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2017-08-24 14:20:26 -0500	marked best answer	running image_view with pointgrey flea3 camera Hello, I installed the driver for two Flea3 Pointgrey cameras whose accessibility are (successfully) verified via: rosrun pointgrey_camera_driver list_cameras 12062824 12062828 Now "starting" one of those cameras with roslaunch pointgrey_camera_driver camera.launch camera_serial:=12062824 I would like to display my images with rosrun image_view image_view image:=/camera/image but I receive the following error code: [ERROR] [1404221648.972130708]: Client [/image_view_1404220593387350082] wants topic /camera/image to have datatype/md5sum [sensor_msgs/Image/060021388200f6f0f447d0fcd9c64743], but our version has [wfov_camera_msgs/WFOVImage/807d0db423ab5e1561cfeba09a10bc88]. Dropping connection. [ERROR] [1404221696.898906591]: Client [/image_view_1404221696410391988] wants topic /camera/image to have datatype/md5sum [sensor_msgs/Image/060021388200f6f0f447d0fcd9c64743], but our version has [wfov_camera_msgs/WFOVImage/807d0db423ab5e1561cfeba09a10bc88]. Dropping connection. It seems like the camera.launch script publishes the images in a message format which is not known to image_view. As I am a beginner to Linux as well as ROS I would like to ask for some tips how to publish my images (or edit camera.launch) in a certain way, eg. under the topic "left_camera/image". Also how would I take a first step in displaying my images from the camera? Thank you!
2017-04-06 11:21:02 -0500	marked best answer	How to start creating a package/node in ROS? Hello, I started some weeks ago with ROS, now I want to write a node (or nodelet or package) for my stereo-camera-system (2 Point Grey Flea3 GigE-Cameras). The pointgrey-camera-driver for ROS doesnt let me handle things like the polarity of the trigger or setting a fixed IP. Basically my program already exists as a Visual Studio 2010 (yes, PointGrey doesnot support VS2012) project. The program checks the system for exisiting cameras and then sets them up with fixed IP's, enables a trigger, selects a ROI and so on. In the end the settings are stored to the cameras' memory channels where they persist. Basically I have the problem that I dont know with which ROS tutorial to start and whether I want to create an own ROS package or if it makes sense to define my program as a node/nodelet of the pointgrey-camera package. I think my node should not subscribe to any topics, it really is more of a c++ program working on its own. I have the compiled library files (eqivalent to windows dlls in Linux I guess) for the FlyCap SDK. So my idea is to put that node (if succesfully) into my launch file before starting the camera, ideally the node should return a boolean true/false on sucess/failure to the system. How can that be done? My supervisor told me for Linux there exists a good IDE called QtCreator, so far I have used VS and eclipse in Windows. Do you have any ideas/suggestions for me? ----UPDATE--- This is the code of my node "stereo_setup" in stereo_setup.cpp. What happens to lines like std::cout << "xyz" or printf(...) in ROS? I am still uncertain how to set the info that the camera_setup was successfull. #include <ros.h> #include<iostream> #include "FlyCapture2_Axel.h" using namespace std; using namespace FlyCapture2; const char * const mac_address_char_12062824 = "00:B0:9D:B8:10:68"; const char * const mac_address_char_12062828 = "00:B0:9D:B8:10:6C"; const char * const ip_address_char_12062824 = "192.168.1.2"; const char * const ip_address_char_12062828 = "192.168.1.3"; const char * const ip_address_char_submask = "255.255.0.0"; const char * const ip_address_char_gateway= "0.0.0.0"; const unsigned int SN_12062824 = 12062824; const unsigned int SN_12062828 = 12062828; const Mode k_fmt7Mode = MODE_0; const unsigned int image_width = 1344; const unsigned int image_height = 1032; const unsigned int MAX_image_width = 1384; const unsigned int MAX_image_height = 1032; const PixelFormat pixel_format = PIXEL_FORMAT_RGB; //turn shutter to manual mode const bool SHUTTER_MANUAL_MODE = false; //shutter duration