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2011-07-02 06:56:53 -0500 marked best answer depth wrong using openni_camera depth image

The depth image isn't (usually) what you want; you usually want the point cloud, which has units of meters.

The slow recording is trickier to diagnose; are there known issues with USB speeds on macbooks in Linux?

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2011-06-18 05:11:46 -0500 marked best answer openni kinect depth value

Hi, the value of 10000 is the maximum depth in millimeters. Thats not a software limit, but a limit given by the hardware. Also the value is somewhere given in the OpenNI/PS-Engine libraries. As "Mac" mentioned, the point clouds published by the node is already in meters in the corresponding coordinate frame.


2011-05-08 16:27:33 -0500 marked best answer kinect calibration parameter

While the point cloud is "calibrated", there is no internal mechanism in the driver to output rectified images. However, you can use image_proc to do this. This answers is about where to get the parameters.

2011-05-03 12:05:59 -0500 asked a question openni kinect depth value

I use the openni SimpleViewer, the depth value is 10000 max. Can somebody tell me what's the value stands for? Why it's not 2047 max ? I find that there is an SampleConfig.xml, how to configure my kinect?

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2011-04-19 11:44:28 -0500 asked a question kinect calibration parameter

When I use openni sample viewer to view the kinect images, I find that the depth can mapped on the color image. But I did not find the camera intrinsic and transfer parameters of the kinect. Can kinect provide calibrated images directly?

2011-04-19 08:09:39 -0500 marked best answer Depth value problem

Hi, the output depth image is a floatingpoint image containing the depth values in meters. So, what format did you use to save them and read them back? Did you maybe use gray scale images instead?


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2011-03-08 07:28:07 -0500 asked a question Depth value problem


I use rosbag to record the information from a kinect camera, then I export the depth image from the bag file, but the image pixel value seems wrong with just a few values like 0,1,2. I don't know why. Does anybody can help me?



2011-03-02 07:41:38 -0500 answered a question vslam eigen and compile_error

changed Eigen3 to Eigen in all the following files, freiburg_kinect-experimental/rgbdslam/manifest freiburg_kinect-experimental/rgbdslam/src/ node openni_listerer graph_manager

They have made changes recently.

2011-03-02 07:35:08 -0500 asked a question depth wrong using openni_camera depth image


I install ubuntu10.10 independently on my macbook pro. And ROS unstable with Openni_kinect. (I know the unstable is a little old, but I am sure it is not the reason.)

I could only get a very low frame rate when use a kinect camera, with the command of rosbag record -a, I find that the frame rate is just about 3fps. Even when I just record a single topic, the fps is still low, is about 8 fps, with a extremely big file.

I still have another problem that when I get the depth image with my kinect, I could only get a few depth value like 0,1,2,3,4,5.

Can you help me about this?

Regards Wei