id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
24294	Use heading from NMEA when available to set picture direction	Eric_S	StephaneP	"When correlating images with GPX track, one can ask to use GPX track to set image direction (''Set Image direction towards the next GPX waypoint''). Indeed, such direction can be provided by the GNSS chip itself, for instance when used with an Inertial measurement unit (IMU). I'm using a ublox F9R which combine a RTK GNSS receiver with an IMU. Heading is outed in several NMEA sentences (RMC, VTG and THS). By using such data, one can set the right direction when driving backward but, more importantly, avoid random directions when being stationary (at traffic lights). Extreme case, my camera was 2 m in front of the GNSS antenna. I indicated this in JOSM while doing the correlation. Pictures were placed on a 2 m radius circle around the GPS point when waiting at traffic lights.


{{{
$GNRMC,074949.50,A,4511.1929356,N,00544.6631314,E,0.001,**292.66**,270724,2.32,E,R,V*4C
$GNVTG,**292.66**,T,290.35,M,0.001,N,0.001,K,D*3C
$GNGGA,074949.50,4511.1929356,N,00544.6631314,E,4,12,0.67,217.148,M,47.399,M,1.0,0000*62
$GNGLL,4511.1929356,N,00544.6631314,E,074949.50,A,D*73
$GNTHS,**292.66**,A*10
}}}
"	enhancement	new	normal		Core image mapping