I got contacted by an HR and then scheduled a phone interviews with a group member. The first one mainly talked about what I did and how was it fit their requirement. It was smooth and easy. After passing this interview, I was scheduled another one with another group member, which I failed.
Interview questions [1]
Question 1
The project was to design a new image compression standard that can avoid existing patents, like the 8 by 8 block-wise DCT transform in JPEG standard. One question was asked during the interview: Why do you think that we use DCT based compression instead of wavelet based compression?