[ros-users] Can not send kinect recorded bag to image_view

[Chris Brown]

Eric,

I'm republishing because I want process the data into a point cloud data,
which I have no idea how to do, where should I start?
I dont have a kinect to play with. To fix it I had to make this change

-pub.publish(Image(msg))
+pub.publish(msg)

works now


On Sat, Dec 4, 2010 at 12:20 PM, Eric Perko <wisesage5001 at gmail.com> wrote:

> Chris,
>
> To just playback a bagfile to a rosnode such as image_view, there is no
> need to write a script that uses the rosbag API. Take a look at this
> tutorial:
> http://www.ros.org/wiki/rosbag/Tutorials/Recording%20and%20playing%20back%20data
>
>
> <http://www.ros.org/wiki/rosbag/Tutorials/Recording%20and%20playing%20back%20data>For
> your specific case, you would want to use the following two commands (or
> something very close to them) after starting a roscore:
>
> 1. rosbag play /home/chris/bagfiles/kinectDepthVideo.bag
> 2. rosrun image_view image_view image:=/kinect/depth/image_raw
>
> That should be about all you need to do, no need to read from the bagfile
> using Python and then republish messages yourself.
>
> - Eric
>
> On Fri, Dec 3, 2010 at 7:00 PM, Chris Brown <chrisneilbrown at gmail.com>wrote:
>
>> I get this error
>>
>>   File "/home/chris/ros/ros/core/roslib/src/roslib/message.py", line 301,
>> in __init__
>>     raise TypeError, "Invalid number of arguments, args should be
>> %s"%str(self.__slots__)+" args are"+str(args)
>> TypeError: Invalid number of arguments, args should be ['header',
>> 'height', 'width', 'encoding', 'is_bigendian', 'step', 'data'] args
>> are(header:
>>   seq: 0
>>   stamp:
>>     secs: 1290467094
>>     nsecs: 328996057
>>   frame_id: /kinect_depth
>> height: 480
>> width: 640
>> encoding: mono8
>> is_bigendian: 0
>> step: 640
>> data:
>> ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿýýÿýÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿýýÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿýÿùùÿÿùõýõÿÿýýÿÿÿÿÿýùùõùùùùùùùùÿÿÿÿýÿýýùùùùýÿÿÿÿÿýýùùùùùùùýýýýýùõõõõõùõùùùùõõõõõùùõõõõõõõõõõõõõõõõõõññõññññññññññññññññññõñññññññíññññññññññõõõõÿÿÿÿÿÿÿÿÿõõñññíííééééñññññññññññññíññññññññííííí
>>
>> I'm sure I'm trying to publish send_msg/Image data to image_view which
>> accepts the data
>>
>> rosbag info ~/bagfiles/kinectDepthVideo.bag
>> path:        /home/chris/bagfiles/kinectDepthVideo.bag
>> version:     2.0
>> duration:    25.1s
>> start:       Nov 23 2010 10:04:54.33 (1290467094.33)
>> end:         Nov 23 2010 10:05:19.43 (1290467119.43)
>> size:        220.7 MB
>> messages:    753
>> compression: none [251/251 chunks]
>> types:       sensor_msgs/Image [060021388200f6f0f447d0fcd9c64743]
>> topics:      /kinect/depth/image_raw   753 msgs @ 29.8 Hz :
>> sensor_msgs/Image
>>
>>
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>>
>
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-- 
Chris
Aluminium Replacement Parts <http://arp.chrisb.id.au/>
@arpartsau <http://twitter.com/arpartsau>
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