in milliseconds const unsigned int SHUTTER_DURATION = 8; //turn on filewriting //const bool WRITE_TO_FILE = true; // File Format // File Format //const char * file_format = "bmp"; bool initialize_cameras(); bool connect_cameras(Camera * cam_12062824, Camera * cam_12062828, PGRGuid * pgr_guid_12062824, PGRGuid * pgr_guid_12062828); bool setup_cameras(Camera * cam_12062824, Camera * cam_12062828); void PrintBuildInfo(); void PrintError( Error error ); void PrintCameraInfo( CameraInfo* pCamInfo ); void PrintFormat7Capabilities( Format7Info fmt7Info); int main(int argc, char** argv ) { ros::init(argc, argv, "stereo_setup"); PrintBuildInfo(); Error error; //BusManager busmanager; Camera cam_12062824, cam_12062828; PGRGuid pgr_guid_12062824, pgr_guid_12062828; bool ini = initialize_cameras(); if(ini == false) { std::cout << "Could not successfully initialize the two cameras!" << std ... (more)
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2016-12-12 03:29:43 -0500	marked best answer	can "rosbag filter" create a new bag file with multiple topics within it? Hello, I have a bagfile with a lot of topics in it. For some reason I would like to filter out 4 topics of that bagfile into a new bagfile: `rosbag filter old_bag.bag new_bag.bag "topic=='/stereo/left/image_rect' '/stereo/right/image_rect' '/stereo/left/camera_info' '/stereo/right/camera_info'"` Unfortunately this doesn't work. Does anyone have a clue what the correct syntax is?
2016-09-08 13:37:09 -0500	marked best answer	How to create directories in a ROS launch file Hello, I would like to create a directory in a ROS launch file in order store images in the specified folder. How can this be done?
2016-06-13 12:28:10 -0500	marked best answer	catkin_make fails weirdly after trying to create a new package Hello, I am trying to build a new package in a catkin_workspace. After trying to build this package everything seems to be malfunctioning. E.g. if i delete the package under construction and only leave one surely working package in my catkin_ws (e.g. image_view, viso2_ros) i still get the following errors when doing catkin_make. ....... CMake Error at /opt/ros/hydro/share/catkin/cmake/catkinConfig.cmake:75 (find_package): Could not find a configuration file for package cv_bridge. Set cv_bridge_DIR to the directory containing a CMake configuration file for cv_bridge. The file will have one of the following names: cv_bridgeConfig.cmake cv_bridge-config.cmake Call Stack (most recent call first): viso2-hydro/viso2_ros/CMakeLists.txt:4 (find_package) CMake Error at /opt/ros/hydro/share/catkin/cmake/catkinConfig.cmake:75 (find_package): Could not find a configuration file for package image_geometry. Set image_geometry_DIR to the directory containing a CMake configuration file for image_geometry. The file will have one of the following names: image_geometryConfig.cmake image_geometry-config.cmake Call Stack (most recent call first): viso2-hydro/viso2_ros/CMakeLists.txt:4 (find_package) -- checking for module 'openni-dev' -- package 'openni-dev' not found -- checking for module 'openni-dev' -- package 'openni-dev' not found -- checking for module 'openni-dev' -- package 'openni-dev' not found -- looking for PCL_COMMON ........ What the f** has happened. Did my package under construction destroy anything? Sidenote: I am a beginner to ROS! Also here is my original CMakeLists.txt for my new package "stereo_setup": cmake_minimum_required(VERSION 2.8.3) project(stereo_setup) find_package(catkin REQUIRED) catkin_package( INCLUDE_DIRS include) # set include directories for headers and libraries include_directories($(stereo_setup_INCLUDE_DIRS), include, lib) FIND_LIBRARY(FLYCAP_SDK NAMES libflycapture.so library PATHS /lib) # set the executable for executing ROS cmds add_executable(stereo_setup_exe src/stereo_setup.cpp) #set the properties SET_TARGET_PROPERTIES(stereo_setup_exe PROPERTIES OUTPUT_NAME stereo_setup) # add the sourcecode as a "library" #add_library(stereo_setup src/stereo_setup.cpp) # target; link against target_link_libraries(stereo_setup ${FLYCAP_SDK}) target_link_libraries(stereo_setup ${catkin_LIBRARIES})