensional reconstruction method by which scene space information can be effectively obtained, and can meet various application requirements in three-dimensional televisions, virtual realities and the like.

The invention relates to an upsampling method for the depth video compression of a three-dimensional television, and belongs to the field of video coding. The method comprises the following steps of: upsampling a depth video based on a color video to make a pixel point with similar color have a more similar depth value so as to ensure more accurate object edge depth value; and performing local smoothing on the reconfigured depth video to reduce noise in a synthetic three-dimensional effect. The upsampling method has the advantages that: the recovered depth video has a clearer object edge and higher local smoothing performance by using the relationship between the depth video and the color video, so that better three-dimensional visual effect can be achieved; the upsampling method is effective for various downsampling methods; and the quality of the depth video with high compression speed and low target bitrate can be well improved by the method.

The invention discloses a three-dimensional television-oriented gesture manipulation method. The method comprises the following steps: acquiring the coordinate of a hand by using a method based on movement information, a movement template, color or depth information or specific detection hardware, and starting identification of gestures if the hand is within the range of a manipulation distance according to detection; correcting error of the hand coordinate through template matching or a filtering algorithm; finishing identification of gesture meaning by adopting a subsequent gesture identification algorithm, wherein gesture identification is performed by adopting a method based on an artificial nerve network (ANN), a hidden Markov model (HMM), a supported vector machine (SVM) or dynamic time warping (DTW); transmitting an identification result for operating a three-dimensional television through a control algorithm.

The invention discloses a method for describing the virtual viewport image in a stereo-television system. The method comprises the following steps: 1) a left viewport texture image and a right viewport texture image are rotated to a virtual viewport to obtain the rotated image of the left viewport texture image and the right viewport texture image according to a left viewport range image and a right viewport range image; 2) the self-adapting interpolation is carried out to the left viewport texture image and the right viewport texture image to obtain the interpolation image of the left viewport texture image and the right viewport texture image; and 3) according to the interpolation image of the left viewport texture image, the superposition-type filling is carried out to the interpolation image of the right viewport texture image to obtain a virtual viewport image. By adopting the method, firstly, the left viewport texture image and the right viewport texture image are rotated to obtain the rotated image, then, the self-adapting interpolation is carried out to the rotated image to obtain the interpolation image, and finally, the superposition-type filling is carried out to the interpolation image to obtain the virtual viewport image. The method can effectively inhibit the noise caused by shading and quantization errors and improve the quality of the virtual viewport image description.

The invention discloses a device and a method for extracting a high-resolution depth map in real time based on image matching. The device comprises a binocular SDI (serial digital interface) camera and an FPGA (field programmable gate array) development board, wherein the binocular SDI camera is unidirectionally connected with the FPGA development board through two BNCs (bayonet nut connectors), and the FPGA development board is unidirectionally connected with a 3DTV (three-dimensional television) encoder server through a PCIE (peripheral component interface express) interface. The binocular SDI camera is used for acquiring images, the depth map is extracted on the FPGA development board in real time, and the acquired depth map is transmitted to the encoder server in real time. The method includes the operation steps: I, SDI analysis; II, stereoscopic matching; and III, WTA (wireless telephony application) optimal choice and depth map generation. High-resolution dual SDI input can be directly received, the high-definition video depth map is extracted in real time, the binocular SDI camera can be inserted onto a PC (personal computer) main board, the obtained depth map is directly inputted to the encoder server through the PCIE interface, and 3DTV application and implementation and popularization of real scenario reproduction are greatly accelerated.

The invention relates to a manufacturing method of a large LED (liquid emitting diode) screen of a 3D (three dimensional) television, wherein a cylindrical surface grid screen technology used in the manufacturing method of the large LED screen display of 3D television signals solves the technical problem of a cylindrical surface grid screen of an LED luminotron combinational pixel array with three primary colors of red (R), green (G) and blue (B) on the premise of guaranteeing the multi-view display of a three-dimensional television (3DTV). A large LED screen display method of the 3D television comprises the following steps of: selecting a combinational pixel array module set unit of three primary colors of red (R), green (G) and blue (B) LED luminotrons, corresponding to cylindrical surface girds with different sizes according to the sizes of pixel elements, covering the girds on the surface of the LED luminotron combinational pixel array with three primary colors of red (R), green (G) and blue (B) by corresponding inclined angels, and finally splicing and fixing an LED luminotron combinational pixel array unit with the surface of the cylindrical surface grid films in a corresponding sequence to form a large LED screen of the 3D television.

