WO2012068784A1 - 立体与平面图像混合信号在超大屏幕上显像的同步方法 - Google Patents

立体与平面图像混合信号在超大屏幕上显像的同步方法 Download PDF

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Publication number
WO2012068784A1
WO2012068784A1 PCT/CN2011/070097 CN2011070097W WO2012068784A1 WO 2012068784 A1 WO2012068784 A1 WO 2012068784A1 CN 2011070097 W CN2011070097 W CN 2011070097W WO 2012068784 A1 WO2012068784 A1 WO 2012068784A1
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signal
signals
stereo
frame
image
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PCT/CN2011/070097
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English (en)
French (fr)
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林春育
高川
魏新刚
党甲武
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深圳市创凯电子有限公司
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Publication of WO2012068784A1 publication Critical patent/WO2012068784A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/361—Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background

Definitions

  • the invention relates to a large screen developing technology, which mainly relates to a method for synchronizing the stereo and planar image mixed signals on a large screen by controlling the liquid crystal shutter switch glasses through the edge fusion image controller.
  • Edge blending technology is to overlap the edges of a group of projectors and display a whole picture with no gaps, brighter, larger and higher resolution through fused image processing technology.
  • the effect of the image is like one.
  • the main function of the edge fusion is to gradually reduce the brightness of the overlapping parts of the two projectors, so that the brightness of the whole picture is consistent. .
  • the whole picture composed of edge blending technology has the following performance advantages: I. Increase the image size, which can form a large-area display screen. The images projected by multiple projectors can form an infinite display area and maintain the whole picture. The perfection and consistency of color. 2. Increase the resolution of the display.
  • the resolution of the displayed image is the sum of the resolutions after each projection is subtracted from the overlapped area pixels.
  • the large screen completed by the edge blending technology eliminates the physical gap between the screens of the traditional large screen stitching because of the whole screen, so that the screen display image remains intact, and the optical gap is eliminated, and the terrain is displayed. Maps, pipeline diagrams, and simulation information ensure the integrity and aesthetics of the displayed image.
  • Edge-blended image controller is the core that realizes multiple channels of different signals to display seamless widescreen on a large screen.
  • Image control processing device has the functions of edge blending processing of external image signals, multiple input source selection, seamless switching, image processing, signal window manipulation, etc. It can meet the simultaneous display of multiple windows supporting multiple signals to seamlessly blend widescreen signals.
  • the image controller includes image data copying, generating overlapping projection areas, edge feathering of overlapping images, acquisition of external image signals, scaling, window manipulation, signal source selection, and the like.
  • the large-screen display system with the edge-blended image controller as the core can realize the following functions: (1) multiple video signal inputs (including planar images and stereo image signals), and the image controller can be configured as multiple signal sources according to the system.
  • Input one input can be processed at high resolution.
  • Sources include: VGA, Video and DVI, HD K SD, HI) SDI and more.
  • Multiple channel signal output the image controller can set the number of output channels according to the number of projectors that need to be supported.
  • Effect control on various signals includes: window manipulation, image scaling, edge blending, and the like.
  • the stereoscopic display technology can be divided into two types: the naked-view viewing and the glasses-type viewing.
  • the naked-view stereoscopic display allows the viewer to enjoy the stereoscopic effect because no additional equipment is needed, and is generally welcomed by consumers.
  • the naked-eye stereo technology is the development direction of 3D display technology, but the development of naked-eye display technology is still immature.
  • the glasses-type stereo display technology has developed earlier, and the solution is relatively mature.
  • the specific technology can also be divided into: spectral type, passively polarized light type, active shutter type and so on.
  • the glasses-type visualization of stereoscopic images requires the wearing of specific glasses, such as spectroscopic lenses with different lenses, passively polarized lenses with circularly polarized or linearly polarized lenses, and active shutters with liquid crystal switch shutter glasses.
  • the principle of stereo imaging is to use two cameras to simulate the principle of observing things by human eyes. Two pictures with slightly different viewing angles are output to the two eyes of the person during playback, and the technical method ensures that during playback, the left side The picture taken by the camera only enters the viewer's left eye, and the picture taken by the right camera only enters the viewer's right eye, allowing the viewer's two eyes to view only the defined picture, thus forming a stereoscopic view in the viewer's mind. Vision.
  • Active shutter stereoscopic display technology also known as split-shading or liquid crystal time-sharing technology
  • the liquid-crystal glasses are two LCD screens that can be separately controlled to open and close, and the normal display is transparent. State, it will turn black after power-on.
  • the liquid crystal glasses are receiving
  • the transparency and opacity of the lens are controlled by energization to achieve the purpose of blocking an eye
  • the content of the stereoscopic signal to be played is turned black when the left eye picture is played, and vice versa.
  • the right eye picture signal is played, the left eye lens of the liquid crystal glasses is turned black and turned off, thereby achieving accurate synchronization between the stereoscopic playback content and the viewer's eyes, and achieving the visual effect of stereoscopic imaging.
  • the signals of the left and right eye images appear alternately on the display screen.
