We just started the project here about a week ago. We are using a go pro max2 360 video at 4k probably driving around 20-30mph. When we upload the video and it converts them to images. The images look grainy and our street signs aren’t being identified on top of our poles. I see some posts about switching to photos. Would this be the recommendation over video for higher quality?
Thanks for your report. Mapillary works with images, not videos; that’s why the video is sliced and converted to images. We don’t keep videos on our side. At the same time, images shouldn’t be grainy. If you share your captures (e.g. Mapillary link), we can verify why road signs are not being identified and whether the images look reasonable (or are too grainy).
__
BR, Yaro
Any help would be appreciated. I’m just trying to figure out if we pump it up to 8k or go for still images if the 4k isnt grabbing a high enough resolution for the AI to differentiate.
I get the impression the detection is working for your example;
It does however appear that the camera focus is being affected by the vehicle body. ie compare the inside tailgate with distant trees. Could also be vibration?
I randomly selected a handful of sequences for a check, and it looks like the detections are there. Maybe the issue was the processing and propagation delay, as it takes 24h at best and up to 72h (sometimes more) for data to be propagated. Alternatively, please share an image where the detection didn’t work.
Regarding 4K vs 8K, I would say 8K is better. The images are 360, and 8K is the default for Max 2, so I would suggest using it if possible.
__
BR, Yaro
1 Like
We bumped it all the way to 8k now.
this was 8k and its still not picking up street name signs.
Per someone else, we move the gopro to the front of the top of the cabin. To get a better quality video/frames on the front side.
Street name signs not regulatory traffic signs? I don’t think I have ever seen these and they are not in the GUI pulldown list, apart from “Signage Information” in points.
Traffic signs seem to be working fine though.
they show up in this map.
Well that’s new to me. Impressive. The downside is that there is no graphic widget representation on the map. The example is also a bit old (2019) I am pretty sure that I have never seen them with my 4K images but the road signs here are more black on white.
@yaro would you please chime in here? Are street name signs detected? If so why no widget? It’s also worth pointing out that some (many) of my older captures have not detected very clear traffic signs. eg
(The detects in view are the opposite direction)
Cheers
@bob3bob3 for the shared image, this image was captured a long time ago (2020) and it either didn’t go through processing then for some reason or just an algorithmical mistake of older days. It is not clear now; there are simply no traces of events from those days. More general, the sign is not on the map at all because there are also no other sequences capturing in this direction, so no one else could contribute to the sign detection.
@GIStrophyclub mentioned two signs above a stop sign were recognized but were not classified, because Mapillary doesn’t classify signs for street names (to my best knowledge). At the same time this one was classified as a directional sign, which you usually see on highways. So, in general, it was mistakenly classified (misclassified).
__
BR, Yaro