I’m curious to know how you prefer to record Mapillary while on two wheels. Currently, I mount an action camera on my helmet using a chin mount. During my dirt bike rides, I capture several hours of footage at an acceptable resolution.
Previously, I used a remote control on my gear lever for taking photos, but it was inconvenient and risky on narrow trails.
Afterward, I review the footage, capture consecutive screenshots with VLC software, and use a script to set the photo time based on the filename. For geotagging, I rely on HoudahGeo3 software and reference the trip GPX file.
Processing takes about an hour, and my Mapillary uploads become available in iD after a few days. However, I find my current setup complex and would appreciate any suggestions to streamline and improve the process’s efficiency.
I have my GoPro Hero Session (has no GPS) mounted below the handlebar.
It takes an image every second.
The first images show the display of the GPS device - time and date.
GPX is recorded by a Garmin etrex 30.
Images and GPX are copied to PC.
A script using exiftool puts the lat/lon into the images, comparing time and date of images (exif data) plus time and date on first images (as offset) with timestamps of GPX file.
Nice setup! Have you had any problems with stabilization and blurry pictures? I’ve found that hand-picking certain frames in a video helps me avoid the blurry ones, but it takes quite a bit of time.
Yes, some of the images are blurry, exposure time is too long, … all the things which happen when the camera is in motion, tilt, …
It’s quite easy to ignore the pictures in JOSM while stepping through the list. I don’t make any attempts to find, filter, manipulate or delete those pictures.
“image per second” is a compromise between high resolution pictures and missing details when riding quite fast (image: you can’t read the details on the sign, next image: you’ve already passed the sign)