Xangle Camera Server Pro v1.10.1
- Unzip the file on a folder on your desktop
- Launch xangle-server.exe
- The system is going to request your credentials. Use the login/password that have been provided
- Select the license (top left), then click on “load in Xangle Server”
- From there, you should be inside the app.
- Connect your cameras by USB
- Click on the camera count (top right) and enter the number of cameras you have connected to your pc (how many cameras are expected by the app?)
- Connect your trigger system to your cameras
A few additional key points (from our online documentation)
Ordering your cameras
The easiest way to order your cameras is to use our auto system.
- Start by making sure all of your pis and cameras are recognized by the app. To do so, make sure the numbers in the parenthesis match (screenshot 1)
- Turn off all of your cameras.
- Turn your cameras on again, one by one, starting with the first one. Make sure your camera gets connected to the app before turning the following camera on.
- Once you've turned on all of your cameras, and that you see them all on the webapp, click on the "Automatically assign camera numbers" button (screenshot 1).
- The numbers will be assigned automatically in the order the cameras have started.
If you happen to have an issue with a camera that is not numbered correctly, or you have two cameras that you want to swap, you can either use the "Swap two camera numbers" button or click on one of the cameras and manually assign a number to it, using the "Assign number" button
Xangle provides tools to automatically re-align images after they have been shot in order to create smoother bullet time animation.
This automatic re-alignment process require an initial calibration using markers placed on a custom-made calibration stick.
In order to execute the calibration itself, a few step need to be followed:
- Manual (physical) alignment & focus of the cameras, targeting the calibration stick.
- Finding the proper camera settings
- (optional) Calibration settings adjustments
- Calibration result check
- (optional) repeat 2 or 3 until the results are good
The calibration stick should be located as close as possible from the position of the subject. If you are using a full 360 degrees rig or an arc, that should match the center of the associated circle.
Once placed, aim the cameras at the center of the calibration stick as show on the figure above. We recommend using the liveview on the back of the camera to fine tune the position of the cameras and adjust the focus. You can use grid display to help. We also recommend using the 10x digital zoom to fine tune the positioning and the focus of the camera.
The goal is to obtain a pitch black image with only the markers showing up with a highly contrasting color.
In a relatively dark environment the following camera settings should give you good results:
- ISO: as low as possible - 100 or 200
- aperture: around f-4
- shutter speed: between 1/100 and 1/200
- image quality: higher the better. Between medium and larger should be good
But feel free to adjust the ISO, aperture and shutter speed until you get as close as possible from the "ideal" image where only the markers are visible.
At this point, you should be able to do your first calibration shot by going to the calibration tab and pressing the "Calibrate Cameras" button
after a few seconds, you should see the results of the calibration.
The first panel on top is a general overview of the detection:
- Green means that 2 trackers were found, you will still need to check if the trackers are properly delimited (see below).
- Yellow means that something is probably wrong with the marker detection.
- Red means the detection failed.
Next is a detailed summary of the detection for each camera:
The calibration scores indicate how far are the detected markers from the ideal position in terms of:
- Horizontal error (yaw axis)
- Vertical error (pitch axis)
- Angle error (yaw axis)
The "marker consistency" is a measure of the difference in areas for the top marker vs the bottom marker. It is not as important as the other scores although a high value is definitely not a good sign.
You can click on the preview image to get a full screen view of what the algorithm has detected.
If you’re still having issues, start all over and follow these 10 steps:
- Place the calibration bar at the proper position (where your subject is going to stand)
- Calibrate your cameras manually towards the calibration bar (physically, using the ball heads)
- Go in the calibration module in Xangle, set your resolution to small jpg, take a test shot
- Make sure that your 2 markers are properly visible. If not, adjust your camera settings
- Once your markers are well defined, press the calibration button again.
- From the calibration settings panel, pick the color of the marker (click on it)
- Do another calibration. This will get you closer as you now have the right color / settings
- If it's still not picking the markers, reduce the size of the search box (using the sliders). This is going to discard any elements outsize of the bounding box
- If it's not enough, place a black fabric behind the curtain to make sure that the 2 markers can easily be identified by our software
- Once you have a decent calibration, you can increase the resolution to Large Jpeg. This is going to get you a better calibration
*NEW*: You can also calibrate manually the markers. This solution is easier when working in difficult conditions (a window in the background for instance. Check out this tutorial: https://vimeo.com/295686367/6aae276387.
Eric Paré and the Xangle team - https://theXangle.com