The realization of a three-dimensional television broadcast and its receiver are promoted for making it possible to reproduce a three-dimensional video image in good condition for a three-dimensional view. In a three-dimensional broadcast, the transmission is subjected to that a standard size of a display for a receiver is determined, that left and right images are overlapped and displayed at thesame position on the standard size display, and that the same corresponding points of an infinite distant image are reproduced and displayed at the same interval as that of human eyes.

The invention discloses a stereo matching method based on an image partitioning algorithm in a faster self-adaptive three-dimensional television system, aiming at obtaining partitioning information of a reference image and applying the partitioning information to the three-dimensional television system, wherein the method is better in instantaneity, accurate in obtaining depth information and strong in anti-interference ability for image noise (lighting, distortion and the like). The method comprises the following specific steps of: firstly, shooting left and right images using a parallel binocular camera and calibrating the images; secondly, calculating an initial parallax error by using an improved cross polymerization algorithm so as to obtain an initial parallax error image of a left image or a right image; thirdly, adopting the image partitioning algorithm based on a graph theory to partition the left image or the right image calibrated in the first step using the image partitioning algorithm based on the graph theory; and fourthly, carrying out median filtering to the initial parallax error image information obtained in the second step by using partitioned images so as to obtain a parallax error image of the left image or the right image needing to be matched.

The invention discloses a method for regulating audience perception depth of a three-dimensional image. A parallel camera is used for setting in a three-dimensional television system to generate a target image, and then, a reference image and the target image are horizontally moved simultaneously towards a center point of a connecting line of the reference image and the target image to obtain a horizontal sensing parallax error of a camera space; according to the geometrical principle of display of the three-dimensional television system, a method for expressing the audience perception depth by using the horizontal sensing parallax error is determined; and finally, according to the relationship between the horizontal sensing parallax error and the horizontal screen parallax error, the audience perception depth is converted into parameters of the camera space, therefore, audiences can regulate horizontal displacement, base line distance and focus parameters to regenerate a target imageso as to regulate the audience perception depth. Through experiments, different perception depths of three-dimensional images required by the audiences can be generated according to the method disclosed by the invention.

Disclosed herein are a 3D TV and a system using RF wireless communication and a method for synchronizing a 3D TV system using the same. In the 3D TV system using the RF wireless communication according to an exemplary embodiment of the present invention, two or more 3D TVs transmit and receive synchronous signals through the RF wireless communication, thereby locking the screen synchronization and synchronous signals of the 3D TVs. Thereafter, when the 3D TVs transmits the synchronous signals to the 3D spectacles, the synchronous signals including the time offset are transmitted, having different time difference. As a result, the 3D spectacles can be synchronized with images displayed on the 3D TVs by using time offset information.

The invention relates to a liquid crystal panel for a three-dimensional television. The liquid crystal panel is used for displaying each frame of picture by sequentially superposing a left-eye picture signal for left-eye watching, a first picture signal, a right-eye picture signal for right-eye watching and a second picture signal, wherein the first picture signal is a left / right-eye picture signal for simultaneous watching by the left and the right eyes, and the second picture signal is a blackboard signal. The invention further relates to a pair of shutter glasses used for the three-dimensional television. According to the liquid crystal panel and the pair of shutter glasses for the three-dimensional television, disclosed by the invention, the display brightness of the three-dimensional television can be increased.

The invention relates to a method for measuring left-right-eye luminance crosstalk values of a three-dimensional display device. The method includes the following steps: (1) displaying a test image on the three-dimensional television or the three-dimensional displayer, wherein the test image is divided into a left image body and a right image body, the left image body and the right image body are provided with corresponding test units respectively, and each test unit is provided with a first area and a second area; (2) enabling an image influenced by the crosstalk to serve as the right image body, enabling an image applying the crosstalk to serve as the left image body, and obtaining the luminance crosstalk value from the left eye to the right eye; (3) changing an input signal, enabling the image influenced by the crosstalk to serve as the left image body, enabling the image applying the crosstalk to serve as the right image body, and obtaining the luminance crosstalk value from the right eye to the left eye. The method has the advantages that the measuring steps are simple; the input signal is not required to be frequently changed; due to the adoption of a luminance difference dividing method, same interference factors in the computing process can be counteracted, and therefore the requirement for the measurement environment during measuring is not high.

