PointPoseExtractor

Calcute object pose compared to template.

Subscribing Topic

• /ImageFeature0D (posedetection_msgs::ImageFeature0D)

  Image, camera and tempalte feature information.

Publishing Topics

• /ObjectDetection (posedetection_msgs::ObjectDetection)

  Detected object pose with time stamp.

• /ObjectDetection_agg (posedetection_msgs::ObjectDetection)

  Detected object pose with time stamp.

• /object_pose (geometry_msgs::PoseStamped)

  Detected Object Pose.

• /debug_image (cv_bridge::CvImage)

  Output image for debug.

Parameters

• ~template_filename (str default: “/sample/opencv-logo2.png”)
• ~reprojection_threshold (float default: 3.0)
• ~distanceratio_threshold (float default: 0.49)
• ~error_threshold (float default: 50.0)
• ~theta_step (float default: 5.0)
• ~phi_step (float default: 5.0)
• ~viewer_window (bool default: true)
• ~window_name (str default: “sample1”)
• ~autosize (bool default: false)
• ~publish_null_object_detection (bool default: false)

Service

• /SetTemplate

  Used to add another template.

Sample

sample_point_pose_extractor.launch

<launch>
  <node name="nodelet_manager"
        pkg="nodelet" type="nodelet"
        args="manager" />
  <node name="imagesift"
        pkg="nodelet" type="nodelet"
        args="load imagesift/ImageSift nodelet_manager">
    <remap from="image" to="<rgb camera image topic name>"/>
    <remap from="camera_info" to="<rgb camera info topic name>" />
  </node>
  <node name="point_pose_extractor" pkg="jsk_perception" type="point_pose_extractor"
        respawn="true" output="screen"/>
</launch>

roslaunch sample_point_pose_extractor.launch  
rostopic echo /ObjectDetection

Example of how to run set_template service

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import cv2

import cv_bridge
import rospy
from jsk_perception.srv import SetTemplate, SetTemplateRequest

rospy.init_node('point_pose_extractor_sample')

client = rospy.ServiceProxy('SetTemplate', SetTemplate)
rospy.sleep(1)

req= SetTemplateRequest()

im = cv2.imread('../../sample/ros_diamondback.jpg')
bridge = cv_bridge.CvBridge()
imgmsg = bridge.cv2_to_imgmsg(im, encoding='bgr8')
imgmsg.header.frame_id = 'dummy_camera'
imgmsg.header.stamp = rospy.Time.now()

req.type = 'img0001'
req.image = imgmsg
req.dimx = 0.1
req.dimy = 0.05
req.savefilename = 'img0001.png'
res = client.call(req)
print(res)