  • the left screen is played, the left lens of the liquid crystal glasses is opened, the right lens is closed, and the left eye of the viewer sees the picture that needs to be seen by the left eye, the right eye. None can be seen.
  • the right eye screen is played, the right lens of the LCD glasses is opened, the left lens is closed, and the left eye does not see the screen, so that the left and right eyes respectively see the left and right respective images, thereby achieving a 3D stereoscopic effect.
  • This control alternation process can only ensure that the single-eye receiving frequency is not lower than 60Hz to achieve a coherent and flicker-free stereoscopic picture when the control alternation process is only 120 times/second or more. Therefore, the active 3D display technology requires at least a refresh rate of the signal output. Up to 120Hz
  • the stereo signal source is the basis for realizing the stereoscopic display system.
  • the general stereo signals are divided into two types, a composite stereo signal and a separate stereo signal.
  • the composite stereo signal refers to a stereo video signal including left eye information and right eye information. Different information is separated by frame, the odd frame is the left eye, the even frame is the right eye signal, and the signal content is played by the left and right eyes alternately.
  • Separating signals means that each image consists of two independent video signals, that is, two stereo signals, one is a video signal containing only left-eye information, and the other is a video signal containing only right-eye information. When playing a separate signal, two different signal files are played simultaneously.
  • the basic principle of using the liquid crystal shutter switch mode to realize stereoscopic display is as follows:
  • the signal source adopts a composite stereo signal with left and right eye information intervals.
  • the playback device transmits the infrared frame through the infrared transmitter when playing the odd frame left eye signal.
  • the identification signal of the left eye content when the liquid crystal shutter switch glasses receive the infrared signal, the eye piece of the right eye is closed, and only the signal enters the left eye through the glasses.
  • the playback device plays the right eye signal of the even frame, the infrared device passes the infrared signal.
  • the transmitter transmits an identification signal of the content of the right eye
  • the liquid crystal shutter closes the glasses of the left eye when receiving the right infrared signal, and only allows the signal to enter the right eye through the glasses, so that the left and right eye signals respectively enter the left eye.
  • the right eye is self-contained to achieve a stereoscopic effect.
  • it is often necessary to display multiple external image signals on a large screen composed of multiple projectors while being compatible with displaying stereo signals, that is, a planar image signal appears simultaneously on the entire large screen.
  • stereo image signals This functional requirement often requires the image controller to process both the control plane image signal and the display and control stereo image signals, and organically combine the two signals into a complete large screen.
  • the image controller processes both the planar signal and the stereo signal. If the external stereo input signal is a composite stereo signal, in order to ensure that the viewer can have a three-dimensional experience, the entire system must also have a device for controlling the synchronization signal of the liquid crystal shutter to ensure synchronous control of the stereo signal.
  • active shutter-type stereoscopic imaging is realized by transmitting an identification signal between an integrated stereoscopic signal playing device and a liquid crystal shutter switch glasses through an infrared transmitter.
  • the infrared transmitter transmits a stereoscopic identification signal to control the liquid crystal switch glasses by: A) controlling the infrared emitter by playing a computer with a composite stereo signal; this mode is playing the device (often a computer) while playing the composite stereo signal content.
  • the infrared stereo synchronization control signal of the transmission shutter switch is controlled by a specially configured infrared emitter.
  • This way of mode control the transmission of the synchronization signal
  • the limitation is: when supporting a seamless large screen composed of multiple projectors, the computer used to play the composite stereo signal does not have enough processing plane and stereo signals.
  • the resources and capabilities to complete the edge-related technology to achieve seamless integration of large screens, that is, the computer used to play stereo signals can only support the display and synchronization control of a projector, can not achieve the plane and on the edge of the fusion large screen Mixed display of stereo signals.
  • the infrared transmitter is configured by a special port specially designed by the projector, and the stereo synchronous signal is emitted while the projector is playing the stereo signal, and the synchronous signal is serially transmitted through multiple projectors when the large screen is displayed.
  • Realizing the synchronous control of the stereo signal can meet the requirements of the edge-blended large screen composed of multiple projectors, and can also realize the display of the active stereo signal.
  • the limitation of this method is that: the stereo signal and the plane signal cannot be processed at the same time, that is, the plane signal and the stereo signal cannot be mixed and displayed on a large screen, and can only be displayed by switching between different scenes in two different states.
  • the flat signal cannot be displayed at the same time, and vice versa.
  • the stereo signal developed by the A mode is limited by the processing capability of the computer that plays the stereo signal, and the size of the display screen is relatively small, and often only one projection can be used to display a limited space.
  • the B mode can realize stereoscopic display of a large plane, it is not possible to simultaneously process multiple signal planes or simultaneous display of stereo signals.
  • the method of controlling the active stereo synchronous infrared signal transmission on the edge fusion image controller can meet the requirements of constructing a large screen composed of multiple projectors, and at the same time can meet the technical requirements of simultaneous display of multiple planar and stereo signals.
