Using 3D in Mirage
Contents
1. CDS VRCO bin stereo3d_test and double click on the run bat file for the desired resolution Note To run the test pattern at a resolution that has not been provided copy and edit a set of script files config file and bat file Refer to the CAVELib EOE documentation The pattern should appear on the monitor and the screen Match the Projector to the CRT Monitor Make sure Frame Lock Enable is checked With Stereo 3D glasses on adjust Frame Delay until the L R display on the projector matches the display on the monitor Close one eye to test Optimize the Frame Delay 1 In the projector s Simulation 3D menu select the Frame Delay option note the Frame Lock Enable checkbox must be checked Close one eye and adjust the value until the test pattern has the following characteristics The background is clear The vertical strips in the foreground are clear The shadow of the opposite side vertical strips is minimized or removed 2 Switch eyes to ensure that both sides of the pattern appear correct Using 3D in Mirage Christie Digital Systems Inc Note Ifyou are setting up Stereo 3D on a blended display once the first projector is set up you will need to adjust the frame delay on all projectors to match the projector to which the 3D Stereo Sync Cable is connected Then fine tune the frame delay for each projector Optimize the Stereo Sync Delay A proper Stereo Sync Delay setting can minimize cross talk or ghosting2. DARK INTERVAL note not always required For slower gating technologies you may also need to artificially increase the amount of dark time between displayed frames so that shutters have even more time to open close and each eye sees the full display intended for it Symptoms are more subtle than cross talk if the dark interval is too brief for proper gating you may notice an apparent color temperature problem with some whites or grays appearing with a slight red green or blue tint This color artifact is particularly easy to diagnose in a grayscale test pattern displayed in 3D mode In the Advanced Image Settings menu increase the Dark Interval as necessary until the grayscale is correct you may also have to increase the internal frame delay when using a longer Dark Interval The Dark Interval range of adjustment depends on the vertical frequency of your source the higher the frequency the smaller the range NOTES 1 Increasing the Dark Interval decreases the peak brightness of the image Use only if necessary you may prefer some color artifacts rather than reduced brightness or vice versa 2 Higher input frame rates limit the range of Dark Interval adjustment 3 Faster glasses allow a briefer dark interval 3D STEREO SYNC This option defines 1 whether or not the incoming 3D signal locks to the vertical sync output so that signals are synchronized and 2 whether or not the 3D frames must be inverted i e swapped l
3. It is available only if you are using the Mirage 3D Stereo Sync cable When the Stereo Sync Delay is incorrect your projector display and monitor may show very different images e Using the projector screen as a reference adjust the Stereo Sync Delay so that the ghosting in the test pattern is equal with both eyes see below Close one eye at a time to check and adjust ghosting of right eye data ghosting of left eye data Pa an N AS omm m en e e a until ghosting is m Stereo Sync Delay Adjust equal E LEFTEYE OPEN RIGHT EYE OPEN Figure 10 Projector test pattern viewed through stereo 3D glasses shows cross talk of data for the opposing eye e Using the monitor as a reference adjust Stereo Sync Delay until the image is no longer split You may have to try adjustments in both directions increasing or decreasing frame delay to determine which results in a clearer image Band shows Stereo Sync Delay needs adjustment gt horizontal band indicating frame misalignment Christie Digital Systems Inc Using 3D in Mirage 17 18 Note 1 Advancing Stereo Sync Delay with an unlocked Stereo Sync Lock option produces the same result as using a locked Stereo Sync Lock Option 2 For more information about stereo sync delay adjustments see Appendix B Optimize the Stereo Dark Interval Once your Frame Delay and Stereo Sync Delay settings are optimized adjusting the Dark Interval can elimina
4. Main Imaging Settings 3 3D Stereo Sync Locking Output y Advanced Image 4 3D Stereo Sync Select Input A v Settings Simulation 5 3D Stereo Sync Delay 1000 GENE 6 Frame Lock Enable 7 aD 7 Warp Latency 50 0 Note 1 For full information about the projector s menu system please refer to section 3 3 Navigating the Menus in the Roadster Mirage S User s Manual 2 Warp Latency is part of the ChristieTWIST functionality and will only appear if a warp board is installed Although generally Warp Latency will be set when you create your ChristieTWIST warps the option is also available here for additional fine tuning 3D Stereo Sync Locking Options The 3D Stereo Sync Locking options ensure that the projector s 3D display of left right frames is synchronized with the rest of the 3D system components so that the full left or full right image data is seen by the intended eye Note these options are available only if you are using the Mirage 3D Stereo Sync Cable if the cable is not connected properly these options are disabled in the Simulation 3D menu 1 In the Simulation 3D menu select 3D Stereo Sync Locking 2 Specify how the Stereo 3D signal is synchronized by selecting from the dropdown list Figure 9 summarizes the available options Refer to table 4 1 Stereo 3D Setup Options for recommended settings for the sample setups Choose unlocked if you will sync to a CRT Choose locked if you will not sync to a
