title: How to Combine and Display depth and rgb image using Kinect and opencv
body: <p>WE are doing a project using kinect and opencv. I am completely new to 3D analysis. Main aim is to take the depth and rgb information from kinect,process the rgb mat ( basic filtering and threshold functions) and combine the processed rgb image with the original depth information. i need basic steps to follow with suitable applications to use ( opencv,opengl,openni,kinect sdk etc)</p>
  
  <p>1) how to pass the depth and rgb information from kinect to opencv?</p>
  
  <p>2) can we individually access the rgb image to process it?</p>
  
  <p>3) how to combine the two and what functions to use to display the output?</p>
  
  <p>We are using windows-64 bit and kinect as 3D sensor. We are planning to use OpenNI to get the image rgb and depth information and then process rgb in OpenCV and then display the Image (Processed RGB + depth) in a window with help of OpenGL.</p>