  • the synchronization mode of the transmission signal display determines the functions that can be realized by the whole system. It is necessary to satisfy the large screen composed of multiple projectors for the screen content to be displayed, and also to display compatible display of multiple different screen signals and stereo signals. It is also necessary to maintain the synchronous control of the stereo signal and the liquid crystal shutter. Summary of the invention
  • different projectors display different parts of the overall picture, and complex processing of all input image signals is required, including acquisition, scaling, and superposition of plane signals of different resolutions, and then dividing into screens.
  • the different positions are output with edge blending techniques.
  • the related work on image processing is completed by the edge-blending image controller. Therefore, the edge-blending image controller is used to transmit the synchronous signal control of the active stereo composite signal, which is an effective way in high-end simulation applications.
  • the method can process multiple planes and composite stereo signals to meet the problem of mixed display of multiple planar stereo signals, and complete the output of the edge fusion technology to realize large screen display, and the stereo synchronization signal of the infrared emitter driven by the device. It also ensures that the stereo signal is fully displayed anywhere on the entire large screen.
  • the method for realizing the invention is: the image acquisition unit collects the stereo signal and the plane signal of different formats, converts the stereo signals of different formats into one frame left eye, and a plane signal alternately appearing in the right eye of one frame, and transmits the signal to the stereo peer processing.
  • the stereo input port of the unit, the plane signal is input to the plane input port, the stereo synchronization processing unit changes the size and position of the signal according to the preset setting, and the left eye signal and the left eye signal, the right eye signal and the right eye between different stereo signals are The signals are superimposed separately, and the left eye signal of the stereo signal is superimposed with the plane signal, the right eye signal and the plane signal, respectively.
  • the superimposed signal is transmitted to the image fusion unit in combination with the frame synchronization signal, and the different output units in the image fusion unit intercept the phase 5 partial image and generate the coincidence region and the fusion band reference frame synchronization signal to be synchronously output to the display device.
  • the stereo synchronization control unit generates a synchronization signal for controlling the liquid crystal shutter switch according to the frame synchronization signal, and outputs a stereo synchronization signal through the infrared emitter.
  • the device for implementing the present invention is: comprising an image acquisition unit, a stereo synchronization processing unit, an image fusion unit and a stereo synchronization control unit connected in sequence, wherein the image acquisition unit converts the collected stereo signals of different external formats.
  • the stereo synchronization processing unit 10 is replaced by a planar signal, and combined with the frame synchronization signal is transmitted to the stereo synchronization processing unit, and the stereo synchronization processing unit receives; the different image stereo signals and the planar signals change the size and position of the signal according to the preset, and are combined with the frame after superposition.
  • the signal is transmitted to the image fusion unit, and the image fusion unit intercepts the corresponding partial image by different output units and generates the coincidence region and the fusion frame reference frame synchronization signal to be synchronously outputted to the display device, and the stereo synchronization control unit converts the frame synchronization signal into the infrared of the liquid crystal shutter switch. control signal.
  • the invention has the beneficial effects that the method of outputting the control signal to the liquid crystal shutter switch by the image controller can achieve the following effects: 1)
  • the super-large plane image of the active stereo signal can be displayed. Different from the way of controlling by computer, because the output resolution of the computer is limited, if the active stereo signal picture of the large plane is to be displayed, the original picture needs to be cut and enlarged, so that the synchronization between the partial pictures is difficult to control. The resulting picture often 'can't produce a stereo effect.
  • This method generates a synchronization mode by the image controller.
  • the function of the image controller is to process the externally input signal, a large-scale display screen is constructed, and the synchronous control signal is sent at the same time as the output, which can satisfy At the same time as the large screen is displayed, synchronous control of the stereo signals is realized. 2) Multiple planar or stereo signals can be processed simultaneously. Different from the way to send a synchronization signal through the projector, when displaying multiple signal contents, the computer needs to process and output the external signal, and the synchronous output of the projector cannot control the external digital analog signal collected by the image controller, including the stereo signal.
  • FIG. 1 is a block diagram showing the overall principle of the present invention.
  • Figure 2 is a block diagram of signal processing of the image acquisition unit of Figure 1.
  • FIG. 3 is a signal processing diagram of the stereo synchronization processing unit of FIG. 1, showing two stereo signals in a multi-channel stereo signal.
  • - Figure 4 is a signal processing diagram of the stereo synchronization processing unit of Figure 1, showing one stereo signal and one channel signal in the multi-channel stereo signal.
  • FIG. 5 is a signal processing diagram of the stereo synchronization signal generating unit of FIG. 1, wherein 5a is a frame synchronization signal, and 5b is an infrared waveform of a certain type of liquid crystal switching glasses.