5. Basic plus CRT and Step 2 Step 4 Optimize Step 3 Adjustto Step 1 Select High performance GPIO See Figure 8 Match with test pattern reduce ghosting option 5 sync increased latency due to below projector to to input signal optimization with CRT CRT unlocked and inverted Multiple projectors 1 When working with multiple projectors and a blended display set up the master projector using one of the High Performance options noted above 2 Slave projectors can be set up using the Basic method Essentially once the master projector is set up set the frame delay to match and then fine tune these settings as necessary 4 2 Setup Diagrams Basic Setup Projector only no 3D Stereo Syne Cable or monitor Active glasses a Q Y RGB Format 3 4 or 5 wire Or DVI Workstation PC with Stereo 3D capable Graphics Card Figure 5 Basic setup 12 Using 3D in Mirage Christie Digital Systems Inc Basic Setup with CRT Monitor Projector and monitor no 3D Stereo Sync Cable Active glasses RGB Format 3 4 or 5 wire Workstation PC with Stereo 3D capable Graphics Card Figure 6 Basic setup with CRT monitor High Performance Setup This setup requires the use of the Mirage 3D Stereo Sync cable Projector with 3D Stereo Sync Cable no monitor IR Emitter RGB Format 3 4 or 5 wire Or DVI Workstation PC with Stereo 3D capable Graphics Card 3D Stereo Ou
6. Frame delay can be anywhere from slightly more than 1 frame to slightly more than 2 frames depending on the source format and whether or not you are also using ChristieT WIST for image warping Your 3D stereo capable computer source must use a graphics card that can supply a stereographic 3D video signal Use a progressive RGB source with native resolution up to 1400 x 1050 can be cropped if desired Formats with a resolution higher than that of the projector can be scaled down in addition some lower resolution formats can be scaled up Keep in mind the following recommendations 92 114 Hz input frame rate if SXGA resolution Pixel rate for analog signals should be between 200 and 210 MHz Pixel rate for digital signals cannot exceed 165 MHz Note Digital signal processing DVI D does not support full resolution of 1400 x 1050 115 Hz Requires at least 14 lines of vertical blanking Use minimized line rates horizontal frequency Typically video input is sent to the projector via cables such as 3 wire RGB sync on green 4 wire RGB with composite sync 5 wire RGB with separate H sync and V sync DVI I Analog and digital DVI D Digital Christie Digital Systems Inc Using 3D in Mirage 19 Appendix A Troubleshooting Refer to the following guide if 3D images image displayed by your projector do not appear as you expect FLICKERING IMAGE Increase the incoming frame rate to at least 96 Hz IMAGE IS COMPRESSED HORIZ
7. if the Mirage 3D Stereo Sync Cable is connected between the projector s GPIO port and a server Slide bar values indicate the number of lines that are delayed Figure 15 shows the various relationships between signals and Mirage software adjustments for 3D images Christie Digital Systems Inc Using 3D in Mirage 25 26 L R frames IN SEE lt K lt A O vertsyne our aea I IL Frame Delay gt Image OUT Dark Interval i werd of frame R L frames OUT t H Locked 3D Stereo Sync Delay lt gt Unlocked Figure 15 Adjustments and Signals Using 3D in Mirage Christie Digital Systems Inc Appendix C VRCO Test Pattern Software Setup Optimization instructions in this manual involve running a test pattern that developed using VRCO s CAVELib API distributed by VRCO e Downloading the CAVELib EOE software e Unix Installation e Windows Installation 5 1 Download the CAVELib_EOE software 5 2 Unix Installation This procedure requires that the Stereo 3D source PC workstation have internet access 1 Open an internet browser and go to the VRCO website http www vrtigo com DISTRIBUTION EOE 2 Review the license agreement 3 To access the VRCO CAVELib_EOE software you must agree to the license agreement Click the I AGREE button and you will be taken to the CAVELib EOE download page 4 Download the CAVELib_EOE software For UNIX HPUX IRIX Linux and Solaris type systems
8. 7 CHRISTIE Sales Canada Tel 1 800 265 2171 Fax 519 749 3136 CHRISTIE Digital Systems Inc 10550 Camden Drive Cypress CA 90630 USA Tel 714 236 8610 General Toll Free 1 800 221 8025 Technical Support Fax 519 749 3302 Service CHRISTIE Digital Systems Inc Willicher Damm 129 D 41061 M nchengladbach Germany Tel 49 2161 664540 Fax 49 2161 664546 CHRISTIE Digital Systems Inc Rm C1109 Orient International Bldg Part C 85 Lou Han Guan Rd Shanghai 200336 People s Republic of China Tel 86 21 6278 7708 Fax 86 21 6278 7707 CHRISTIE Sales U S Tel 1 800 407 7727 or 1 866 880 4462 Fax 714 503 3375 Christie Digital Systems Inc Using 3D in Mirage 33 Index 3D glasses See Stereo 3D glasses 3D Source 3 19 Video Input 19 Basic setup 5 11 With CRT 11 13 Clamp tip control 21 Color artifacts 21 Computer See 3D source Cross talk 21 CRT matching 16 22 Dark interval 18 22 25 Description 3 Frame delay 16 22 Minimum 22 Frame inversion 9 Frame lock 16 Ghosting See Cross talk Glasses See Stereo 3D glassees GPIO See Mirage 3D Stereo Sync Cable Hardware requirements 8 19 High performance setup 12 13 With CRT 12 14 How to Activate 3 Interpolated color 25 IR Emitter 9 Matching projector to CRT 16 Mirage 3D Stereo Sync Cable 7 9 13 14 Optimization 11 14 Setup 11 Basic 5 11 Basic with CRT 11 13 High performance 12 13 High performance with
