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WorldViz Peripherals 

123 

PPT EYES 

PPT EYES SPECIFICATION  

  
  

 

  
  
PPT Eyes are meant to be used with optically tracked projection systems like CAVEs, 
Powerwalls and others where they allow for accurate real time tracking of the users 
view point in connection with shutter glasses or polarization glasses, etc. 
  
  
Degrees of 
Freedom 

5 (X, Y, Z, yaw, roll) NOTE: This fully determines left/right eye 
locations needed for stereoscopic viewing. 

Angular Range 

Full 360 deg – both axes 

Precision 

Position: < 0.25 millimeters over 3 x 3 x 3 m volume Rotation: 
0.09 deg 

Accuracy 

Position: <0.25 centimeter over 3 x 3 x 3 m volume Rotation: 1 
deg RMS yaw, 1 deg RMS roll 

Update rate 

180 Hz (PPT H series) 

Latency 

20 ms (PPT H series) 

Range 

15 m 

Battery 

Type: Rechargeable or disposable AAA Endurance: > 24 hours 
typical usage 

Weight 

60 g 

Dimensions 

203 mm x 14 mm x 32 mm 

LED mode 

Passive only 

Protocols 

TrackD, VRPN, PPT Studio 2010 

Содержание PPT-E

Страница 1: ...WorldViz Precision Position Tracker Operating Instructions WorldViz 2011...

Страница 2: ......

Страница 3: ...ng PPT H camera cables 17 Connecting PPT X camera cables 20 Connecting PPT X camera cables International 22 Powering and restarting PPT 27 Activating and de activating cameras 29 4 Camera lighting set...

Страница 4: ...MoCap Device 89 8 WorldViz peripherals _______________________________________94 PPT WAND 94 PPT WAND specifications 94 Configuration 98 PPT Wand with PPT eyes 102 Configuring vizard vr toolkit 105 C...

Страница 5: ...3d 128 Camera 138 2D Plugin 140 Output 141 Post process 142 10 Support ________________________________________________145 Toubleshooting 145 Frequently asked questions 150 Technical specifications f...

Страница 6: ......

Страница 7: ...know about setting up and operating your PPT system However if you have any problems using your system feel free to contact our support team at support worldviz com and we will be more than happy to...

Страница 8: ......

Страница 9: ...r a project always press the Tune button and follow the instructions Tuning tells PPT where the important tracking area is and whether you are tracking fast or slow motion If you change a 2D or 3D plu...

Страница 10: ...PPT User s Manual 4 will restore your PPT s graphical user interface back to the default factory settings which correspond the pictures used throughout the documentation...

Страница 11: ...INSTALLATION QUICK INSTALLATION GUIDE Step 1 See Locate system components for a full parts list of what is included with a PPT system Step 2 See Camera positioning for suggestions on how the place th...

Страница 12: ...national all voltages Connecting PPT E camera cables PPT H Systems International all voltages Connecting PPT H camera cables PPT X Systems United States 110V only Connecting PPT X camera cables PPT X...

Страница 13: ...omputer CAT5e ethernet cables one for each camera Power over ethernet gigabit network switch PPT H PPT computer with power cable keyboard and mouse PPT H cameras 4 or more depending on purchased confi...

Страница 14: ...puter with power cable keyboard and mouse PPT X cameras 2 4 or 8 depending on purchased configuration Combination power video cables one for each PPT camera One 12V DC camera power supply with one lea...

Страница 15: ...y The ideal angle between your cameras is 90 degrees perpendicular Two adjacent cameras directed at angles that are at similar angles near parallel will result in poor triangulation accuracy However s...

Страница 16: ...right walls In the right image coverage is sub optimal due to adjusting the camera views flush against the short top bottom walls For rectangular workspaces these diagrams show how critical your came...

Страница 17: ...ll of the camera Ethernet cables must be connected to the PoE Power over Ethernet gigabit network switch that is supplied to you It does not matter what port each camera is plugged into Note that you...

