Questions

1. Write an OpenCV code for detecting objects of yellow color from the video.
2. In which situations will the object detection using color fail?
3. Why is the Canny edge detection algorithm better than the other edge detection algorithm seen in the last chapter?
4. What can be done to reduce the noise sensitivity of Hough transform?
5. What is the importance of the threshold in the FAST key point detector?
6. What is the importance of the Hessian threshold in the SURF detector?
7. If the scale factor in a Haar cascade is changed from 1.01 to 1.05 then what effect will it have on output?
8. Compare the MoG and GMG background subtraction methods. What can be done to remove noise from GMG outputs?