9. A CHKISTIE Using 3D in Mirage 013 100195 COPYRIGHT NOTICE 2005 Christie Digital Systems Inc All Rights Reserved This doeument contains proprietary information of Christie Digital Systems Canada Inc and Christie Digital Systems USA Inc collectively known as Christie Digital Systems Inc and may not be reproduced stored in a retrieval system transferred to other documents disclosed to other manufacturers or used for manufacturing or for any other purpose in whole or in part without prior written permission of Christie Digital Systems Inc Christie Digital Systems Inc reserves the right to make changes in specifications at any time without notice The information furnished in this publication was believed to be accurate and reliable Christie Digital Systems Inc makes no warranty of any kind with regard to this material including but not limited to implied warranties of fitness for a particular purpose Christie Digital Systems Inc shall not be liable for errors contained herein or for incidental or consequential damages in connection with the performance or use of this material GRAPHICS All drawings including system layout hardware devices controls and indicators screens and maintenance drawings are provided to enhance understanding of the accompanying text These graphics are representations only they are not necessarily drawn to scale and may not represent parts of your specific system TRA
10. CRT No 3D Stereo Sync Cable present default 1 Off 3D Delay is synchronized with gt 2 Output 3D Delay is synchronized with 4 Input locked to incoming input signal 5 Input Inverted Reverse L R frames Use if frame delay 1 or 3 locked to projector s vertical sync output 3 Output Inverted Inverted Figure 9 Stereo Sync Locking options 3 Inthe Simulation 3D menu select 3D Stereo Sync Select and specify which input connector on the 3D Stereo Sync Cable is connected to your 3D source either Input A or Input B Christie Digital Systems Inc Using 3D in Mirage 15 16 Enable Frame Lock 1 Lock the output image frame rate to the input image frame rate by entering a checkmark in the Frame Lock Enable checkbox Note This also enables Frame Delay and other Simulation 3D submenu options Display the Test Pattern Display the Stereo Test pattern on all projectors and monitors in use The test pattern is a CAVELib_EOE application sourced from VRCO See Appendix C for information about installation Note The CAVELib EOE software must be installed in the Christie specified location for the custom scripts to run e To run the test pattern on a Unix workstation run the batch for the desired resolution usr local VRCO bin stereo3d_test run_1280x960 bat usr local VRCO bin stereo3d_test run_1400x1050 bat e Torun the test pattern on a Windows PC open the Windows folder c
11. CRT 12 14 Multiple projectors 12 Simulation 3D settings 15 Stereo 3D glasses 9 Stereo 3D Interface Module Using the Emitter Port 9 Stereo sync 25 Delay 17 Input 7 Output 7 Stereo Sync Locking 15 Settings 15 Support contact information 33 Test pattern Displaying 16 Download 27 Troubleshooting 21 Video input 19 Christie Digital Systems Inc Using 3D in Mirage 35
12. DEMARKS All trademarks used in this manual are the property of their respective owners Christie Digital Systems Inc Using 3D in Mirage i Table of Contents ABOUT THIS GUIDE 1 OVERVIEW 1 1 What Do Need for Stereo 3D 2 QUICK START BASIC SETUP 3 MIRAGE 3D STEREO SYNC CABLE 3 1 Active and Passive Stereo 3D Configurations 4 STEREO 3D SETUP AND OPTIMIZATION 4 1 Stereo 3D Setup Options 4 2 Setup Diagrams Basic Setup Basic Setup with CRT Monitor High Performance Setup High performance Setup with CRT Monitor 4 3 Optimization Procedures Navigating to the Simulation 3D Submenu 3D Stereo Sync Locking Options Enable Frame Lock Display the Test Pattern Match the Projector to the CRT Monitor Optimize the Frame Delay Optimize the Stereo Sync Delay Optimize the Stereo Dark Interval 5 3D SOURCE REQUIREMENTS APPENDIX A TROUBLESHOOTING APPENDIX B UNDERSTANDING THE PROJECTOR ADJUSTMENTS APPENDIX C VRCO TEST PATTERN SOFTWARE SETUP 5 1 Download the CAVELib_EOE software 5 2 Unix Installation Install CAVELib_EOE Install Christie Supplied Program Scripts Test the Test Pattern 5 3 Windows Installation Install CAVELib_EOE Install Christie Supplied Program Scripts Test the Test Pattern INDEX Christie Digital Systems Inc Using 3D in Mirage N OF wo WO 11 12 12 13 13 14 14 15 15 16 16 16 16 17 18 19 21 22 27 27 27 27 28 28 29 29 29 30 35 iv Using 3D in Mirage Christie Digi
