Differences

This shows you the differences between two versions of the page.

--- motive_calibrating [2019/08/20 09:30] – 10.128.96.101
+++ motive_calibrating [2019/08/21 08:26] – [Calibration with Passive Wand] 10.130.132.100
@@ Line 16: / Line 16: @@
 Make sure no reflective objects are visible to the system. **Remove all all reflective objects from the space or cover them**. Many shoes have actually reflective surfaces, so make sure to either tape them or take them off for the following processes.
-Reflections can be seen in the **Camera Preview** pane, witch can be zoomed with the mouse wheel. Some small reflections on the floor can not be avoided and should not influence the tracking.
+Reflections can be seen in the **Camera Preview** pane, which can be zoomed with the mouse wheel. Some small reflections on the floor can not be avoided and should not influence the tracking.
 **Switch back cameras to object mode** by ''selecting all cameras in the Device pane'' and pressing the ''grayscale symbol'' to continue calibration.
@@ Line 26: / Line 26: @@
 {{ ::motive-28.png | Object Mode reduced reflections}}
-The only big refelections ara actually the cameras.
@@ Line 33: / Line 31: @@
 ===== Camera Settings =====
-Switch the cameras back the objective (tracking) mode mode by ''selecting all cameras in the Device pane'' and then pressing the ''crosshair symbol'' on one camera.
+**Place a marker** inside the tracking space as a reference.
-{{:switchvideomode.png?400|}}
+{{ ::motive-23.png?300| Camera Settings}}
-check the Tracking Parameters
+ **Select all cameras** in the ''Devices Pane'' and adjust the following camera settings only if the reference is not clearly visible and/or there are a lot of false marker detections caused by reflections.
-{{:tracking_parameters.png?400|}}
+== Gain ==
-Tested settings are:
+Set Gain to the highest valueif you use the whole motion capture space.
-  * Camera Frame Rate: 100 Hz
+''Recommended Gain Value: 8 High (Long Range)''
-  * Exposure: 120
-  * Threshold: 210
-  * Gain: 8: High (Long Range)
+== Exposure ==
-adjust this values until the reflections from the floor are acceptable.
+Longer (high) exposure values makes small markers more visible, but high values can introduce false markers. It is best to minimize the exposure setting as much as the markers are clearly visible in the captured images and that there are as less false markes as possible. **Set the exposure to the lowest possible value that the marker is still visible and false markers are reduced to a minimum**.
-== LED ==
+''Recommended Exposure Value: 100''
-Set LED
+== Threshold ==
-== Exposure ==
+Keep the **threshold as high as possible to remove false reflection but keeping markers still visible**.
-Longer (high) exposure values makes small markers more visible, but high values can introduce false markers. It is best to minimize the exposure setting as much as the markers are clearly visible in the captured images and that there are as less false markes as possible.
+''Recommended Threshold Value: 220''
-== Threshold ==
-Keep the threshold as high as possible to remove false reflection but keeping markers still visible.
+===== Calibration with Passive Wand =====
+Make sure that the **Tracking Mode is set to Passive**. Otherwise, press ''Passive, Active'' Symbol in 3D View.
-===== Calibration with Passive Wand =====
+{{::motive-3.png?200| Passive Tracking Mode}}
-Once all the reflections are removed, clear the previously set masks by pressing ''Clear Mask in the Calibration pane'':
+=== Masking ===
-{{:clearmask.png?400|}}
+Once all the reflections are removed, Clear the previously set masks by pressing ''Clear Mask'' in the Calibration pane. Then set the masks again by pressing ''Mask visible''. it is important that nobody is inside the space at this moment.
+{{ ::motive-31.png?300| Wand configuration & Masking}}
+=== Wanding ==
+Select ''OptiWand CW-500 (500mm)'' in the Calibration pane as wand type and press ''Start Wanding''.
+Take the ''passive wand'' (with grey reflectors), **walk trough the tracking space** and **swing the wand continuously in front of all cameras** and also in the middle of the space.
+The cameras will indicate with a blue LED light, when they detecting the markers of the wand (also indicating the direction by the position of the blue light in the circle). The LED light will turn into green when the wanding was successful. Do not wand to close to the cameras, **keep at least 3m distance from the cameras**.
+Keep on **wanding util each cameras LED circle is fully green** and you have reached **at least 5000 samples** on each camera.
+{{::img_0711.jpeg?200| Camera indicating wanding with blue LED}}
+{{::img_0712.jpeg?200| Camera indicating wanding with blue LED}}
+{{::img_0713.jpeg?200| Camera indicating completed wanding with green LED}}
+{{::motive-17.png?300| Wanding Samples per Camera}}
+{{::motive-15.png?380| Wanding Visualization}}
+After wanding, press ''Calculate'' to solve the camera positions. Solving takes some time. Only if the result is **Exceptional**, you will get good tracking results. Otherwise, repeat the calibration process and check for reflections.
