Hi,
Does anyone know how to access depth sensor in RGBD camera using OpenCV, such as streaming or 3d reconstruction or point cloud. I am new to the field and do not understand many things, so bear with me. so far I have been using camera's SDK, but I have reached at a stage where using that may not be possible.any help will be greatly appreciated. thanks in advance! SumitM
If you have compiled OpenCV with OpenNI, and the RGBD camera which you use is supported (i.e. Kinect/Asus), then you can use the cv::VideoCapture class to obtain RGBD data.
For example:
cv::VideoCapture videoReader;
videoReader.open( CV_CAP_OPENNI );
//Set capture to 640x480 images at 30Hz
videoReader.set( CV_CAP_OPENNI_IMAGE_GENERATOR_OUTPUT_MODE, CV_CAP_OPENNI_VGA_30HZ );
//Grabs current frame
videoReader.grab();
//retrieves RGB,Depth and mask data
cv::Mat rgbImg,dptImg,mskImg;
videoReader.retrieve(rgbImg,CV_CAP_OPENNI_BGR_IMAGE );
videoReader.retrieve(dptImg,CV_CAP_OPENNI_DEPTH_MAP);
videoReader.retrieve(mskImg,CV_CAP_OPENNI_VALID_DEPTH_MASK);
See the openni example in the examples folder that come with OpenCV source code.
Which camera are you using? If it's a kinect or Asus sensor, the easiest way would be to use the pcl: http://pointclouds.org/documentation/tutorials/openni_grabber.php
Why can't you use the sdk and which sdk have you been using?
I have depthsense cameras and the same SDK. The problem is when I have to create disparity image for two color sensors, it cant be done real time, only way is to save images and process it later......I hope that explains my situation.........I desperately need any help I can get.......
I cant not read depth sensor data using OpenCV. SDK allows me to stream through RGB and D data. But if I am going for disparity map using color cameras and to combine this depth sensor data, but it does not work in SDK. That's why I need some other method where I can access depth sensor data and color data as well as switch streaming to one another as per requirement for my work. So for that I need some method to open depth sensor stream such as using OpenCV or something like that. Does that explain my situation?
Asked: 2014-10-10 16:18:40 -0600
Seen: 1,778 times
Last updated: Oct 14 '14