  • the synchronization method of the present invention is: receiving different stereo signal format inputs, and decoding into a planar signal format in which left and right eyes alternately appear, simultaneously producing The frame sync signal is used to mark the left eye frame and the right eye frame;
  • the left eye frame and the right eye frame signal between different stereo signals are respectively superimposed, and the left eye frame signal of the stereo signal and the plane signal, the right eye frame signal and the plane signal are respectively superimposed, and the superposed signal is combined with the frame synchronization signal;
  • the image controller intercepts the corresponding partial image and generates a coincidence region and the fusion band reference frame synchronization signal to synchronously output to the display device, and generates a signal for controlling the liquid crystal shutter switch by the synchronization signal of each frame, and outputs a stereo synchronization signal through the infrared emitter.
  • the overall principle block diagram of the present invention is shown in Fig. 1, and includes an image acquisition unit 1, a stereo synchronization processing unit 2, an image fusion unit 3, and a stereo synchronization control unit 4.
  • the image acquisition unit 1 collects an external input signal.
  • the stereo signal is converted into a frame left eye, a frame right eye alternate plane signal combined with the frame synchronization signal, and transmitted to the stereo synchronization processing unit 2 .
  • the stereo synchronization processing unit 2 receives the different image stereo signals and the planar signals according to the size and position of the preset change signals, and superimposes the left eye signals and the left eye signals, the right eye signals and the right eye signals between the different stereo signals.
  • the left eye signal of the stereo signal and the f-plane signal, the right eye signal and the plane signal are respectively superimposed.
  • the superimposed signal is transmitted to the image fusion unit in combination with the frame synchronization signal, and the different output units in the image fusion unit intercept the corresponding partial image and generate the coincidence region and the fusion frame reference frame synchronization signal to synchronously output to the display device, and simultaneously generate the control liquid crystal according to the frame synchronization signal.
  • the synchronization signal of the shutter switch outputs a stereo synchronization signal through the infrared emitter.
  • the image acquisition unit 1 can receive different stereo signal formats (Frame sequential, Frame packing, Side-by-side, Checkerboard, etc.) Input decoding is alternated for left and right eyes.
  • the planar signal format, and the frame sync signal is generated to indicate the left eye frame and the right eye frame.
  • the stereo synchronization processing unit 2 changes the size and position of the planar signal transmitted from the image collection unit 1, superimposes the signals of the different channels on each other, and outputs a frame synchronization signal to the image fusion unit 3.
  • FIG. 3 is a two-way stereo signal processing diagram of the stereo synchronization processing unit 2, and the multi-channel signal processing manner is the same.
  • the stereoscopically converted left and right eye alternating plane signals, B and frame synchronization eight and B signals output by the image acquisition unit 1 are input to the stereo synchronization processing unit 2, and the stereo synchronization processing unit 2 extracts the stereoscopically converted left and right according to the frame synchronization A signal.
  • the left-eye signal of the plane signal A alternating with the eye is superimposed with the left-eye signal of the plane signal B alternated by the stereo-converted left and right eyes according to the frame synchronization B signal to generate a large picture "C left eye", according to the frame synchronization A signal
  • the right eye signal of the plane signal A alternated between the left and right eyes after the stereo conversion is extracted and the right eye signal of the plane signal B alternated by the left and right eyes extracted according to the frame synchronization B signal is superimposed to generate a large picture "C right eye” , "C left eye” and "C right eye” alternately output.
  • Frame Synchronization The C signal selects one of the larger values of frame synchronization A and frame synchronization B.
  • the stereo synchronization processing unit 2 extracts a left-eye signal of the left-eye alternating plane signal A after stereo conversion according to the frame synchronization A signal, and superimposes the plane signal B frame 1 to generate a large picture "C left eye” according to the frame synchronization A signal.
  • the right eye signal of the left and right eye alternating planar signals ⁇ is extracted and the planar signal B frame 1 is superimposed to generate a large picture "C right eye", and the next time stereoscopic processing unit 2 extracts according to the frame synchronization A signal.
  • the left-eye signal of the plane signal A alternated by the left and right eyes is superimposed with the plane signal B frame 2 to generate a large picture "C left eye”, and the plane signals of the left and right eyes alternately after the stereo conversion are extracted according to the frame synchronization A signal.
  • the right eye signal of A is superimposed with the plane signal B frame 2 to generate a large picture "C
  • the right eye ", "C left eye” and "C right eye” are alternately output.
  • the frame synchronization C signal is the same as the frame synchronization A signal.
  • Fig. 5 is a stereo synchronization signal generation unit 4 converting the frame synchronization signal into the infrared of the liquid crystal shutter switch The control number can change the waveform of the infrared control signal and control the glasses of different liquid crystal shutter switches.

