We provide our implementation of PIX2NVS, a tool for converting pixel frames to brightness spike events as generated by neuromorphic vision sensors (e.g. DAVIS-240).
A full description of the operation of this tool can be found in our paper:
[1] Yin Bi, Yiannis Andreopoulos, ‘PIX2NVS: Parameterized Conversion of Pixel-domain Video Frames to Neuromorphic Vision Streams’ [C], IEEE International Conference on Image Processing (ICIP), Sept. 17-20, 2017, Beijing, China
If you use the code in this repository, please cite the paper above. This tool is provided under the [GNU General Public Use v3.0 license].
All dependencies are located in the source folder. To build from source, change your working directory to this repository's home folder and run:
g++ -o pix2nvs src/*.cpp # to build from source
./pix2nvs # to run using default parameters| Option | Description |
|---|---|
| -r or --reference | set to (1, 2, or 3) to specify one of the reference frame update methods. |
| -m or --maxevents | will specify the maximum number of events generated between two frames |
| -b or --blocksize | will set the block size for local inhibition |
| -a or --adaptive | will set the co-efficient shift for adaptive thresholding, set to (0) to disable |
The reference frame update option can be set to any of the following:
| r | Reference Frame Update Method |
|---|---|
| 1 | copy last frame from source |
| 2 | update reference frame using only generated events, with history decay |
| 3 | update reference frame using only generated events, without history decay |
To extract events from videos located in the input folder:
./pix2nvs -r 3 -a 0 -b 4All outputs will be located in the folder "Events". The output from PIX2VNS using these parameters is visualized in the following figure:
| Pixel Image | Emulated NVS Events |
|---|---|
 |
 |
For any questions or bug reports, please contact Yin Bi at [email protected] or Alhabib Abbas at [email protected].
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