Ask Your Question

userRCH's profile - activity

2020-07-04 12:28:29 -0500 received badge  Famous Question (source)
2020-02-18 06:43:16 -0500 received badge  Famous Question (source)
2020-02-18 06:43:16 -0500 received badge  Notable Question (source)
2020-02-18 06:43:16 -0500 received badge  Popular Question (source)
2020-02-17 09:04:11 -0500 received badge  Taxonomist
2019-12-05 15:04:48 -0500 received badge  Student (source)
2017-02-05 11:56:04 -0500 asked a question Why java-rosbridge is not receiving all the messages?

Hi! I'm using a ROS node that publishes ros images in this format http://docs.ros.org/api/sensor_msgs/h... . I'm using java-rosbridge to collect these messages in java program. However, I noticed that some messages are lost. Do you have any idea why messages are lost? I'm using ROStest.java (available in the package of java_rosbridge) to read published messages.

2017-02-05 11:40:22 -0500 answered a question Not received published messages via rosbridge TCP server

Did you find a solution to your problem because I'm facing the same problem.

2017-01-25 09:18:44 -0500 received badge  Notable Question (source)
2016-11-26 01:51:25 -0500 received badge  Popular Question (source)
2016-11-26 01:51:25 -0500 received badge  Notable Question (source)
2016-11-26 01:51:25 -0500 received badge  Famous Question (source)
2016-10-31 06:05:52 -0500 received badge  Popular Question (source)
2016-08-13 05:22:48 -0500 received badge  Enthusiast
2016-08-02 18:47:30 -0500 asked a question how images are encoded in rosbridge?

Hi! I need to send date collected from robots to a server for task computation offloading. For that, I'm using rosbridge to send Images from robots to an opencv program running on a remote server. The data I'm receiving on the server is a string in Base64 (because rosbridge encode images in Base64). The problem is when I convert this string to opencv:Mat, I get an empty matrix. I use this code to convert the string encoded in Base 64 to an opencv:Mat:

byte[] decoded=Base64.getMimeDecoder().decode(image); MatOfByte matrix=new MatOfByte(decoded); Mat outputImage = Highgui.imdecode(matrix, Highgui.CV_LOAD_IMAGE_COLOR);

I would like to know how rosbridge is encoding images? Is these another way to decode rosbridge images? thank you in advance!

2016-03-21 09:27:27 -0500 asked a question rosbridge web

Hi! I'm using rosbridge to connect ROS to a remote program. I have opened a connection to rosbrigde using this address "ws://localhost:9090". Later in my code, I have opened another websocket connection (to exchage message between ros and a server using apache kafka) using this address"127.0.0.1:9092". When I open this second websocket connection, I loose the rosbridge connection and I get this exception "Connection closed: 1008 - WebSocketException". Please is there a solution to this problem? thak you in advance!