EVT2 RAW File decoder
The sample metavision_evt2_raw_file_decoder.cpp demonstrates how to decode an EVT2 format RAW file
and write the decoded events in a CSV file.
Unlike C++ metavision_file_to_csv and Python metavision_file_to_csv samples, this decoder is not leveraging the SDK API (hence “standalone”) so it can be integrated more easily in other projects if needed.
The source code of this sample can be found in <install-prefix>/share/metavision/samples/metavision_evt2_raw_file_decoder
when installing Metavision SDK from installer or packages. For other deployment methods, check the page
Path of Samples.
Expected Output
The sample creates two CSV files from the RAW file:
The CD events CSV file with the format
x;y;polarity;timestampThe External Trigger Events output CSV file (if any) with the format
value;id;timestamp
Note
As this decoder is not using the SDK API, the timestamp shifting feature is not used and raw timestamps are written in the output CSV file. Hence events found in the CSV files produced by those samples will not have the same timestamps as the one produced by our CSV converters (C++ CSV Converter and Python CSV converter).
How to start
First, compile the sample as described in this tutorial.
To start the sample, provide the full path to a RAW file (for example, a file from our Sample Recordings) and the path of the output CSV file:
Linux
metavision_evt2_raw_file_decoder /path/to/input.raw /path/to/output.csv
Windows
metavision_evt2_raw_file_decoder.exe \path\to\input.raw \path\to\output.csv
Optionally, you can also generate the CSV file containing the External Trigger Events:
Linux
metavision_evt2_raw_file_decoder /path/to/input.raw /path/to/output_cd.csv /path/to/output_external_triggers.csv
Windows
metavision_evt2_raw_file_decoder.exe \path\to\input.raw \path\to\output_cd.csv \path\to\output_external_triggers.csv