Known Issues

Please also have a look at the FAQ, there might be a solution to your issue there. We encourage you to contribute to this repository if you have a solution to these issues:

ROS-free mode

The ROS-free launch of maplab (using the -ros_free flag) is currently not working.

Building with unstable internet connection

Building maplab will download and check-out dependencies, which can be very slow depending on the speed of you internet connection. A more detailed answer can be found in the FAQ.

Console crash when using gflags the wrong way

The console will crash if gflags (except bool gflags) are provided with no argument, e.g. load --map_folder rather than load --map_folder my_folder.

Using newer GCC versions

We observed that with higher GCC versions there can be build errors or even segfaults. E.g. this issue https://github.com/ethz-asl/maplab/issues/30. Try compiling with the default Ubuntu 14.04/16.04 versions of GCC, these are being tested by our build server.

Passing color images to ROVIOLI -> very sparse VIMaps (low number of vertices)

ROVIOLI seems to produce extremely sparse (in terms of number of vertices) maps if a color camera is passed in as a tracking camera. We assume the color image is being corrupted or misinterpreted by our feature tracker or it is simply to large to get successful feature tracks. If you encounter this issue try converting the images to grayscale images first. We would be interested to hear if that solved the problem or if additional changes were necessary.

Related Issues: #49