13. ONTALLY Increase pixel tracking If already maximized the pixel clock rate of the source is too high for the projector 3D CROSS TALK GHOSTING 1 Make sure the IR emitter is not blocked and that its signals can reach glasses 2 If using a Pi Cell polarizer and passive glasses make sure you are using a screen that maintains polarity 3 Are depleted batteries slowing down the active glasses 4 Fix timing parameters in your source 5 Adjust Dark Interval setting NO IMAGE JUMPY IMAGE OR NOISE AT IMAGE TOP Your video card s minimum timings for blanking and pulse width may be too slow for use with the projector Try adjusting the timing parameters in your source WITHOUT GLASSES SEE ONLY A SINGLE IMAGE You are not in 3D mode WITH GLASSES PERSPECTIVE APPEARS REVERSED The 3D Stereo Sync Cable may not be connected properly If the cable is connected the 3D Stereo Sync setting in the Advanced Image Settings menu needs to be toggled inverted from its current setting If you are not using the 3D Stereo Sync Cable refer to the documentation for your 3D card or application IMAGE IS BREAKING UP The horizontal back porch may be too small or too large If you can lock to the signal by changing H Position but have a black left edge in the image reduce the source s horizontal back porch blanking If the black edge is on the right increase the source s horizontal back porch blanking HORIZONTAL STREAKS IN THE IMAGE You ma
14. are to C CDS VRCO 1 Access and run the downloaded windows installation file CAVELib3 1 1 EOE Install exe and follow the installation instructions in the wizard 2 On the Choose Destination Location window change Destination Folder by clicking the Browse button and change it to C CDS VRCO Choose Destination Location x Setup will install CAVELib 3 1 1 Execution Only Environment in the following folder To install to this folder click Next To install to a different folder click Browse and select another folder You can choose not to install CAVELib 3 1 1 Execution Only Environment by clicking Cancel to exit Setup Destination Folder C ACDSWRCO lt Back Next gt Cancel Figure 17 Installation wizard Install Christie Supplied Program Scripts Install the CDROM disc installer file to the C CDS VRCO bin directory 1 To start the script installation browse to the E stereo3d test software where E is the drive letter for your CDROM drive 2 Double click the Windows Installer exe file to run the installation wizard Christie Digital Systems Inc Using 3D in Mirage 29 3 On the Installation Folder window appears specify C CDS VRCO bin for the Destination Folder s Stereo3D Testpattern Windows Installer Setup Installation Folder ar Nullsoft Install System v2 04 lt Bac Figure 18 Installation of Christie supplied scripts 4 Complete and close the install
15. ation wizard Test the Test Pattern 1 To run the test pattern open the Windows folder c CDS VRCO bin stereo3d_test and double click on the run bat file to start the stereo3D test pattern 85 C CDS VRCO bin stereo3d_test 1KB MS DOS Batch File 11 MS DOS Batch File Date Modified Today August 24 2005 6 25 PM Size 45 bytes Figure 19 Test pattern location under Windows 30 Using 3D in Mirage Christie Digital Systems Inc If the graphics card is configured correctly for stereo3D it should look like the image below without wearing active stereo3D glasses Press the ESC key to close this program window EA EAS Figure 20 Test pattern Christie Digital Systems Inc Using 3D in Mirage 31 N CHRISTIE TECHNICAL SUPPORT NORTH AMERICA CHRISTIE Digital Systems Inc 809 Wellington St North Kitchener Ontario Canada N2G 4Y7 Tel 519 744 8005 General Toll Free 1 800 221 8025 Technical Support Fax 519 749 3302 Service EUROPE CHRISTIE Digital Systems Inc View Point 200 Ashville Way Wokingham Berkshire RG41 2PL United Kingdom Tel 44 118 977 8111 Fax 44 118 977 8112 CHRISTIE Digital Systems Inc 7 av Georges Pompidou 92593 Levallois Perret Cedex France Tel 33 0 1 47 48 28 07 Fax 33 0 1 47 48 26 06 ASIA PACIFIC OTHER CHRISTIE Digital Systems Inc 627A Aljunied Road 05 02 Biz Tech Centre Singapore 389842 Tel 65 6877 8737 Fax 65 6877 874
16. below inverted difference optimization may not Step 1b Optimize between remove all ghosting with test pattern projector and Higher latency LCD glasses Not recommended for immersive or simulation environments Basic Setup with CRT optimizing with CRT always increases the frame delay use these option only when necessary Basic plus CRT No GPIO See Figure 6 below Step 1 Match Projector to CRT Step 2 Adjust to reduce ghosting Default Off High latency due to matching to CRT Non optimized stereo optimization may not remove all ghosting Optimization in an immersive environment will generally not use an auxiliary CRT CRT automatically increases the display latency by as much as 1 frame 2 A monitor used for optimizing must be a CRT LCD monitors generally are not fast enough to display stereo 3D Christie Digital Systems Inc Using 3D in Mirage 11 Component Frame Frame Delay on Dark Interval GPIO 3D Additional Information Connections Delay on Projector Stereo Sync CRT Locking High Performance Basic plus GPIO cable no CRT See Figure 7 below Step 2 Optimize with test pattern Step 3 Adjust for interaction with stereo shutter glasses or z screen Step 1 Select option 3 sync to vertical output locked and inverted High performance less latency or delay High Performance in creased latency due to CRT