Страница 18: ...t machine The DHCP server is provided in the PPT Studio under folder name called DHCP Server You can start the server by clicking Run DHCP Server bat Typically on a WorldViz configured PPT E system a...

Страница 19: ...Identify the power connector at the back of the camera and connect it with the power plug of the power video cable NOTE DO NOT PLUG THE POWER SUPPLY INTO THE POWER OUTLET OR TURN IT ON UNTIL STEP 7 ST...

Страница 20: ...ber on each port i e Camera 1 connects to port 1 STEP 7 The PPT system works best if the 12V power supply and the PPT computer are plugged into the same power source So connect the power box to a powe...

Страница 21: ...to run your power video cables so that the power termination matches the power connector on the camera STEP 3 Identify the power connector at the back of the camera and connect it with the power plug...

Страница 22: ...END TO THE POWER SUPPLY BOX UNTIL STEP 7 STEP 6 Connect the BNC plugs at the other ends of the power video cables into the back of your computer Do not connect the power plugs yet The ports are marke...

Страница 23: ...you have completed all the above steps you may turn on the power supply and test the cameras CONNECTING PPT H CAMERA CABLES Step 1 The cameras used in PPT H are smart cameras operating at high resolut...

Страница 24: ...u will need to supply it with AC power Typically you will plug the power supply into a nearby power socket If more length is required you can use any AC extension lead or you can order DC extension ca...

Страница 25: ...fter all the cables are connected to the sync box plug the remaining 12 volt DC power supply into the synchronization box Start tracking Once all the wiring is complete you will need to power up the c...

Страница 26: ...deo cables one for each camera with your PPT These cables have BNC plugs and power plugs on both ends Locate these cables Note One side of the power video cable has a male termination the other side h...

Страница 27: ...BNC plugs at the other ends of the power video cables into the back of your computer Do not connect the power plugs yet The ports are marked 0 red 1 blue 2 yellow 3 green The cable from camera 1 red...

Страница 28: ...he computer end of the power video cables STEP 9 The PPT system works best if the power box and the PPT computer are plugged into the same power source So connect the power box to a power strip with a...

Страница 29: ...deo cables with your PPT These cables have BNC plugs and power plugs on both ends Find these cables Note One side of the power video cable has a male termination the other side has a female terminatio...

Страница 30: ...se terminals Plug one of your T connectors into the video out of camera 1 the camera with the red sticker Do not connect the other two T connectors yet STEP 5 CAMERA 1 ONLY Take one of these cables an...

Страница 31: ...lug the BNC cables into the video capture card on the back of your computer The ports are marked 0 red 1 blue 2 yellow 3 green The cable from camera 1 red should be plugged into port 0 red the cable f...

Страница 32: ...jacks on cameras 2 and 3 Next connect the loose cable from camera one split from the video out into the T connector of camera 2 blue Then use the second cable to connect the T connector of camera 2 b...

Страница 33: ...WERING AND RESTARTING PPT PPT systems are designed to be used as a generic tracking device and require no intervention by the user once it is up and running PPT is able to be run continuously 24 7 if...

Страница 34: ...ch which will reboot the cameras 6 Start up the PPT Studio software and tracking should begin If there are problems with the cameras simply power cycle the PoE ethernet switch which will reboot all th...

Страница 35: ...the PPT Studio software and tracking should begin If you fix up a network problem or other issue with a PPT H camera you will need to restart it 1 Exit the PPT Studio software 2 Power cycle the desire...

Страница 36: ...on the camera and select Active This will activate the camera and it will show images and can be used for tracking once it has been calibrated Camera errors If PPT detects that a camera is not returni...

Страница 37: ...Hardware Installation 31...

Страница 38: ...ectronic devices emit IR Use the large camera view when troubleshooting for interfering light sources Reflective surfaces Sometimes a surface reflects a warm light source that would otherwise not be i...