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Description

立体与平面图像混合信号在超大屏幕上显像的同步方法
技术领域
本发明涉及超大屏幕的显像技术，主要是指一种通过边缘融合图像控制器控制液晶 快门开关眼镜实现立体与平面图像混合信号在超大屏幕上显像的同步方法。
背景技术
在指挥监控中心、 工业设计仿真领域要求亮丽的超大画面、 纯真的色彩、 高分辨率 的显示效果， 在进行超大屏幕或者超大面积的画面显示时， 特别是多个不同的信号同时 在一个超大屏幕进行显示时， 需要采用具备边缘融合技术的图像控制器。近年来兴起的 边缘融合技术是新的无缝拼接技术， 可以更好地改善了拼接图像的视觉效果。
边缘融合技术就是将一组投影机投射出的画面进行边缘重叠， 并通过融合图像处理 技术显示出一个没有缝隙 更加明亮、 超大、 高分辨率的整幅画面， 画面的效果就好象 是一台投影机投射的画质。 当两台或多台投影机组合投射一幅画面时， 会有一部分影像 灯光重叠, 边缘融合的最主要功能就是把两台投影机重叠部分的灯光亮度逐渐调低， 使 整幅画面的亮度一致。 采用边缘融合技术组成的整幅画面具备以下的性能优势： I、 增 加图像尺寸， 可以组成超大面积的显示画面， 由多台投影机拼接投射出来的画面可以组 成无限大的显示面积而保持整个画面的完美性和色彩的一致性。 2、 增加显示的分辨率， 展现出的图像分辨率由每台投影合成后的分辨率是减去交叠区域像素后的总和。
采用边缘融合技术完成的大屏幕， 由于是整幅屏幕， 消除了传统大屏幕拼接存在的屏幕 间的物理缝隙，从而使得屏幕显示图象整幅保持完整，更消除了光学缝隙，在显示地形、 地图、 管线图、 仿真信息时, 保证了显示图像的完整性和美观性。
边缘融合图像控制器是实现多路不同信号在完整大屏幕上显示为无缝宽屏的核心 图像控制处理设备。具备对外部图像信号的边缘融合处理、多路输入源选择、无缝切换、 图像处理、 信号窗口操控等功能， 可满足支持多个信号多个窗口以无缝融合宽屏信号为 背景的同时显示。 图像控制器包括图像数据复制、 生成重叠的投影区域、 重叠图像的边 缘羽化、 外部图像信号的采集、 缩放、 窗口操控、 信号源选择等等功能。 以边缘融合 图像控制器为核心构成的大屏幕显示***，可实现下列功能： （1)多个视频信号输入（包 括平面图像与立体图像信号）， 图像控制器可以根据***配置为多个信号源输入， 毎个 输入均可在高分辨下被处理。 信号源包括有： VGA, Video以及 DVI、 HD K SD、 HI) SDI等等。（2)多个通道信号输出， 图像控制器可以根据所需要支持的投影机的数量设定 输出通道数量。 （3)对各种信号的效果控制包括： 视窗操控 、 图像缩放、 边缘融合等 。
目前立体显示技术从观看方式上可以分为裸视式观看和眼镜式观看两种，裸视式立 体显示因为不需要额外的设备即可让观众欣赏到立体效果， 而受到了消费者的普遍欢迎 和厂家的重视， 裸眼式立体技术是现在 3D显示技术的发展方向， 但是裸眼式显示技术 的发展还不成熟。 眼镜式立体显示技术发展较早， 解决方案也比较成熟， 具体的技术上 还可以分为： 光谱式、 被动偏振光式、 主动快门式等等。 眼镜式实现立体画面的显像需 要佩戴特定的眼镜， 例如光谱式采用不同镜片的眼镜， 被动偏振式采用圆偏振或者线 偏振镜片的眼镜， 主动快门式采用液晶开关快门眼镜等。
立体成像的原理就是用两个摄像机模拟人眼观察事物的原理， 拍摄两幅视角略有差 异的画面， 在播放的时候分别向人的两只眼睛进行输出， 通过技术方法保证在播放时， 左边摄像机拍摄的画面只进入观看者的左眼， 右边摄像机拍摄的画面只进入观看者的 右眼， 让观看者的两只眼睛分别只能观看到制定的画面， 这样在观看者的脑海里形成立 体的视觉。
主动快门式立体显示技术， 又称为分法遮光或液晶分时技术， 主要是靠液晶眼镜的 特性来实现的，液晶眼镜片是可以分别控制开与关的两片液晶屏，正常显示为透明状态， 通电之后就会变黑色。通过特殊的信号发射装置发送红外控制信号时， 液晶眼镜在接收 到这类控制信号时， 通过通电来控制镜片的透明与不透明， 达到遮挡某只眼睛的目的， 让播放的立体信号内容， 在播放左眼画面时将眼镜的右眼镜片变黑关闭， 反之在播放右 眼画面信号时将液晶眼镜的左眼镜片通电变黑关闭， 从而达到立体播放内容与观看者眼 睛之间实现精确同步， 达到立体显像的视觉效果。
