anilmullapudi's profile - activity

I want use face_detector package. To use this package in simulation, i need to create the faces or actors in the gazebo simulator. Can anyone please help where can i find the actor models for ROS indigo with Gazebo2.2 version.

Or is there any better way to detect and track the faces using face_detector without actor models?

I am trying to transform a point from a map frame to camera frame. But i was getting an AttributeError. I followed this api and wrote the following code.

target = "wide_stereo_optical_frame";
point = PointStamped()
point.point.x =2;
point.point.y = 1;
point.point.z = 1;
point.header.frame_id = "map";
point.header.stamp = rospy.Time.now();                                                              tf = tf.TransformListener();                                                                        tf.waitForTransform(target, point.header.frame_id, rospy.Time(), rospy.Duration(5.0));
camera_target = tf.transformPoint(target, point)

In the above code, i was created a point in "map" frame and trying to transform into "wide_stereo_optical_frame" frame. But, I was getting an error tf.Exception: AttributeError: 'TransformListener' object has no attribute 'Exception'

I have created a project from terminal and i was able to run successfully. When try to configure eclipse for the same project, but the project is not visible in eclipse. Hence, i am not able open and run my project in eclipse.

here is the steps i followed.

cd path/to/catkin/workspace

catkin_make --force-cmake -G"Eclipse CDT4 - Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug -DCMAKE_ECLIPSE_MAKE_ARGUMENTS=-j8

After running the above command, .project and .cproject files are created in the <catkin_workspace>/build directory. then i tried to import my project Click File -> Import -> Existing Projects into Workspace (Next) -> Browse (browse to catkin_workspace -> My project is not visible here :-( ,

i noticed my project is not appearing in the .project file. why my project is missing in .project and how can i open it in eclipse. Can anyone please help me on this?

I need a time while running the simulation, but in my code returns zero time.

print rospy.get_time(); #output 0

print rospy.Time.now(); #output 0.0

but i see the time in terminal when i run rostopic echo /clock

Am i doing anything wrong while reading time?

I am trying to transform a point from a base_link frame to camera frame. When run the below code getting error message "Exception: Lookup would require extrapolation into the future. canTransform returned after 4.003 timeout was 4.Requested time 1466110388.818536997 but the latest data is at time 3101.240000000, when looking up transform from frame [base_link] to frame [wide_stereo_optical_frame]. target = "wide_stereo_optical_frame";
point = PointStamped()
point.point.x =2;
point.point.y = 1;
point.point.z = 1;
point.header.frame_id = "base_link";
point.header.stamp = rospy.Time.now();
tl_ = tf.TransformListener();
tl_.waitForTransform(target, point.header.frame_id, rospy.Time.now(), rospy.Duration(5.0));
camera_target = tf.transformPoint(target, point)

botf base_link and wide_stereo_optical_frame frames are available in tf database. I verified the in the terminal like this
rosrun tf tf_echo /base_link /wide_stereo_optical_frame

I am using ros indigo and kinect xbox.
When i run the "rosrun openni_tracker openni_tracker", i was getting error InitFromXml failed: Can't create any node of the requested type!
I followed the suggestion provided from this link1 and link2

Here is the sequence of commands that i followed. I have installed sudo apt-get install ros-indigo-freenect-stack and NITE-Bin-Dev-Linux-x64-v1.5.2.23

roslaunch freenect_launch freenect.launch &
roslaunch pr2_LookAround_pkg face_detector.rgbd.launch &
rosrun rviz rviz

I tried by adding license sudo niLicense -l 0KOIk2JeIBYClPWVnMoRKn5cdY4= , but no luck.

I was publishing a frame using launch file.

I was getting below errors. tf2.waitForTransform(src_fram, des_frame, rospy.get_rostime(), rospy.Duration(10.0)); Exception: Lookup would require extrapolation into the future. Requested time 1468340743.794792891 but the latest data is at time 2117.120000000, when looking up transform from frame [bed_frame] to frame [wide_stereo_optical_frame]. canTransform returned after 10.0004 timeout was 10.

I have used all time combinations such as rspy.Time(), rospy.get_rostime(), and rospy.Time.now(). but no luck. i also used sleep function for 10 seconds before waitForTransform, this is also not worked

here is my code

def getTransformedPoint(faceCoordinate, src_fram, des_frame):
point = PointStamped()
point.point.x = faceCoordinate[0];
point.point.y = faceCoordinate[1];
point.point.z = faceCoordinate[2];
point.header.frame_id = src_fram;
point.header.stamp = rospy.Time();
print "rospy.Time(): ",point.header.stamp;
print "rospy.get_rostime(): ",rospy.get_rostime();
print "rospy.Time.now(): ", rospy.Time.now();

tf2.waitForTransform(src_fram, des_frame, rospy.Time(), rospy.Duration(10.0));

desired_frame = tf2.transformPoint(des_frame, point)
print desired_frame

I was able to get face position(x,y,z co-ordinates) using face_detector package. is there anyway to get orientation as well.

I was getting face position using stereo and Kinect cameras.

yes, it was recently upgraded. Thanks for the reference link.

i am using face_detector package. when i try to launch the face_detector_action.wide.launch , the process is dead without giving any error.

[face_detector-1] process has died [pid 9268, exit code -11, cmd /home/pr2admin/catkin_ws/devel/lib/face_detector/face_detector camera:=wide_stereo image:=image_rect __name:=face_detector __log:=/home/pr2admin/.ros/log/ac31f6bc-6a3a-11e6-8196-d05099960e3c/face_detector-1.log].log file: /home/pr2admin/.ros/log/ac31f6bc-6a3a-11e6-8196-d05099960e3c/face_detector-1*.log  all processes on machine have died, roslaunch will exit shutting down. processing monitor...... shutting down processing monitor complete

I tried to open the log file and check, but log file is not exist in that location. What could be the possible failures of face_detector may fail? I was able to see topics and images in rviz.

When i try to install the ar_track_alvar using sudo apt-get install ros-indigo-ar-track-alvar
I was getting the following error.

Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ros-indigo-ar-track-alvar

I also tried using synaptic tool which is alternative to apt-get install. But i was not able to find indigo related alvar packages

Can anyone please help me on this?

I followed 1.2 and 1.3 from this link http://wiki.ros.org/indigo/Installati... and sudo apt-get update

above steps worked for me, now i was able to install

Thank you so much for your support, i re-installed the ros indigo keys. i was able to install the ar_track_alvar now.

ROS was installed through apt-get
rosversion -d
indigo