youga's profile - activity

Hello all, I am working on Robot Object Detection and Identification project. I am using kinect camera, ROS and Point Cloud Library for that. Well my questions are

1] Which kind of databases are more suited to store PCD files?

2] Do we have to interface ROS and PCL for processing of ICP algorithm.

thanks!

We generate point cloud (points2) using ros and now we want to store it into pcd file so as to use that file into standalone PCL. Is it possible to subscribe point-cloud through ROS and then further process it using standalone PCL??

its a very basic question but i tried to read everything n now m confused. "i am totally new at ros and pcl though". we are working with a project robot object detection and analysis. so far in our project we can subscribed to pointcloud. but the question is how to stored it in pcd file or is there any better solution for that?? and how to use pcl for that ??

any help would be appreciated! thank you

Hi all-

I know pcl::PointClouds carry color data packed as a float and it can be subscribe using sensor msg in ros. but What happens when this is saved in a binary .pcd file, and then converted to ascii? Any chance that the color data is still valid if I later read that ascii number in as a float?

Is there currently any good way to save the r, g, b, color info as separate values?

Thanks :)

Hello all, i am working on pobot object detection project and m totally new at Ros. so far in project we have published pointclouds but can anyone tell me after subscribing to a pointcloud2 message through ros, how to access its data field ( WHERE THE ACTUAL DATA IS STORED) ROS_INFO("I heard Height[%d] Width[%d] point_step[%d] row_step[%d] data[%d] ", msg->height, msg->width, msg->point_step, msg->row_step);

through this i can access height,width but what is the datatype for data field??

Hi, I'm working with ROS on object identification. but i don't know how your pointcloud node receives the sensor_msgs::PointCloud2 msg. and also how to use pcl::fromROSMsg function to convert it to pcl::PointCloud<pointt>

Hi all, i am trying to read .pcd file and view it through pcl_visualizer. do i have to write separate code for it or can i directly use some commands?? i tried pcd_viewer filename.pcd also, but its not working.