Comments (2)
Has this bug already been fixed? I'm also running into several errors.
from railroad.
Thanks for reporting this issue. The source of the error is that the algorithm failed to find the rail tracks. While in OpenCV3 there is no error in that case, in OpenCV2 an assertion fails upon writing a 0x0 size image.
We have made improvements on this and meanwhile switched to OpenCV4, so please try it again with a higher OpenCV version.
Of course, the real issue here is that the rail track was not found. I have 2 suggestions for that:
- Try to crop the railway and its close surroundings from the point cloud. Some terrain and vegetation nearby can be handled by the algorithm, but larger areas could "mislead" the algorithm and in the end no rail track is found.
- To avoid manual preprocessing of the data in such way, we have implemented a combined cable and rail track segmentation approach, by first locating the overhead cables and automatically cropping the point cloud based on its position, so the rail tracks can be found with much better results. This was implemented in cc18442. See the Usage Guide as a reference on how to use it.
from railroad.
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from railroad.