A three-dimensional television display including an LED screen having an array of light sources where the resolution of glass-less three-dimensional television display may be improved through the use of multiple LED array parallax, selection of the disposition of LED arrays in the multiple LED array parallax, a diagonal parallax barrier and lenticular lenses.

The invention discloses a closed circuit three-dimensional television which is characterized in that the closed circuit three-dimensional television can be used for remotely viewing situations in front in an automotive vehicle (a steamship mast or an airplane aerofoil), so that the accident occurrence is decreased. The closed circuit three-dimensional television is provided with two cameras with zooming properties, which are arranged at the both sides of the front end of the automotive vehicle (the steamship mast or the airplane aerofoil). Output signals of the two cameras can be processed and sent to the same display for three-dimensional display. According to demands, a set of far infrared zooming cameras can be additionally mounted, and the output signals are sent to the other three-dimensional display for viewing simultaneously.

The invention discloses a laser scattering displayer. On the basis of the principle of the laser scattering displayer, lasers are used as a light source, the lasers are transmitted to pixel positions of a display screen through optical fibers, light transmission media made of special materials are arranged at the pixel positions, the media can generate physical or chemical changes under the action of currents or a magnetic field, the lasers are made to generate scattered light or transparent non-scattered light, and when the scattered light is distributed at each pixel position, the scattered light is used as pixels; when the scattered light does not exist, the pixel positions are transparent and used as laser paths, the existence of the scattered light determines whether the pixels are turned on or off, a plurality of the pixels form images, and image restoration is achieved. The laser scattering displayer is simple in production process, low in cost and suitable for television screens, computer screens, phone screens, electromechanical instruments and the like. The designed product is stable and reliable in performance and durable in use. The laser scattering displayer is more suitable for 3D televisions, three-dimensional televisions in the future and the like.

The invention discloses a three-dimensional lens changing an ordinary camera to a three-dimensional telecamera. The three-dimensional lens comprises a first stage convex lens varying field which reduces a relative large lens and a relative large field angle of an original camera, a second stage central reflector split-field varying field, a third stage forward diverting varying field, and a fourth view-field widening varying field. Thus, the ordinary camera is equivalent to be changed into a twin lens camera which can record three-dimensional programs conveniently. Matching with a three-dimensional television, people can enjoy lifelike three-dimensional programs. The three-dimensional lens is simple in structure, convenient in usage, low in cost, and provides conditions for popularizing three-dimensional televisions as soon as possible.

The embodiment of the invention discloses a method, device and system for controlling display of a graphic text in a three-dimensional television, relating to the technical field of televisions and being used for controlling the depth position of the display of the graphic text, wherein the method comprises the steps of: receiving a message carrying depth indication information, wherein the depthindication information is sent by a server and used for indicating the depth position of the display of the graphic text in a three-dimensional view; obtaining the depth indication information from the message carrying the depth indication information; and controlling the depth position of the display of the graphic text according to the depth indication information. The embodiment of the invention can be used for controlling the depth position of the display of the graphic text to ensure that the graphic text can be displayed in front of video and the display quality does not become bad.

The invention discloses a three-dimensional television and a transmission box control method thereof. The three-dimensional television comprises a display screen, a television main board, a transmission box and stereo glasses, wherein the television main board is connected with the transmission box by a communication signal wire, a data signal wire and a synchronous signal wire, and transmits display screen characteristic data to the transmission box by the data signal wire; and the transmission box reads corresponding screen response delay data from a data storage unit according to the display screen characteristic data transmitted by the television main board, regulates the delay of a synchronous signal according to the read screen response delay data, and transmits the regulated synchronous signal to the stereo glasses, thereby controlling the enabling time of the stereo glasses. The embodiment of the invention can dynamically regulate parameters of the transmission box of the three-dimensional television, so that the transmission box can be matched with the display screens with different response time values to be more compatible with the display screens with different characteristics.