Frequency domain down-conversion of HDTV using adaptive motion compensation
Anthony Vetro, Hao Sun, Jingyao Bao, T.C. Poon · 2002
The paper investigates the possible means of down converting an incoming HDTV signal into one which is suitable for display onto an NTSC monitor. We present a novel frequency synthesis algorithm which constructs a set of 8/spl times/8 DCT coefficients from four original 8/spl times/8 DCT blocks. Also, a down-conversion decoder employing a unique adaptive motion compensation algorithm is presented. Using this fixed motion compensation algorithm, the proposed down-conversion technique is compared to the conventional method. Both yield acceptable image sequences with different trade-offs in complexity and quality.