17. download to tar file and the install script cavelibeoe tgz install cavelibeoe Note To download the perl script right click and use save target as For Windows systems download the self extracting zip file CAVELib3 1 1_ EOE Install exe Install CAVELib_EOE Complete installation instructions are provided on the download page Ensure that the CAVELib_EOE software is installed at the following location Install the CAVELib EOE software to the default directory for UNIX at ust local VRCO Christie Digital Systems Inc Using 3D in Mirage 27 Install Christie Supplied Program Scripts The program scripts are included on the Christie Digital System Using 3D in Mirage CD that accompanies this manual 1 To copy the CDROM disc file unix to the usr local VRCO directory type cp r CDROM unix stereo3d test usr local VRCO bin 2 To change to the program scripts directory type ed usr local VRCO bin stereo3d_ test 3 Type chmod x bat Test the Test Pattern 1 Torun the test pattern run the batch for the desired resolution run 1280x960 bat or run 1400x1050 bat If the graphics card is configured correctly for stereo3D it should look like the image below without wearing active stereo3D glasses Press the ESC un to close this program window 1 Figure 16 Test pattern 28 Using 3D in Mirage Christie Digital Systems Inc 5 3 Windows Installation Install CAVELib_EOE Install the CAVELib EOE softw
18. e Shutters open close during the Dark Interval only Figure 13 Customizing the input signal Christie Digital Systems Inc Using 3D in Mirage 23 A Closing Too Late and or Opening Too Early Causes Cross Talk Mirrors active Frame A Left m Dark Interval lt Dark Interval Right Eye LCD Gating Example Left EE O ng O Eye NOTE Typical with 108 Hz vertical frame rate signals since their dark intervals have limited range and the internal delay is minimized Bor Too Quickly and or Opening Too Slowly Causes Color Artifacts Mirrors active Frame A Left _ lt Dark Interval Dark Interval Right A y COLOR ARTIFACTS meso Eye SA Ut vegan LCD Gating So 1 on orrn ere Ws O Example COLOR ARTIFACTS Left PS Eye paa ed Mirrors active ______ Frame A Left gt gt Dark Interval Dark Interval Right A en Eye E g LCD Gating nn Example Ee nme N Left o 0 EN Eye a Ing All shutter switching occurs during dark interval between frames Figure 14 Examples of poor and ideal synchronization When using the Mirage 3D Stereo Sync cable select Dark Interval choose which 3D Stereo Sync input is connected A or B adjust the 3D delay and choose the 3D Stereo Sync locking inversion options applicable for your installation 24 Using 3D in Mirage Christie Digital Systems Inc
19. eft with right The correct setting ensures that the projector s 3D display of left right frames is synchronized with other 3D system components so that left right image data is seen by the intended eye Select the option corresponding to your 3D source connections and timing and use only ifthe Mirage 3D Stereo Sync Cable is connected between the projector s GPIO port and a server this cable replaces the need for a separate TTL inverter Keep this adjustment OFF default when you are not using the 3D Stereo Sync Cable With your sync cable Z screen and if desired emitter connected select the option suited to your 3D configuration see above If frame delay is 2 or 0 do not invert if frame delay is 1 or 3 invert Generally an Unlocked setting is synchronized with the incoming L R signal rather than the vertical sync output and may be needed only with multi projector installations in which the vertical sync outputs vary slightly 3D STEREO SYNC SELECT Define which of the Mirage 3D Stereo Sync Cable s input connecters is routed to your server Input A BNC connector Input B BNC connector Use only if the cable is present 3D STEREO SYNC DELAY Set when the L R frames begin defining the best reference point for synchronizing the display with your glasses Proper adjustment should eliminate cross talk and odd colors caused by timing differences between the glasses and the projected display Use this slide bar only
20. he source input signal or the projector s output signal as set in the projector s Simulation 3D menu The Stereo cable is required if your configuration includes one of the following factors e Synchronizing to a PC monitor e Synchronizing multiple projectors for a blended screen Christie Digital Systems Inc Using 3D in Mirage 7 Notes 1 Ifa 2 frame delay or more is acceptable for your application or if your graphics card or application support eye reversal the 3D Stereo Sync Cable is not needed Instead connect your video source s stereo 3D sync output directly to your emitter or Z screen PZE device 2 In earlier units cable may not be exactly as shown 3 1 Active and Passive Stereo 3D Configurations Typical hardware configurations for active and passive Stereo 3D systems are shown in Figure 3 and Figure 4 Full hardware descriptions follow the illustrations Active glasses IR Emitter RGB Format 3 4 or 5 wire Server PC with Stereo 3D capable Graphics Card 3D Stereo Output Sync Cable Passive Polarizing Glasses RGB Format 3 4 or 5 wire StereoGraphics Z Screen Server PC with Stereo 3D capable Graphics Card 3D Stereo Sync Cable L R Synchronization Signal Figure 4 Typical Stereo 3D Configuration With Passive Glasses 8 Using 3D in Mirage Christie Digital Systems Inc APPROPRIATE STEREO 3D SOURCE Use stereo 3D appl
