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One possible solution is to add a new field to the pcl::PointCloud datatype (that is, create a custom point type in PCL). There is a tutorial on how to do this on the PCL website: http://pointclouds.org/documentation/tutorials/adding_custom_ptype.php

Then, you would simply publish this new pointcloud with an additional custom label field.

This is a very openCV kinda question, I suggest you look at the very well written documentation given in the wiki http://opencv.willowgarage.com/documentation/cpp/index.html. Pay special attention to the Mat data structure.

Hello,

I'm currently using kinect to receive image message and pointcloud2 message and make a depth and image with message information.

Then,I want to do some classification and label each pointcloud data and send back as ros message.

when I send back this pointcloud data that has label for each point as message.

How should I have this label information??

Thank you

Min

Hello,

I have question about open cv's mat class's format.

What I want to do is if there's RGB image, then, technically there are three matrixes.

Then, I want to get this RGB data array.

I found that mat has a pointer to data.

Then, how should I make an array of this RGB data from data pointer?

is it just make a new pointer

double* array; memcpy(array, dataPoint, sizeofimage*double);??

If not, any advices?

Thank you

Hello,

I'm trying to get image information from Image message and make a image data.

I found that there is some guideline to do this by using open cv.

However, I want to create image class defined by myself, which takes image data like matrix format.

I found that message has uint8_t data. how should I convert to image data to double??

Am I understanding image.h header file correctly?

If not, can you give me some comments?

Thanks

Hello, I am a beginner to ros.

What I want to do first with ros is getting picture and its depth information from kinect and store it to my computer to do some image processing.

I just install diamond base ros and follow the instruction for installing openni_kinect stack.

Then, if I do rosmake openni_camera and

roslaunch openni_camera openni_node.launch

it says

I don't know how to solve this problem.

Can you help this?

Thank you