Not getting topic in /tabletop_segmentation_markers

edit

Im trying to get the segmentation part of the tabletop_object_detector stack to work. To do this I launched the tabletop_segmentation.launch and changed the params in it as seen in this question http://answers.ros.org/question/63378/tabletop_segmentation-in-rviz/ But the difference is that my Kinect does not give a /camera/depth_registered/points topic but a /camera/depth/points, both being a message type pointcloud2 But when I either rostopic echo tabletop_segmentation_markers or try to see it in rviz with segmentationObject I get either no response or a empty topic.

right now im working with a kinect in fuerte and to obtain the point cloud i used the openni camera deprecated stack, I would really appreciate any help.

My tabletop_segmentation.launch is:

<launch>

<arg name="tabletop_segmentation_points_in" default="/camera/depth_registered/points" />
<arg name="tabletop_segmentation_convert_to_base_link" default="false" />
<arg name="tabletop_segmentation_clustering_voxel_size" default="0.003" />
<arg name="flatten_table" default="false"/>
<arg name="table_padding" default="0.02"/>

<node pkg="tabletop_object_detector" name="tabletop_segmentation" type="tabletop_segmentation" respawn="true" output="screen">
<!--topic remapping-->
    <remap from="cloud_in" to="$(arg tabletop_segmentation_points_in)" />
    <remap from="segmentation_srv" to="tabletop_segmentation" />
    <remap from="markers_out" to="tabletop_segmentation_markers" />

<param name="clustering_voxel_size" value="$(arg tabletop_segmentation_clustering_voxel_size)" />
<param name="inlier_threshold" value="300" />
<param name="plane_detection_voxel_size" value="0.01" />
<param name="cluster_distance" value="0.03" />
<param name="min_cluster_size" value="300" />
<param name="flatten_table" value="$(arg flatten_table)" />
<param name="table_padding" value="$(arg table_padding)" />

<!-- processing and filtering frame -->
<!-- all clouds converted to and processed in base link frame -->
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="processing_frame" value="base_link" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="up_direction" value="1.0" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="z_filter_min" value="0.35" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="z_filter_max" value="1.0" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="y_filter_min" value="-1.2" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="y_filter_max" value="1.2" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="x_filter_min" value="0.3" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="x_filter_max" value="1.0" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="table_z_filter_min" value="-0.5" />
<param if="$(arg tabletop_segmentation_convert_to_base_link)" name="table_z_filter_max" value="-0.01" />        

<!-- all clouds will be processed in the incoming frame, which is -->
<!-- assumed to the the camera's optical frame -->
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="processing_frame" value="" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="up_direction" value="-1.0" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="z_filter_min" value="0.4" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="z_filter_max" value="1.25" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="y_filter_min" value="-1.2" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="y_filter_max" value="1.2" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="x_filter_min" value="-1.2" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="x_filter_max" value="1.2" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="table_z_filter_min" value="0.01" />
<param unless="$(arg tabletop_segmentation_convert_to_base_link)" name="table_z_filter_max" value="0.5" />          

</node>

</launch>