Страница 39: ...hould always be set above the background noise level This threshold is represented by the blue line in the histogram High Threshold The high threshold is sensor white When beginning a search for a lig...

Страница 40: ...PPT User s Manual 34...

Страница 41: ...button Dark green visualizes the area above the low threshold and light green the area above the high threshold Changing Settings To change the settings 1 Turn off all PPT wireless markers Physically...

Страница 42: ...the figure below Camera 1 is being adjusted In the thumbnail view the histogram shows a distribution which represents the background noise of the tracking environment The 2D view shows the noise as it...

Страница 43: ...the gain to 50 This is the typical setting for a 3m x 3m workspace Workspaces significantly larger or smaller will need to increase or decrease this value respectively For PPT E H Adjust the gain to...

Страница 44: ...cates the removed area as red stipple 6 You can also use the Auto remove mode to remove all regions that are above the camera threshold Alternatively you can restore all tracking areas by selecting th...

Страница 45: ...cquisition Regarding threshold you may find that increasing the high threshold beyond recommended values is a useful technique to eliminate ambient light distractions The cost of having a high thresho...

Страница 46: ...g The goal of calibrating is to teach your system where each of the cameras is located in your workspace All you have to do is allow each camera to see the supplied PPT calibration rig your system wil...

Страница 47: ...certain that your cameras are connected in the correct order To verify this wave your hand or a marker in front of each camera and double check that each camera s physically labeled number matches it...

Страница 48: ...the Rig Size button and select the proper calibration rig In general you should always choose the default size 57cm calibration rig 7 For a standard calibration all cameras should be reset to Uncalibr...

Страница 49: ...at saw less than four markers on the calibration rig 5 Move the calibration rig enough so that some or all those cameras indicated as red can now fully see the calibration rig 6 Once all cameras are c...

Страница 50: ...y if you plan to use every bit of trackable workspace at high speeds e g a dancer s body the process of tuning will let PPT optimize accordingly for this scenario Tuning your PPT system Before beginni...

Страница 51: ...our application 6 Inspect and then accept the suggested settings If the values look very large compared to the usual values or the defaults you may need to perform the tuning process again or perhaps...

Страница 52: ...PPT User s Manual 46...

Страница 53: ...tion The talk button is automatically active while the PPT Studio is under 3D view You can switch it off by clicking the talk button under 2D view VRPN 7 Recommended The Virtual Reality Peripheral Net...

Страница 54: ...etween the application and all of the devices using the appropriate class of service for each type of device sharing this link For additional information on VRPN http www cs unc edu Research vrpn inde...

Страница 55: ...o support Motion Builder Use this for connecting to a separate computer running MotionBuilder 7 5 to drive full body inverse kinematics simulations You will need to install the PPT MoCap plugin on you...

Страница 56: ...acing hostname with the local name or IP address or you PPT computer Returned is the tracker object that can subsequently be used in the samples below vrpn viz add vrpn7 dle tracker vrpn addTracker PP...

Страница 57: ...d Z dimensions are given a 2 0 scale factor while the Y altitude dimension is kept to the default of 1 0 link postScale 2 1 2 target viz LINK_POS_OP Connect to PPT using viztracker This is the most co...

Страница 58: ...m vizuniverse import import __main__ import hand Create a custom composite that handles tracking display and input devices all together def createCustomComposite id 0 Trackers Initialize an empty comp...

Страница 59: ...composite createLeftHand hand MultiInputSensor pinchButtons viz KEY_PA GE_UP viz MOUSEBUTTON_LEFT fistButtons viz MOUSEBUTTON_MIDDLE composite createRightHand hand MultiInputSensor pinchButtons viz KE...

Страница 60: ...r viztracker createCustomComposite createCustomComposite viztracker go viz add gallery ive Connect to PPT using shared memory or legacy serial communication NOTE These techniques are discussed for the...

