EuclideanClustering crashes with cluster_filter=1

[Affonso-Gui]

    <node name="detic_euclidean_clustering"
          pkg="jsk_pcl_ros" type="euclidean_clustering"
          clear_params="true">
      <remap from="~input" to="depth_registered/points"/>
      <remap from="~input/cluster_indices" to="detic_segmentor/indices"/>
      <rosparam>
        multi: true
        tolerance: 0.03
        min_size: 10
        downsample_enable: true
        cluster_filter: 1
        approximate_sync: true
        queue_size: 100
      </rosparam>
    </node>

Sometimes fails at EuclideanClustering::clusteringClusterIndices with:

terminate called after throwing an instance of 'std::out_of_range'
        what():  vector::_M_range_check: __n (which is 0) >= this->size() (which is 0)
[docker/detic_euclidean_clustering-1] killing on exit

I still haven't been able to dive on this.

[nakane11]

I haven't run it, but this error seems to occur here.

jsk_recognition/jsk_pcl_ros/src/euclidean_cluster_extraction_nodelet.cpp

Line 207 in 7e6b704

result_point_indices.indices = output_indices.at(index).indices;

If cluster_filter: 1 and output_indices.size() is 0, examine_indices.size() is set to 1.

jsk_recognition/jsk_pcl_ros/src/euclidean_cluster_extraction_nodelet.cpp

Lines 195 to 202 in 7e6b704

	int index = 0;
	for(size_t i=0; i < output_indices.size(); i++){
	if(output_indices[i].indices.size() > size){
	size = output_indices[i].indices.size();
	index = i;
	}
	}
	examine_indices.push_back(index);