Posts Tagged: DataFromSky Viewer

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New version of the Viewer can export headway data

We have recently released a new enhanced version of DataFromSky Viewer! You can download the demo package at the home page. The list of differences includes a lot of things, so let’s take a look at few of them.

New feature? Calculate and export headways!
Have a look on the picture below, how to display the headway data in the Viewer. It is important to have the gates set properly per each lane to get the most accurate data. Once you have all the gates defined, choose one gate in the Traffic Analysis Gates box and click on button “Show” in More Statistics option. In a newly opened window, there is possibility to click on Calculate headways. The system will automatically calculate headways for all defined gates in the video. The headway data can be exported to the CSV file, simply by clicking on “Export”.

Movement Dynamics Graph
We have visualized movement dynamics for each trajectory into a graph containing information about the vehicle’s speed and acceleration (total, lateral or tangential). This graph can be created for each selected trajectory.

Some other improvements…

  • Added option in CSV trajectory export to select time origin of the exported time stamps. Three options are available (the timestamp will be exported in accordance to the selected option):
    1. Start of Video Sequence
    2. Start of Tracking Log
    3. Start of Trajectory
  • Rewritten Gap-Time/Time-to-follow analysis to support better fine-tuned parameters
  • Added dialog for export of Gap-Time/Time-to-follow to enable user provided parameters for the analysis and export
  • Added manual (in pdf file) explaining the Gap-Time/Time-to-follow analysis
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    Multicriteria selection of trajectories in DFS Viewer

    How to apply multicriteria selection for all trajectories and choose only the ones you want? With DataFromSky Viewer – sofisticated software for advanced traffic data interpretation and visualization, you are able to create not only the simple Origin Destination Matrix, but with advanced setttings, the multi-criteria selection for the trajectories can be applied.

    Following gif presents detailed process, how to do it:

    Usecase shown in the gif
    If you want to track particular path and see how many vehicles have used that combination, a selection tool can be used.
    In step 1, selection criteria for Entry and Exit gate were defined and all the trajectories, which have not used this combination were removed. After this selection, 4 trajectories remain.
    Step 2 – As we wanted to know, how many cars leaving the service station in the South exit will turn right on the crossroad, another selection critera was applied. This condition specifies that only trajectories, which have used the combination Entry gate: south exit of the service station and Exit gate: turning right on the traffic lights, will be shown. Finally, only 2 trajectories left, which fulfill all the above defined criteria.

    Why is the multi-criteria selection useful?
    – show only the trajectories you want
    – monitor and analyze traffic behavior in a defined way
    – monitor time cars spend in service station / facilities
    – find traffic patterns, identify problematic zones

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    Boxed version of DataFromSky Viewer is available!

    We are pleased to announce that DataFromSky Viewer is available in a box version as well. And depending on your needs, this is not a bad option! Sometimes, a physical item is required. The box contains a DVD with the software, a printed user guide and DataFromSky brochure. Email, phone and Skype support can not be printed and put into the box, but are part of the deal, of course!

    DFS Viewer Box Version

    For more information about purchasing box version, please write to us at info@datafromsky.com or use our contact form.

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