Страница 61: ...the PPT wireless marker s actual altitude should be retained and only the X and Z axes reset to zero remove the viz RESET_Y flag from the example above Accessing the raw data To access the raw data fr...

Страница 62: ...With VRPN Support If your 3rd party application includes support for VRPN then you should be able to use this since PPT provides a VRPN 6 and VRPN 7 output server as plugins VRPN is portable across m...

Страница 63: ...nd test the output Other Applications Not Supported If your 3rd part application does not already support VRPN WorldViz recommends that you use the freely available VRPN API to write your own client s...

Страница 64: ...PPT User s Manual 58 USING THE 3D VIEW...

Страница 65: ...king to bring up a menu of options for controlling the Markers Cameras Views and Grid settings The talk button is always active when 3D view is selected Dragging with the right and left mouse button w...

Страница 66: ...cessing plugin markers can also contain orientation information as well The units shown here are in meters for position and Euler angle degrees for rotation ORIENTATION AND POSITION PLUGINS PPT can de...

Страница 67: ...s there should be no filtering You can use 100 to disable filtering when you want to filter only one component 5 The cutoff value is the maximum distance a change can be before the filtering is disabl...

Страница 68: ...plugin 1 Right click on the Intersense device you would like to calibrate and select the Reset feature 2 A calibration Wizard will appear and you will be asked to align your device so the InertiaCube...

Страница 69: ...kers to at least 2 in the PPT interface 3 Setup the orientation sensor to provide data to marker 1 If using an Intersense InertiaCube do this with the Intersense plugin described above Make sure you c...

Страница 70: ...You Need 1 Two PPT markers attached on the left and right sides of the head or LCD shutter glasses Software Configuration 1 Set the number of markers to at least 2 in the PPT interface 2 Add the CAVEy...

Страница 71: ...correct number of markers for the rigid body in the main PPT interface must greater than 2 2 Add the Rigid body Post Process plug in found in the Configure Panel 3 Place the rigid body on the ground...

Страница 72: ...g in found in the Configure Pane 2 Right click in the white area to Add a new input device 3 Enter the path for the VRPN server on the rendering PC which will be of the format Comp0 hostname Replace h...

Страница 73: ...urements in local coordinates in which right is X up is Y and forward is Z 2 In the Configuration Pane add a Local offset Post process Plug in if it is not already added 3 Click the Configure button r...

Страница 74: ...er coherence can fail is when two markers are brought together so they are touching and then moved away again Keeping the identification of each marker coherent is important in some applications parti...

Страница 75: ...knowledge about the layout of the markers on the user If the markers are arranged correctly Marker ID can also be used as part of a motion capture system For more information about implementing motio...

Страница 76: ...to set the number of markers in the PPT interface the plugin will adjust this automatically 2 Make sure that Talk Mode is enabled in the PPT interface The plugin will not work if Talk Mode is off 3 Ad...

Страница 77: ...ies of Post Process plugins outlined here Camera visualization View 3D tracking region quality Use When You want to find out how many cameras can see a particular point in your tracking space Software...

Страница 78: ...indicates 3 cameras while green indicates 4 or more cameras You should aim to have green for as much of your space as possible Ray visualization View 2D intersections from each camera Use When You wa...

Страница 79: ...un Software Configuration 1 Add the Timing report Post Process Plug in found in the Configure Pane 2 The plugin will start up and a window with bar graphs and timing for each plugin stage Options 1 Th...

Страница 80: ...Live Characters package needs to be installed Make sure MotionBuilder is already installed To install the Live Characters package do the following Execute the installer called LiveCharacters_2 00 000...

Страница 81: ...step before the installation process you can choose the folder in which to install Live Characters It is recommended to install to the default folder as this manual assumes the default Click Install...

Страница 82: ...e absolute identification of a subject s head hands and feet Your client application receives the head hands feet positions in a constant order and even if PPT gets confused about the marker ordering...

