Object detection using OpenCV and CVBlob on Ubuntu HD

This is just a part of the distance measurement and object detection using OpenCV project. I use Qt as an IDE. The steps are as follows. 1. Capture the webcam 2. Convert the image from RGB to HSV 3. Split the HSV into 3 channels using cvSplit 4. Threshold all of the 3 channels by choosing the right values (trial and error) 5. Merge all of the thresholded images together by using cvAnd 6. Filter the image 7. Use cvFilterByArea to ignore the small area and noise 8. Render the blob