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duguyue100 avatar duguyue100 commented on July 16, 2024

Hi, @Ginobili-20,

Recording the frame and timestamp is supported in the option --davis_output, you can check it here: https://github.com/SensorsINI/v2e/blob/master/v2ecore/v2e_args.py#L350

This option also records the corresponding event index for the respective frame.

However, when writing the frames, it makes the event emulation slow because of constant frame writing to the disk.

The following code is when the emulator wrote frame timestamps:

v2e/v2ecore/emulator.py

Lines 195 to 201 in 6991adb

frame_ts_arr = np.array(frame_ts, dtype=np.float32)*1e6
self.frame_ts_dataset = self.dvs_h5.create_dataset(
name="frame_ts",
shape=(n_frames,),
data=frame_ts_arr.astype(np.uint32),
dtype="uint32",
compression="gzip")

If you only care about frame timestamps, maybe the most convenient way, for now, is saving the variable interpTimes before this line: https://github.com/SensorsINI/v2e/blob/master/v2e.py#L732

write one or two lines to save the timestamps into a npy file and you are good to go.

Regards,
Yuhuang.

from v2e.

HaoDot avatar HaoDot commented on July 16, 2024

Wonderful and detailed solutions!!! THX for your immediate reply!!!
Best Wishes

from v2e.

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