Страница 83: ...st Process Plugins Click on the Intersense plugin to bring the Intersense options window up Click the Add button enter the COM port number your IC2 IC3 is connected to and select the PPT wireless mark...

Страница 84: ...sensor id which is typically 0 and the light to assign it to see above instructions Figure 4 Add VRPN input source and attach it with a marker Add the Motion Builder 7 5 Output Plugin found in the Co...

Страница 85: ...Settings Tab lets you choose model presets and the orientation source The Advanced Tab is only recommended for advanced users or if you use the Fake hips mode without arms PPT MOCAP MARKERS TAB The M...

Страница 86: ...be set to Pos 6DOF Fake Fixed or None Figure 1 blue arrow The hands can individually be set to Pos 6DOF or None Figure 1 red arrows The feet modes are linked together and can be set to Pos 6DOF or No...

Страница 87: ...strictions The downside however is that if the markers are confused they will stay swapped until the reset T pose is detected or until the distance between the swapped markers is close enough to swap...

Страница 88: ...height Feet height and Estimated hip height are measured during the initialization period You can manually adjust those values if needed The recommendation is however to re initialize instead The Hip...

Страница 89: ...t one is assigned to the first marker the right one to the second marker Memory Number of frame events that are kept in memory Figure 1 MoCap Plugin configuration window Advanced PPT MOCAP INITIALIZE...

Страница 90: ...sh and skip the below instructions about the hips pose NOTE The T pose you captured serves as reset pose Move into the reset pose once markers got swapped and you would like to swap them back Figure 1...

Страница 91: ...pose that was captured in the Initialize Wizard is played back and is overruling the regular PPT output While the T pose is played back all adjustments in the Markers tab are grayed out Figure 1 image...

Страница 92: ...OTIONBUILDER PLUGIN If you want to use the WorldViz PPT system to stream 3DOF and 6DOF point data into MotionBuilder you need to install the PPT MotionBuilder plug in called PPT MoCap Make sure Motion...

Страница 93: ...enarios 87 Figure 1 PPT MoCap Wizard By clicking Next and accepting the License Agreement with the button I Agree you have the option to choose the components you want to install Figure 2 PPT MoCap Co...

Страница 94: ...ual chooses Click Install to finally install PPT MoCap and select Finish after the installation to close the wizard After restarting MotionBuilder try to locate the PPT MoCap plug in This plug in can...

Страница 95: ...in can be found in the Asset Browser Expand the Templates asset by clicking on the and select the Devices asset The PPT MoCap device is listed figure 1 red arrow Figure 1 PPT MoCap device Drag and dro...

Страница 96: ...ver Address the Marker Count and the Sample Rate in frames per second figure 3 Enter the name or the IP address of the PPT computer in the Server Address field and enter the number of markers you want...

Страница 97: ...e 4 red arrow Check Live to visualize the real time data and Recording to prepare for recording the PPT data figure 4 green arrows In the Model binding drop down menu select Create to create the actua...

Страница 98: ...te an instance of that class called an object As an analogy you can imagine the class as a car factory and the objects instantiated by the class as cars coming from that factory Once the car is made i...

Страница 99: ...Usage Scenarios 93...

Страница 100: ...conjunction with a WorldViz Precision Position Tracker PPT this hand held tracking device is equipped with dual tracker LEDs for optical orientation assist an internal high quality inertial sensor fo...

Страница 101: ...d then other L preset left hand IDs are 2 for left LED 7 for right LED Switch positions Center OFF Down standard operation Single left wing tracked IR LED activated either left or center left dependin...

Страница 102: ...er over 3 x 3 x 3 m volume Rotation 1 degree RMS yaw 25 degree RMS in pitch roll Update Rate 180 Hz PPT H series Latency 20 ms PPT H series Range 33 m Battery Type Rechargeable Lithium Ion Endurance 8...

