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Proceedings Paper

Radical improvement of interlaced scanning DTV broadcasting system
Author(s): Shi-Dong Chen; Jilian Zhu
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Paper Abstract

In this paper the line-interlaced scanning DTV broadcasting system is studied. The baseband of interlaced scanning system is introduced which can be reconstructed without spectral aliasing in DTV receiver, and the temporal resolution factor is invited that adjusts the shape of baseband to best match the spectrum of broadcasting video signal. A novel DTV broadcasting system is proposed which employs progressive scanning in camera and in monitor while adopts line-interlaced scanning for video codec, compatible with existing interlaced scanning DTV broadcasting System. This DTV broadcasting system, which only carry the baseband signals of interlaced scanning, can eliminate the spectral replica generated by interlaced scanning, and can reconstruct progressive scanning video signal without spectral aliasing in receiver, hence radically improving the image quality of DTV broadcasting system. Similarly the 2-D interlaced scanning is studied and the improved 2-D interlaced scanning DTV system is proposed. This system is theoretically proved to be able to give visually better image quality of reconstructed picture than the line-interlaced scanning DTV system for it owns larger spectral capacity without aliasing and the optimal 3-D spectrum matching transmission of video sequence.

Paper Details

Date Published: 18 October 1999
PDF: 12 pages
Proc. SPIE 3808, Applications of Digital Image Processing XXII, (18 October 1999); doi: 10.1117/12.365814
Show Author Affiliations
Shi-Dong Chen, Institute of Electronics (China)
Jilian Zhu, Institute of Electronics (China)


Published in SPIE Proceedings Vol. 3808:
Applications of Digital Image Processing XXII
Andrew G. Tescher, Editor(s)

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