21. ication software with your 3D video source usually a workstation or PC The source must also provide a separate stereo 3D synchronization signal that precisely controls when left right fields are visible through the viewer s glasses usually a VESA 3 pin connector port 3D STEREO SYNC CABLE Since the projector has a variable delay using a simple inverter is not required Instead use the projector s 3D Simulation submenu to adjust the stereo sync delay to match the latency through the projector Connect the 3D Stereo Sync Cable and choose the proper setting in the projector s 3D Simulation submenu Stereo 3D displays will usually require adjustment of Frame Delay which can be approximately 1 3 frames set in 1 line increments If the delay is 1 frame or 3 frames it needs correction 1 e reversal of frames otherwise image display intended for one eye would be fully delayed and seen by the other images would lose their perspective and stereo 3D quality If your stereo 3D source cannot invert the signal thereby synchronizing the left right L R shutters in your 3D glasses or z screen with the corresponding images displayed by the projector you can invert by using the 3D Stereo Sync Cable and the proper 3D Stereo Sync Lock setting in the 3D Simulation submenu Either configuration ensures that shutter changes in the glasses or z screen allow each eye to receive the image data intended for it regaining the stereo 3D effect in the dis
22. ll polarizer z screen the signal must be synchronized to the projector via the 3D Stereo Sync Cable Christie Digital Systems Inc Using 3D in Mirage 9 4 Stereo 3D Setup and Optimization This chapter includes the following information e Stereo 3D Setup Options Table e Setup Diagrams e Optimization Procedures 4 1 Stereo 3D Setup Options A basic setup without the Mirage 3D Stereo Sync cable will typically have two or more frame delays A high performance setup with the Mirage 3D Stereo Sync cable allows you to set the projector as close to one frame delay as possible Notes 1 Additional frame delay in basic setup can be avoided if either the graphics card or software supports stereo eye reversal 2 The projector s frame delay cannot be adjusted unless the Frame Lock Enable checkbox is checked Four sample options for setting up Stereo 3D on the Mirage projector are outlined in the Table below Diagrams for these setup options follow the Table in section 4 2 Setup Diagrams Instructions for each optimization step are detailed in 4 3 Optimization Procedures Component Frame Frame Delay on Dark Interval GPIO 3D Additional Information Connections Delay on Projector Stereo Sync CRT Locking Basic Setup quick setup high latency Basic no GPIO no Step 1a Adjust if Step 2 Adjust to Default Off No emitter control CRT See Figure 5 L R frames are overcome speed Non optimized stereo
23. n appear with the same depth and perspective we sense in the real world NOTE The type of special glasses can be active stereo or passive stereo glasses depending on the type of stereo controllers and screen used 1 1 What Do Need for Stereo 3D Stereo 3D applications require a stereo 3D capable source few special hardware software setups described here and the Mirage projector s 3D Simulation submenu options to control the projector s processing synchronizing and displaying of your stereographic 3D source material Note Christie s Stereo 3D Interface Module used with earlier SXGA Mirage 2000 4000 5000 6000 models is not compatible with Mirage S models Note Mirage projectors support plug n play graphics cards through EDI D functionality as described in the Roadster Mirage S User s Manual HARDWARE e Christie s Mirage S projector e Christie s 3D Stereo Sync Cable recommended ensures minimum frame delay This GPIO cable is standard with all Mirage projectors e A source usually a computer with a stereo 3D graphics card capable of displaying progressive scan alternating frames of OpenGL quadbufffered stereo 3D applications suggested cards include ATI s FireGL nVIDIA s QuadroFX SGI InfiniteReality and others and running under Windows 2000 XP Linux IRIX HPUX OSX or Solaris operating systems e Stereo sync emitter for controlling active shutter glasses such as those by StereoGraphics NuVision
24. onitor the monitor has no frame delay so setting the Mirage frame delay to 2 keeps the left and right data ordered properly on both displays A frame delay twice that of the incoming vertical resolution creates 2 frames of delay For example if your source is 1400 x 1050 a frame delay of 2100 1050 x 2 Frame Delay 2100 will produce a 2 frame delay between source input and display output see right Alternatively when using ChristieTWIST in multiple projector displays having different amounts of vertical scaling you may have to increase frame delay for some devices so that the video arrives at the same time on the display FRAME DELAY TO MATCH CRT MONITOR A CRT monitor has no frame delay The projector will need a frame delay of two to match with the monitor delay by an even number of frames so that both display the left eye info at the same time MINIMUM DELAY Mirage has a minimum delay of one frame Calculate the required frame delay for your application as follows Total Frame Delay 1 Light engine Twist Latency Frame Delay Twist Latency 0 100 e 0 no frame delay e 100 1 frame delay e Depends on the amount of vertical Twist should be as low as possible e After completing Twist setup Adjust Latency until you see no vertical tearing 3 ChristieTWIST is an optional component for Mirage projectors Use a value of 0 if your projector does not include ChristieT WIST 22 U
