I have a rosbag file with sensor_msgs/PointCloud2 data. I want to extract a video from these data. All the ROS tools I found is related to the extraction of video from an Image topic. Is it possible to create a video directly from PointCloud2?
Or, is there a straightforward way to revert the PointCloud2 to the original image and depth topics?
Thanks to Martin Gunther I used the `convert_pointcloud_to_image` . But when I run image_view it crashes with this error:
> Using transport "raw"
OpenCV Error: Bad argument (Unknown array type) in cvarrToMat, file /build/buildd/opencv-2.4.8+dfsg1/modules/core/src/matrix.cpp, line 698
terminate called after throwing an instance of 'cv::Exception'
what(): /build/buildd/opencv-2.4.8+dfsg1/modules/core/src/matrix.cpp:698: error: (-5) Unknown array type in function cvarrToMat
If I echo the image topic I can see the data, the header is:
header:
seq: 1934
stamp:
secs: 0
nsecs: 0
frame_id: ''
height: 1
width: 289946
encoding: bgr8
is_bigendian: 0
step: 869838
What is the problem with this data?
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