Open himynamesdave opened 9 months ago
How is speed calculated?
@fqrious here is an explanation (and implementation)
https://github.com/trek-view/gopro2frames/blob/main/docs/LOGIC.md#gps_speed_meters_second_next
Essentially you use the gps points between consecutive photos to calculate distance and time which will give you speed
Yes, it is described here
https://github.com/trek-view/gopro2frames/blob/main/docs/LOGIC.md#gps_distance_meters_next
you can see the implementation here:
closing, will raise individual tickets to cover
This needs more thought. Reopening, can tackle later
In some cases, GPS data is erroneous. e.g. the distance or speed between two consecutive points by time is clearly to fast (e.g. 10000 km/h speed)
There are many ways to get rid of outlying points like this:
https://gis.stackexchange.com/questions/19683/what-algorithm-should-i-use-to-remove-outliers-in-trace-data
User should be able to set an outlier "speed" in all modes
--outlier_speed_meters_sec
Default if not passed is 40 meters / second (144 km/h).
When user passes this flag, they can enter any whole number
When a destination photo has a speed greater than the specified outlier speed it will be removed (and logged) from the input photos considered to produce a video (similar logic to when photos in input have no GPS: https://github.com/trek-view/gopro2gsv#validation).
Is dependant on change #26 as this will mean videos are now first processed to images, at which point, outliers can be removed.