Страница 103: ...onnects to host PC 8 4 VDC universal charger Storage case RECHARGEABLE BATTERY Battery specifications Capacity 2200mAh Voltage 7 2V peak at 8 4V Dimensions 2 63 x 1 45 x 0 7 inch Weight 3 2 oz Max cha...

Страница 104: ...step does not need to be repeated Installing receiver drivers The drivers for wand receiver should be pre installed on your PPT computer If you are attempting to use your wand connected directly to a...

Страница 105: ...f it is currently selected Now check 3 under Physical ID and verify that 3 is selected under Virtual ID NOTE If you re also tracking other markers in your scene i e PPT Eyes you must now use the Marke...

Страница 106: ...vice Also select the proper light number and hit Add in the end 7 If for any reason that you want to change the light number you can configure the light number in Post Process PPT Wand by right clicki...

Страница 107: ...battery Buttons 5 binary digits represent 5 different buttons individually Each digit will show 1 when the corresponding button is pressed otherwise it shows as 0 zero Joystick L R The normal value i...

Страница 108: ...up it is recommended to follow section 2 2 Configuring WorldViz PPT system for wand use at this stage For PPT Studio version older than 3 21 5791 while PPT Eyes do not need to be configured first its...

Страница 109: ...Configuration 103 7 For PPT Studio version older than 3 21 5791 drag to re order PPT Eyes so that it is below Marker ID and above PPT Wand in the Post Process...

Страница 110: ...o configure the PPT Eyes plug in as its default settings are correct for nearly all uses The default value is shown below 9 You should now see orientation data shown for marker ID 1 This is the ID dat...

Страница 111: ...this here C Program Files WorldViz Vizard4 or Vizard30 python viztracker py To properly configure viztracker for a PPT Wand use the following settings Display any setting does not affect Wand Tracker...

Страница 112: ...the other 2 unused marker ID ie 4 and 5 However each wand has to go through the pairing process with its receiver If you have a wired IC2 connected instead there is no pairing process needed Please r...

Страница 113: ...e head tracking light number 1 You may choose the other light number for combining the orientation data of IC2 with different Marker ID 4 Hit Close once you finish adding the IC2 device ADVANCED USAGE...

Страница 114: ...is down you have to get position data from PPT vrpn viz add vrpn7dle define markerID of Wand in PPT markerID 3 posTracker vrpn addTracker PPT0 localhost markerID 1 now you can merge the intersense tra...

Страница 115: ...as the Output plugin in the Configuration panel 3 If PPT Wand is used please make sure you have both MarkerID and PPT Wand plugins selected For the MarkerID plugin make sure the PPT wand is detected...

Страница 116: ...for VRPN connecting to PPT Studio include stdio h include conio h include vrpn_Analog h include vrpn_Button h include vrpn_Tracker h define ANALOG_ADDRESS PPT_WAND2 10 24 5 240 8945 define BUTTON_ADDR...

Страница 117: ...r the VRPN tracking section of TechViz configuration file the sample setting below allows you connect a PPT Wand and head tracker through VRPN 4 1 f vrpn tracking vrpn number of devices 2 vrpn device...

Страница 118: ...e you have both MarkerID and PPT Wand plugins selected For the MarkerID plugin make sure the PPT wand is detected by the PPT with the correct ID default ID number 3 for single LED mode power switch DO...

Страница 119: ...ON FOR MAGNETIC DISTORTION There may be scenarios where the internal wand orientation sensor is affected by magnetic interference in your environment If this is the case then the PPT Optical Heading p...

Страница 120: ...tation to the left ID value the result of merging the two IDs from previous step 4 Optical Heading add this plug in if it s not already in Post Process and configure it with the following settings a C...

Страница 121: ...mmable tracker LEDs that can be configured to ID values 1 8 These steps explain how to change either LED 1 Identify the hole on the back of the PPT Wand which is on the same side as the tracker LED yo...

