Title :
Frequency domain down-conversion of HDTV using adaptive motion compensation
Author :
Vetro, Anthony ; Sun, Huifang ; Bao, Jay ; Poon, Tommy
Author_Institution :
Adv. Technol. Lab., Mitsubishi Electr. ITA, Japan
Abstract :
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 8×8 DCT coefficients from four original 8×8 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
Keywords :
adaptive signal processing; decoding; digital television; discrete cosine transforms; frequency-domain synthesis; high definition television; image sequences; motion compensation; signal synthesis; transform coding; video coding; DCT coefficients; HDTV signal; NTSC monitor; adaptive motion compensation; adaptive motion compensation algorithm; complexity; digital TV; down-conversion decoder; frequency domain down-conversion; frequency synthesis algorithm; image quality; image sequences; Decoding; Discrete cosine transforms; Displays; Frequency domain analysis; Frequency synthesizers; HDTV; Image sequences; Monitoring; Motion compensation; Signal synthesis;
Conference_Titel :
Image Processing, 1997. Proceedings., International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8183-7
DOI :
10.1109/ICIP.1997.648074
