This repo contains basic functions to get you going quickly when dealing with event-based recordings, which are typically recorded with cameras such as the DVS or ATIS.
Depending on the recording, there are different properties of an event available. Currently supported are x, y, timestamp ts and polarity p for DVS events and is_threshold_crossing tc and delta_t properties for ATIS events, which encode grey-level values. Each event is added as a field to a structure array. In the following an example of a recording with 2 million events:
struct with fields:
ts: [1×2282307 double]
x: [1×2282307 double]
y: [1×2282307 double]
p: [1×2282307 double]
tc: [1×2282307 double]
delta_t: [1×2282307 double]supported formats are .es (the eventstream format) and .dat. In case your primary goal is to convert files, have a look at loris.
a simple viewer that accumulates the events for display purposes. Slow and not very pretty. Try to use better tools.
crop recordings in space (x,y) and time (ts).
add a new field to the recording that displays activity for all events given. By default it will split activity for On and Off events respectively. You may also choose the type of decay as 'exponential' (default) or 'linear'
sometimes it is necessary to convert a sparse event representation into one that is sampled regurlarly. Currently this works well with the activity, this could however be adapted to accumulate events for frames (boohh) etc.
useful if you have multiple streams of events such as in a grid. All events are sorted by timestamp.