播放复合立体信号时， 在显示屏幕上会交替出现左右眼画面的信号， 在播放左画面 时， 液晶眼镜的左 镜片打开， 右镜片关闭， 观众左眼看到需要让左眼看见的画面， 右 眼什么都看不到。 在播放右眼画面时， 液晶眼镜右镜片打开， 左镜片关闭， 左眼看不到 画面， 让左右眼分别看到左右各自的画面， 从而实现 3D立体效果。 这个控制交替过程 只有达到 120次 /每秒以上时，才能保证单眼的接受频率不低于 60Hz 从而才能欣赏到连 贯而不闪烁的立体画面， 所以主动式 3D 显示技术要求信号输出的的刷新率至少达到 120Hz
立体信号源是实现立体显示***的基础， 一般的立体信号分为两种， 复合立体信号 与分离式立体信号。 复合式立体信号是指一个立体视频信号里面即包括左眼信息， 又包 括右眼信息。 不同信息按帧分隔， 奇数帧为左眼， 偶数帧为右眼信号， 信号内容是左右 眼交替的方式播放。分离信号是指每个图像由两个独立的视频信号构成也就是两个立体 信号源， 一个是只包含左眼信息的视频信号， 一个是只包含右眼信息的视频信号。 在播 放分离信号时， 将两个不同的信号文件同时进行播放。
采用液晶快门开关方式实现立体显示的基本原理是： 信号源采用左右眼信息间隔 的复合式立体信号， 当立体信号进行播放时， 播放设备在播放奇数帧左眼信号时， 通 过红外发射器， 发送左眼内容的识别信号， 液晶快门开关眼镜接收到该红外信号时关闭 右眼的眼镜片， 只让信号通过眼镜进入左眼， 同理， 播放设备在播放偶数帧的右眼信 号时， 通过红外发射器， 发送右眼内容的识别信号， 液晶快门幵关眼镜接收到该右服红 外信号时关闭左眼的眼镜片， 只让信号通过眼镜进入右眼， 从而达到左右眼信号分别只 进入左眼和右眼的自的从而实现立体显像效果。 在高端仿真设计、 地形显示等应用场合中， 往往需要在由多台投影机组成的大屏幕 上显示多个外部图像信号的同时兼容显示立体信号， 也就是在整个大屏上同时出现平面 图像信号和立体图像信号。这种功能需求往往要求图像控制器既能处理操控平面图像信 号又能处理显示和操控立体图像信号， 并将两者信号有机地融合成一个完整的大屏。
整个平面立体信号混合显示的***中， 图像控制器既要处理平面信号， 又要处理立 体信号。 如果外部的立体输入信号是复合的立体信号， 为保证观众能有立体感的体验效 果， 整个***还必须有控制液晶快门开关同步信号的装置来保证立体信号的同步控制。
在平面立体信号混合显示的大屏***中， 复合立体信号的播放设备与液晶快门开关 眼镜之间通过红外发射器发送识别信号来实现的主动快门式立体显像。 目前红外发射器 发送立体识别信号控制液晶开关眼镜的途径有： A ) 通过播放复合立体信号的电脑来控 制红外发射器； 此方式为在播放复合立体信号内容的同时， 播放设备 （往往是电脑）通 过专门配置的红外发射器控制发送快门开关的红外立体同步控制信号。此种途径方式控 ： 制同步信号的发送， 局限性在于： 在支持多台投影机构成的无缝大屏幕时， 用于播放复 合立体信号的电脑在处理平面和立体信号的同时，没有足够的资源和能力完成边缘融合 相关的技术实现大屏幕无缝拼接， 也就是用于播放立体信号的电脑往往只能支持一台投 影机的显示和同步控制，不能实现在边缘融合超大屏幕上实现平面和立体信号的混合显 示。 B )通过接收复合立体信号的投影机来控制发送快门开关的红外信号。也就是通过 ' 投影机专门设计的特殊端口来配置红外发射器， 在投影机播放立体信号的同时， 将立体 同步控制信号发出， 在实现超大屏幕显示时， 通过多台投影机串联同步信号的方式实现 立体信号的同步控制， 可以满足由多台投影机组成的边缘融合大屏幕的要求， 同时还可 以实现主动式立体信号的显示。但此方法存在的局限性在于： 往往不能同时处理立体信 号和平面信号， 也就是平面信号和立体信号不能混合在大屏幕上显示， 只能以两种不同 的状态通过不同的场景切换来显示， 当显示立体信号时， 无法同吋显示平面信号， 反之 亦然。 在高端仿真应用中， 往往需要在多个投影机组成的超大屏幕上， 不仅仅能显示单个 立体画面或者多个平面信号画面，往往还要求在整个大屏幕上同时显示平面信号和立体 信号。在这种应用需求下， 通过 A方式显像的立体信号， 受限于播放立体信号的电脑的 处理能力， 显示画面的尺寸比较小， 往往只能采用一台投影来显示有限的篇幅。 采用 B 方式虽然可以实现大平面的立体显示，但是又不能同时处理多个信号平面或者立体信号 的同时显示。
通过在边缘融合图像控制器上控制主动立体同步红外信号发送的方法既可以满足 构建由多台投影机组成的大屏幕的要求， 同时又能满足多个平面和立体信号同时显示的 技术需求。 发送信号显示的同步方式决定了整套***能实现的功能， 既要满足需耍显示 的画面内容能支持多台投影机构成的大画面， 同时还需要对多个不同屏幕信号和立体信 号进行兼容显示， 还需要保持立体信号与液晶快门幵关眼镜的同步控制。 发明内容
