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Waymo Open Dataset
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Differences in image exposure #392

Open zgojcic opened 2 years ago

zgojcic commented 2 years ago

Hi,

I have observed that there are large differences in the image exposure even for the same camera within one sequence. For example, in the sequence 10275144660749673822_5755_561_5775_561 the following two images come from the ront right camera

0010 0041

Looking at their exposure (img.camera_readout_done_time - img.camera_trigger_time) the difference is quite small though 0.04493 to 0.04587.

Is the camera exposure adapted on the fly, or do you run some post-processing on the images? If the former, would it be possible to get any additional metadata? and if the latter, would it be possible to get the raw images

Thank you Zan

yifanlu0227 commented 9 months ago

I don't think (img.camera_readout_done_time - img.camera_trigger_time) is the exposure time for each pixel. There is another attribute img.shutter.