Страница 122: ...ID value do nothing for 2 sec and the ID will be stored indicated by a stead ON power light Remember only ID values s 1 8 are available as configurations Configurations modes 9 12 have other purposes...

Страница 123: ...ur PPT computer called DeviceTool exe which can be found in your start menu under WorldViz PPT Studio Launch this tool and then follow the steps below If your version of PPT does not contain this tool...

Страница 124: ...ons were found then there are two steps to correct this First try power cycling the Wand waiting 10 sec and redo Resetting the link step If that too fails then the next step to try is moving the recei...

Страница 125: ...link ID Press No because we recommend doing this step further below This should take you to a screen that shows a green ready light Next we need to now establish the link between the receiver and the...

Страница 126: ...you might see the stn13 7082 box not as green but as grey next to the column of 4 boxes If you see that click on the stn box and drag it into the top empty box in the row Setting link ID Now we should...

Страница 127: ...ctionality Now we can test the wand s joystick and 5 buttons Select Test Test Joystick and the screen should resemble the image below Verify the joystick motion and the button clicks which all registe...

Страница 128: ...rs if it s not already installed you may not have to do it for Windows 7 These drivers enable the USB connection of the wireless Intersense receivers When you plug the wireless Intersense receiver int...

Страница 129: ...is fully determines left right eye locations needed for stereoscopic viewing Angular Range Full 360 deg both axes Precision Position 0 25 millimeters over 3 x 3 x 3 m volume Rotation 0 09 deg Accuracy...

Страница 130: ...at least 2 and turn on the PPT Eyes device You should now see two tracked lights in the 3D view You will need to increase this value to be larger than 2 if you are tracking other objects in your envir...

Страница 131: ...es if the plugin determines that the user is facing away from the display Because of this you may see an error warning in the Messages panel This is normal operation If you find that the orientation i...

Страница 132: ...PPT User s Manual 126 Configuring PPT Eyes To configure PPT Eyes click on the PPT Eyes plugin in the active list This will bring up the Settings dialog...

Страница 133: ...his tolerance is exceeded Assume User Always Facing Forwards By default this mode should be turned off The standard operating mode allows the user to rotate around and attempts to guess which directio...

Страница 134: ...n you quit PPT these will be saved to the standard ppt cfg so that when PPT restarts it will be configured as it was before Loading factory settings If you re having difficulty finding user interface...

Страница 135: ...cess 3D core v 3 1 This is a 3D algorithm that adds weighting to all the computations to improve robustness and accuracy For example tracking results that are closer to the camera are given higher wei...

Страница 136: ...d values nor tuning process The only setting that this plugin has is to set the minimum number of rays cameras for creating a valid tracking point By default it is set to 2 If the number of cameras th...

Страница 137: ...ts from far away Markers which have just recently appeared will have a lower weight than a marker which has been visible steadily for some time This plugin needs to be configured for optimal performan...

Страница 138: ...PPT User s Manual 132...

Страница 139: ...each camera image for a single LED marker In the following example four LED markers are being tracked by cameras A and B This plugin needs to match a light seen in camera A to one of the lights seen i...

Страница 140: ...mum distance which a point could have moved from one frame to the next Users are encouraged to use the 1 point Test unless experienced with the system The 1 point Test is a quick Tuning operation whic...

Страница 141: ...This value represents the importance of the 3D weight component Increasing this value will give more significance to cameras which view the LED markers from the optimal distance b Optimal Distance mm...

Страница 142: ...cameras in order to create a valid tracking point 3D CORE V2 0 This is the 3D processor that was used by PPT version 2 0 It is distributed for rare cases in which this processor may out perform the v...

Страница 143: ...ision of PPT The units are in pixels 2 Merge Tolerance mm Affects the accuracy and precision of PPT The units are in millimeters 3 Max Frame to Frame Jump mm It is the maximum distance which a point c...