本发明的目的是提供一种将立体与平面图像混合信号在超大屏幕上显像的全新同 步控制方法。 在由多台投影机组成的大屏幕墙， 不同投影机显示整体画面的不同部分， 需要对所有输入的图像信号进行复杂处理包括不同分辨率平面信号的采集、缩放、叠加， 再分割为屏幕上的不同位置以边缘融合的技术输出。有关图像处理的相关工作由边缘融 合图像控制器完成， 因此通过边缘融合图像控制器来发送主动立体复合信号的同步信号 控制， 是在高端仿真应用下的有效途径。 此方法可以将多个平面和复合立体信号兼容处 理， 既满足多个平面立体信号混合显示的问题， 同时完成边缘融合技术的输出实现大屏 幕显示， 通过该设备驱动的红外发射器的立体同步信号， 又可以确保立体信号在整个大 屏幕的任意位置完整展现。
实现本发明的方法是： 图像采集单元采集不同格式的立体信号和平面信号， 把不同 格式的立体信号转变为一帧左眼、 .一帧右眼交替出现的平面信号， 传送给立体同歩处理 单元的立体输入口， 平面信号输入到平面输入口， 立体同步处理单元根据预先设置改变 信号的大小和位置， 并把不同立体信号之间的左眼信号与左眼信号、右眼信号与右眼信 号的分别叠加， 立体信号的左眼信号与平面信号、 右眼信号与平面信号的分别叠加。 叠 加后的信号结合帧同步信号传输给图像融合单元， 图像融合单元中不同输出单元截取相 5 应部分图像并产生重合区域和融合带参照帧同步信号同步输出给显示设备。立体同步控 制单元按帧同步信号生成控制液晶快门开关的同步信号， 经过红外发射器输出立体同步 信号。
实现本发明的装置是： 包括依次连接的图像采集单元、立体同步处理单元、 图像融 合单元和立体同步控制单元，其中图像采集单元将采集到的外部不同格式的立体信号转
10 换为平面信号， 并结合帧同步信号传送给立体同步处理单元， 立体同步处理单元接收到 ； 不同图像立体信号和平面信号根据预先设置改变信号的大小和位置，经叠加后结合帧同 . 步信号传送给图像融合单元， 图像融合单元将不同输出单元截取相应部分图像并产生重 合区域和融合带参照帧同步信号同步输出给显示设备，立体同步控制单元把帧同步信号 转换为液晶快门开关的红外控制信号。
15 本发明具有的有益效果：通过图像控制器输出对液晶快门开关的控制信号的方法， 可以达到以下的效果： 1 )可以显示对主动立体信号的超大平面显像。 与通过电脑控制 同步的方式不同，由于电脑的输出分辨率有限，如果要显示大平面的主动立体信号画面， 需要对原始画面进行切割再放大， 这样局部画面之间的同步很难控制。 产生的画面往往 ' 产生不了立体效果。 此方法通过图像控制器产生同步方式， 由于图像控制器的功能之 20 一是对外部输入的信号进行处理， 构筑出一幅大平面的显示画面， 在输出的同时， 发送 同步控制信号， 能满足大画面显示的同时， 实现立体信号的同步控制。 2 )可以同时处 理多个平面或者立体信号。 与通过投影机发送同步信号的方式不同， 当显示多个信号 内容时， 需要电脑对外部信号进行处理输出， 投影机的同步输出， 无法控制采用图像控 制器采集的外部数字模拟的信号， 包括立体信号。 此方法在图像控制器内部完成両面叠 力P、 缩放、 和分割处理后， 分段输出大画面的局部图像信号来构成完整画面， 在输出的 同时， 将涉及主动立体的信号内容的同步控制通过红外直接发送来控制液晶快门眼镜， 这样即保证了能同时处理多个平面信号， 同时 复合的立体信号的同步显示的同时， 可 以组成一幅超大分辨率或者超大面积的画面。 附图说明 图 1是本发明的整体原理框图。 . 图 2是图 1中的图像采集单元信号处理框图。 图 3是图 1中的立体同步处理单元信号处理图，表示多路立体信号中的两路立体信 号。 - 图 4是图 1中的立体同步处理单元信号处理图，表示多路立体信号中的一路立体信 号和一路平面信号。 图 5是图 1中的立体同步信号生成单元信号处理图， 其中 5a是帧同步信号， 5b是 某一种液晶开关眼镜的红外线波形。 图中： 1图像采集单元、 2立体同步处理单元、 3图像融合单元、 4立体同步信号生 成单元、 5左眼、 6右眼、 7各种不同格式的立体信号。 具体实施方式 下面结合附图对本发明作进一步说明： 本发明的同步方法是： 接收不同的立体信号格式输入， 并解码为左右眼交替出现的平面信号格式， 同时产 生帧同步信号用来标明左眼帧和右眼帧；