+{{::motive-19.png?400|}}
+=== Ground Plane ===
+If you plan to use the tracking system with projections, take special care to position the groundplane as precise as possible over the markers.
+{{::img_0715.jpg?300| Ground Plane}}
+{{ ::motive-29.png?300 Set Ground Plane|}}
+Place the L shaped ground plane in the **middle of the room**, facing the long side to the large door.
+Press ''Set Ground Plane'' in the Ground Plane tab in the Camera Calibration pane.
+If you get an error message, that no Ground Plane can be found, try to find the 3 Markers in the 3D view, select them and press ''Set Ground Plane'' again
+If setting Ground Plane is successful, you will be promted to **save the calibration**. Choose [[motive_sessions|your session folder]] and create a subfolder **Calibration**.
+The calibration is now finished.
 ===== Calibration with Active Wand =====
-then set the masks again (press "Mask visible"). it is important that nobody is inside the space at this moment.
+Make sure that the **Tracking Mode is set to Active**. Otherwise, press ''Passive, Active'' Symbol in 3D View.
+{{::motive-4.png?200| Active Tracking Mode}}
+=== Masking ===
+Once all the reflections are removed, Clear the previously set masks by pressing ''Clear Mask'' in the Calibration pane. Then set the masks again by pressing ''Mask visible''. it is important that nobody is inside the space at this moment.
+{{ ::motive-30.png?300| Wand configuration & Masking}}
+=== Wanding ==
+Select ''Micron Series (500mm)'' in the Calibration pane as wand type and press ''Start Wanding''.
+Take the ''active wand'' (with battery) and **turn it on** on the back, **walk trough the tracking space** and **swing the wand continuously in front of all cameras** and also in the middle of the space.
+The cameras will indicate with a blue LED light, when they detecting the markers of the wand (also indicating the direction by the position of the blue light in the circle). The LED light will turn into green when the wanding was successful. Do not wand to close to the cameras, **keep at least 3m distance from the cameras**.
+Keep on **wanding util each cameras LED circle is fully green** and you have reached **at least 5000 samples** on each camera.
-{{:clearmask.png?400|}}
+{{::img_0711.jpeg?200| Camera indicating wanding with blue LED}}
+{{::img_0712.jpeg?200| Camera indicating wanding with blue LED}}
+{{::img_0713.jpeg?200| Camera indicating completed wanding with green LED}}
-once the masks are set, the space is ready for wanding. make sure you are using the correct wand (500mm)
+{{::motive-17.png?300| Wanding Samples per Camera}}
+{{::motive-15.png?380| Wanding Visualization}}
-{{:startwanding.png?400|}}
-keep on wanding until each camera has at least 1500 Samples:
+After wanding, press ''Calculate'' to solve the camera positions. Solving takes some time. Only if the result is **Exceptional**, you will get good tracking results. Otherwise, repeat the calibration process and check for reflections.
-{{:wandingt.png?400|}}
+{{::motive-19.png?400|}}
-press calcualate:
-{{:calculate.png?400|}}
+=== Ground Plane ===
-once the result looks like this:
+Make sure that the **Tracking Mode is set to back to Passive**. Otherwise, press ''Passive, Active'' Symbol in 3D View.
-{{:solution.png?400|}}
+{{::motive-3.png?200| Passive Tracking Mode}}
-confirm to apply:
+If you plan to use the tracking system with projections, take special care to position the groundplane as precise as possible over the markers.
-{{:applysolutiondialog.png?400|}}
+{{::img_0715.jpg?300| Ground Plane}}
+{{ ::motive-29.png?300 Set Ground Plane|}}
-and as the last step set the ground plane. The ground plane L has a defect waterbalance, so please do not adjust the leveling screws, it should be ok the way it is now.
+Place the L shaped ground plane in the **middle of the room**, facing the long side to the large door.
-{{:setgroundplane.png?400|}}
+Press ''Set Ground Plane'' in the Ground Plane tab in the Camera Calibration pane.
-Vertical Offset is the distance from the ground to the center of the reflectors.
+If you get an error message, that no Ground Plane can be found, try to find the 3 Markers in the 3D view, select them and press ''Set Ground Plane'' again
-the ground plane Z-Axis should point towards the computers. there are three markers on the trackingspace that indicate the position. If you plan to use the tracking system with projections, take special care to position the groundplane as precise as possible over the markers.
+If setting Ground Plane is successful, you will be promted to **save the calibration**. Choose [[motive_sessions|your session folder]] and create a subfolder **Calibration**.
-{{:groundplate.jpg?400|}}
-save the callibration file inside [[motive_sessions|your session folder]].
+The calibration is now finished.
 {{:savecalibration.png?400|}}