25. or equivalent or StereoGraphics Z screen equipment consisting of a polarizing preserving screen and Z screen eyewear SOFTWARE e VRCOCAVELIB EOE software or similar See Appendix C for more information Christie Digital Systems Inc Using 3D in Mirage 3 2 Quick Start Basic Setup If a 2 frame delay or more is acceptable for your application the 3D Stereo Sync Cable may not be needed Instead connect your video source s stereo 3D sync output directly to your emitter or Z screen PZE device Note This basic setup is recommended only for 2 or more frame delay immersive systems For alternative setups see 4 1 Projector only no 3D Stereo Sync Cable or monitor Active glasses RGB Format 3 4 or 5 wire Or DVI Workstation PC with Stereo 3D capable Graphics Card Figure 1 Quick start configuration no cable CRT This quick start configuration requires the following Simulation 3D submenu adjustments e Set 3D Stereo Sync Locking to Off e Adjust Dark Interval to overcome the shutter speed difference between the projector and the LCD glasses e Adjust Frame Delay if the L R frames are inverted Christie Digital Systems Inc Using 3D in Mirage 5 3 Mirage 3D Stereo Sync Cable Most applications produce the best stereo 3D results when using the 3D Stereo Sync Cable provided with your Mirage projector see below This GPIO cable provides the means for synchronizing the various components in your 3D sy
26. play You can lock the R L signal to either the input or the output inverted or not IR EMITTER In response to an incoming sync signal this device emits L R infrared signals to a receiver in active 3D shutter glasses causing their L R shutters to alternately open and close for active stereo 3D applications Connecting one of the 3D Stereo Sync Cable outputs to an emitter allows you to synchronize the emitter s IR signal with your stereo 3D display GLASSES ACTIVE PASSIVE Active glasses differ in speed performance consult the documentation for your glasses and keep their specifications in mind when reconfiguring your source signal The input signal must be optimized for the available shutter speed in order to prevent obvious ghosting of image content known as cross talk in stereo 3D applications as well as other more subtle color artifacts Such problems indicate that the eyes are detecting portions of the opposing frame due to an out of sync system and can occur in either active or passive stereo 3D configurations Adjust the Dark Interval setting to reduce ghosting In the Simulation 3D menu the correct 3D Stereo Sync Delay setting should help to synchronize glasses with the displayed images See also Appendix B Understanding the Projector Adjustments for examples of well synchronized systems NOTE In a passive system where glasses do not have shutters and instead depend on the speed and accuracy of the Pi Ce
27. sing 3D in Mirage Christie Digital Systems Inc Frame Delay e If number is equal to total incoming vertical resolution then the display is delayed by a period of one frame e When frame lock is enabled the frame delay monitor will be within 20 of the frame delay when locked Internal Delay vert sync width vert back porch 272us 12us Frame B Right F Frame C Left V sync J Internal Delay e A Nen nn L R P O gt Agjust Mirrors active Frame A Left Frame B gt Mirror Sequencing Time Right gt Dark Interval Dark Interval E Minimum in SXGA approx 375 us Right tg SETAN Eye a ger LCD Gating A Example hod Lon ga re ee CAN Eye names An nm just vert sync widt vert back porc lanking so that internal delay Adj idth 8 back h blanki hat i I del Is long enough for shutter opening closing gating just increase Dark Interval control to start dark interval early enoug Adj i Dark I I l dark i l earl h for shutter opening closing NOTE Not necessary with all signals RESULT y Frame B Right Frame C Left Internal Delay lt Frame A Left Mirror Sequencing Time Dark Interval Dark Interval Right A ing eenen ye A op LCD Gating UA ANA A AAN APR q Example ea AA S a A A a mg zel Left op A Eye e KV e
28. stem with a guarantee of minimum frame delay Your source projector display output and emitters or Z screens can then operate together with precision to minimize cross talk and color artifacts Typically one 3D Stereo Sync Cable can synchronize all glasses or gating devices in a projection array Connect as shown below RS232 IN RS422 ni sooo eeeee c O O O eee JO F ii Input4 Input 3 Green Blue _ Hor Comp DV RS232 OUT GPIO Ethemet u ho SAS ES O ED HO O00000 SD HD OUT GO I ZX lt LOOP FROM Dual SD HD SDI 38 804656 1 LOOPFROM2 2 Input 6 Option 2 Input 5 Option 1 Input ai Input B mi 3D Stereo Sync Cable Output iT i Figure 2 Mirage 3D Stereo Sync Cable Stereo 3D capable Graphics Source Connect 1 or 2 sources Stereo 3D capable Graphics Source Another projector OR e IR emitter e Z screen device TWO STEREO 3D SYNC INPUTS Connect your video card s stereo 3D sync cable to either INPUT A or INPUT B on the 3D Stereo Sync Cable These inputs are identical and allow you to connect two different Stereo 3D sources and conveniently switch the display back and forth between them ONE STEREO 3D SYNC OUTPUT Connect the 3D Stereo Sync Cable output to your stereo 3D sync emitter or Z screen PZE device The L R switching of the device can then be synchronized according to the controlling signal of choice either t
