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Updated Simulating events from a video (markdown)

supitalp 2019-09-16 14:57:45 +02:00
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Simulating-events-from-a-video.md

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In this tutorial, we will show how to use ESIM to simulate events from a given video.
[[https://github.com/uzh-rpg/rpg_esim/blob/master/event_camera_simulator/img/example_video_to_events.gif|alt=Example conversion from video to events]]
Left: simulated APS frames (including motion blur)
Right: simulated events with ESIM.
### WARNING
Simulating events from a video **will not work for any video**. The input video needs to have a sufficiently high framerate: the pixel displacement between successive images needs to be small (i.e. a few pixels at most).
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An overview of the conversion method is shown in the diagram below. First, we will extract the individual frames from the input video in a folder. Second, we will run ESIM, providing the image folder as an input to simulate events.
Finally, we will see how to visualize the simulated events using the `dvs_renderer` node.
[[https://github.com/uzh-rpg/rpg_esim/blob/master/event_camera_simulator/img/overview_video_to_events.png]]
[[https://github.com/uzh-rpg/rpg_esim/blob/master/event_camera_simulator/img/overview_video_to_events.png|alt=Overview of the methodology to convert a video to events]]
### (Optional) Download an example video