Страница 144: ...ker around as if you were using it in your application Make sure that you cover the entire space the marker will move during your application and move the marker at the maximum speed the marker will m...

Страница 145: ...ould be used to minimize motion blur with very fast objects If you check the box disable synchronization then this allows much larger shutter times but synchronization is disabled Typically this check...

Страница 146: ...ximum since faster rates are not possible at that exposure time Brightness Apply an additive brightness shift to your PPT camera capture images Range from 0 to 255 128 is the recommended default Broad...

Страница 147: ...ncrement V 2 Velocity threshold 0 03 History length 12 2D core v 3 0 This plugin is included for compatibility with older PPT releases and by default is not used any more The 2D core v3 1 plugin is re...

Страница 148: ...ter The Vizard vizppt dls automatically searches for a shared memory connection before searching via other means such as RS 232 Motion Builder 7 5 Use this for connecting to MotionBuilder to drive ful...

Страница 149: ...hips Optical heading Calculate a heading value using two marker lights and using this to compensate for magnetic distortions or gyro drift PPT Eyes Given two PPT wireless markers 3DOF data only this...

Страница 150: ...PPT User s Manual 144...

Страница 151: ...perly when turned on To fix this problem switch the power off and on to the cameras only and wait 3 minutes for them to reboot and try again Cables are loose If power cycling your cameras and restarti...

Страница 152: ...eras will not have this problem since they automatically report their serial numbers over the network Initial camera driver Error Failed to load PPT X Error Failed to load PPT H Error Failed to load P...

Страница 153: ...arker cross hairs are not flickering in the region having tracking issues If a problem is observed see troubleshooting Marker issues Calibration may be poor A quality calibration is critical to everyt...

Страница 154: ...ld redo Adjusting camera settings 3D tracking is poor If your marker cross hairs are steadily tracked but your 3D data markers are flickering then follow instructions for Data dropout in this troubles...

Страница 155: ...s not matching the markers Extraneous light source Very likely there is an extraneous light in your workspace that is being processed as a PPT wireless marker This is very easy to resolve darken the r...

Страница 156: ...Make sure that the Talk button is turned on Contact technical support For immediate assistance with PPT setup and troubleshooting go to www worldviz com support and send an email to ppthelp worldviz...

Страница 157: ...rees vertical What is the H V aspect ratio of the cameras All PPT models are 4 3 How do I specify Virtual North When you calibrate your PPT system the virtual north is the direction that the Z axis on...

Страница 158: ...1 20 000 chopper so you get smaller pieces The thing that complicates this though is the arrangement of the cameras Placing two cameras close to each other so there s a tiny base distance between them...

Страница 159: ...hernet using VRPN Ambient conditions Indoor fluorescent only Size weight Processor 420 x 370 x 180 mm 10 kg Sensors 45 x 32 x 92 mm 145 g Targets 3 x 3 x 5 mm 2 g Software support Directly connect to...

Страница 160: ...Maximum number of targets Up to 32 independent 3DOF bodies Maximum number of cameras System can be expanded to 32 cameras Precision 0 25 millimeters over 3 x 3 x 3 m volume optical sensor is 1 80 000...

Страница 161: ...cameras Please contact WorldViz for details on this tradeoff For a marker to be tracked it must be visible by two or more cameras Overall tracking space dimensions are determined by the camera range c...

Страница 162: ...led Ambient conditions Indoor fluorescent only Size weight Processor 420 x 370 x 180 mm 10 kg Sensors 100 x 40 x 40 mm 200 g Targets 3 x 3 x 5 mm 2 g Software support Directly connect to WorldViz Viza...

Страница 163: ...ort 157 Help forum www worldviz com forum Online support www worldviz com support Phone Fax Phone 1 805 966 0786 Fax 1 866 226 7529 Address 27 West Anapamu Street Suite 101 121 Santa Barbara CA 93101...

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