29. tal Systems Inc About This Guide This guide describes the setup and operation of 3D Stereo displays using Christie s Mirage projectors It explains the various functions of the display solution and points to additional information in related manuals You will also find information about optimizing 3D stereo separation for the left and right eyes using CAVELIB EOE software test utility from VRCO Overview Quick Start Mirage 3D Stereo Sync Cable Stereo 3D Setup and Optimization 3D Source Requirements Appendix A Troubleshooting Appendix B Understanding the Projector Adjustments Appendix C VRCO Test Pattern Software Setup Contact and Support Information Christie Digital Systems Inc Using 3D in Mirage 1 2 Using 3D in Mirage Christie Digital Systems Inc 1 Overview A single Mirage projector can automatically display stereographic 3D images as described below Such images require a specialized video signal source as well as additional hardware and software in order to be displayed and interpreted correctly in a typical 3D stereo viewing environment In simple terms images generated from a stereo 3D video source consist of a series of images frames or fields that alternate quickly between two slightly different viewpoints corresponding to our left and right eyes When these frames are displayed fast enough and viewed with special stereo glasses synchronized to the left right L R changes the resulting perceived image ca
30. te the remaining cross talk or ghosting by delaying the display of the each frame Dark Interval adjustments are effective only for sources with high frame rates 1 Adjust Dark Interval until the cross talk disappears and only one set of red green blue bars remains see below um all i tm es a a o a o ns gt lu os a a NUNES ioe N Wa N LA HE aE Sees INS pt Dark Interval Adjust until ghosting disappears td dt lt a VAN eee CEH Em VEEN 111 1 FERAAERLRMEHHR Annan ONNA nn ZN ALAN I I UT Re 1 NE AP I KERRE Hada ARE ENE I am ba NEEE He BERNE 171 De Bl RIN I tT 7 NZ 1 IM Ell PNT ERD 3 L am Lo OON ANNI am EEREN PAREN Bes EBBENEBPAHEREE_ Bee IA I Teer I To II TE SSA NV VT TT ING TT TN s O O NEE een I I TAN NNF AEN VV Am REE BEANE mm HA RAS INL I INZ LIN EBESE INL AM DARDENNE ZUN LAN an NPZ LI I TE TI INT 7 IN 1 eaf Y Y i Y 1 e ab I Y Y Y 1 N LEFT EYE OPEN RIGHT EYE OPEN Figure 12 Clear test pattern with no cross talk in L R images Note Ifyou are setting up Stereo 3D on a blended display once the first projector is set up you will need to adjust the Dark Interval on all projectors to match the projector to which the 3D Stereo Sync Cable is connected Then fine tune Dark Interval for each projector Using 3D in Mirage Christie Digital Systems Inc 5 3D Source Requirements The Mirage S projector is optimized for its SXGA native resolution
31. tput Sync Cable Figure 7 High performance setup Christie Digital Systems Inc Using 3D in Mirage 13 High performance Setup with CRT Monitor This setup requires the use of the Mirage 3D Stereo Sync cable Projector and monitor with 3D Stereo Sync Cable IR Emitter RGB Format 3 4 or 5 wire m vr Workstation PC with o 3D Stereo Stereo 3D capable Utpur Sync Cable Graphics Card Figure 8 High performance setup with CRT Monitor 4 3 Optimization Procedures The optimization steps outlined in this section are all performed with a stereo 3D test pattern For best results refer to the Setup Options table on page 11 to determine which steps to complete and in what order Each step in the table has a corresponding short procedure in this section This section includes the following procedures e Navigating to the Simulation 3D submenu e 3D Stereo Sync Locking Options e Enable Frame Lock e Display the Test Pattern e Match projector to CRT e Optimize the Frame Delay e Optimize the Stereo Sync Delay e Optimize the Dark Interval 14 Using 3D in Mirage Christie Digital Systems Inc Navigating to the Simulation 3D Submenu Stereo 3D is automatically enabled on Mirage S projectors and controlled from the Simulation 3D submenu 1 To access the Simulation 3D Simulation 3D Frame Delay Monitor 1047 submenu navigate 1 Frame Delay 1000 through the menus 2 Dark Interval 1200
32. y need to adjust the Clamp Location option in the Input Levels menu accessed via Image Settings menu with 4 or 5 wire signals COLORS ARE OFF If some grays in your grayscale appears tinted when viewed in 3D your glasses may be slightly slow for the current signal setup 1 If possible adjust the projector s Dark Interval control 2 Double check timing adjustments to the source 3 Use faster glasses PROJECTOR BEHAVES UNEXPECTEDLY for example it changes to cooling down state when the output is plugged in Ensure that GIO port parameters are clear and that there are no Real Time Events RTE that change GIO port parameters Refer to the Serial Communication guide for more information Christie Digital Systems Inc Using 3D in Mirage 21 Appendix B Understanding the Projector Adjustments NOTE All projector menu adjustments are fully explained in the Roadster Mirage S User s Manual shipped with the projector FRAME DELAY Frame delay sets the target latency of video processing through the projector It can be set from slightly more than 1 frame to slightly more than 2 frames with the minimum setting dependent on your source format and whether or not you are also using Christie TWIST image warping Use Frame Delay to synchronize video content between multiple display devices for example allowing a frame delay of 2 enables the same glasses to be used when you are displaying simultaneously from both a projector and a CRT m
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