laser_filters/LaserArrayFilter Bug

ros-perception / laser_filters

Assorted filters designed to operate on 2D planar laser scanners, which use the sensor_msgs/LaserScan type.

BSD 3-Clause "New" or "Revised" License

173 stars 204 forks source link

laser_filters/LaserArrayFilter Bug #54

Open spuetz opened 7 years ago

spuetz commented 7 years ago

Defining only the param range_filter_chain causes an error: "process has died!" Right now you need both: range_filter_chain, intensity_filter_chain.

Using the MedianFilterFloat and not MultiChannelMedianFilterFloat is also not possible. Couldn't find filter of type filters/MedianFilterFloat. MultiChannelMedianFilterFloat is working.

jonbinney commented 7 years ago

What version of ros are you on? What are you launching (text of config files would be useful). Are you using this package from source or from debs?

spuetz commented 7 years ago

We use kinetic, with the Debian package. For example, the following config (without intensity_filter_chain) does not work:

scan_filter_chain:
- type: laser_filters/LaserArrayFilter
  name: laser_median_filter
  params: 
    range_filter_chain:
      - name: median_5
        type: filters/MultiChannelMedianFilterFloat 
        params:
          number_of_observations: 5

jonbinney commented 7 years ago

I haven't been able to reproduce your problem yet. Does it crash immediately, or only when you receive laser scans? Any chance you can provide a gdb backtrace? Are there any errors other than "process has died!"? Can you copy/paste the entire terminal output?