record time when a polarity changes at a pixel in capture stream (Davis346)

[Raymond Linn]

Hi, 

How can record the time that polarity of a pixel(x,y) changes in a particular grid (say 16x16) out of 320x240 resolution in capture stream from Davis 346.

Thanks

[Tobi Delbruck (INI)]

Davis346 has resolution 346x260 (not QVGA exactly).

Just take the address and right shift the x and y addresses by 4 bits.
That will subsample to 16x16 blocks, as in
https://github.com/SensorsINI/jaer/blob/master/src/net/sf/jaer/eventprocessing/filter/SubSampler.java