把不同立体信号之间的左眼帧、右眼帧信号分别叠加， 立体信号的左眼帧信号与平 面信号、 右眼帧信号与平面信号的分别叠加， 叠加后的信号结合帧同步信号； 通过图像控制器截取相应部分图像并产生重合区域和融合带参照帧同步信号同步 输出给显示设备， 同时由按每一帧的同步信号生成控制液晶快门开关的信号， 经过 红外发射器输出立体同步信号。
如图所示， 本发明的整体原理框图如图 1所示， 包括图像采集单元 1、 立体同步处 理单元 2、 图像融合单元 3和立体同步控制单元 4。 图像采集单元 1采集外部输入信号， 采集的信号是立体信号时， 把不同格式的立体信号转换为一帧左眼、 一帧右眼交替的平 面信号结合帧同步信号， 传送给立体同步处理单元 2。 立体同步处理单元 2接收到不同 图像立体信号和平面信号根据预先设置改变信号的大小和位置， 并把不同立体信号之间 的左眼信号与左眼信号、 右眼信号与右眼信号的分别叠加， 立体信号的左眼信号与 f-面 信号、 右眼信号与平面信号的分别叠加。 叠加后的信号结合帧同步信号 传输给图像融 合单元， 图像融合单元中不同输出单元截取相应部分图像并产生重合区域和融合带参照 帧同步信号同步输出给显示设备， 同时按帧同步信号生成控制液晶快门开关的同步信 号， 经过红外发射器输出立体同步信号。
图像采集单元 1 , 可以接收不同的立体信号格式（Frame sequential (帧连续）、 Frame packing (帧封装）、 Side-by-side (并排)、 Checkerboard (棋盘）等） 输入解码为左右眼交 替出现的平面信号格式， 并产生帧同步信号用来标明左眼帧和右眼帧。 立体同步处理单元 2 改变图像釆集单元 1传输过来的平面信号的大小和位置， 对 不同通道信号相互叠加， 并输出帧同步信号给图像融合单元 3。
图 3是立体同步处理单元 2 两路立体信号处理图， 多路信号处理方式相同。图像采 集单元 1输出的立体转换后的左右眼交替的平面信号 、 B和帧同步八、 B信号， 输入 到立体同步处理单元 2, 立体同步处理单元 2根据帧同步 A信号提取立体转换后的左右 眼交替的平面信号 A的左眼信号与根据帧同步 B信号提取立体转换后的左右眼交替的 平面信号 B的左眼信号相叠加生成一幅大画面 " C左眼"， 根据帧同步 A信号提取立体 转换后的左右眼交替的平面信号 A的右眼信号与根据帧同步 B信号提取立体转换后的 左右眼交替的平面信号 B的右眼信号相叠加生成一幅大画面 " C右眼"， "C左眼"和" C 右眼"交替输出。 帧同步 C信号选取帧同步 A和帧同步 B两者中数值较大的一个。
图 4是立体同步处理单元 2 —路立体信号一路平面信号处理图， 多路信号处理方 式相同。 图像采集单元 1 输出的平面信号 B与立体转换后的左右眼交替的平面信号 A 和帧同步 A信号，输入到立体同步处理单元 2。立体同步处理单元 2根据帧同步 A信号 提取立体转换后的左右眼交替的平面信号 A的左眼信号与平面信号 B帧 1相叠加生成 一幅大画面 "C左眼"， 根据帧同步 A信号提取立体转换后的左右眼交替的平面信号 Λ 的右眼信号与平面信号 B帧 1相叠加生成一幅大画面 "C右眼"， 下一时刻立体同歩处 理单元 2根据帧同步 A信号提取立体转换后的左右眼交替的平面信号 A的左眼信号与 平面信号 B帧 2相叠加生成一幅大画面 "C左眼"， 根据帧同步 A信号提取立体转换后 的左右眼交替的平面信号 A的右眼信号与平面信号 B帧 2相叠加生成一幅大画面 "C 右眼"， "C左眼"和 ."C右眼"交替输出。 帧同步 C信号与帧同步 A信号相同。 图 5 是立体同步信号生成单元 4把帧同步信号转换为液晶快门开关的红外控制 号， 可以改变红外控制信号的波形， 控制不同的液晶快门开关方式的眼镜。

Claims

权 利 要 求
1.一种立体与平面图像混合信号在超大屏幕上显像的同步方法， 其特征是包括： a.接收不同的立体信号格式输入，并解码为左右眼交替出现的平面信号格式，同 时 产生帧同步信号用来标明左眼帧和右眼帧；
b.把不同立体信号之间的左眼帧、右眼帧信号分别叠加， 立体信号的左眼帧信号与 平面信号、右眼帧信号与平面信号的分别叠加， 叠加后的信号结合帧同步信号； c 通过图像控制器截取相应部分图像并产生重合区域和融合带参照帧同步信号同 步输出给显示设备， 同时由按每一帧的同步信号生成控制液晶快门开关的信号， 经过红外发射器输出立体同步信号。
PCT/CN2011/070097 2010-11-25 2011-01-07 立体与平面图像混合信号在超大屏幕上显像的同步方法 WO2012068784A1 (zh)

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