Hybrid DCT-codec with local adaptivity for the interlaced HDTV transmission with 140 Mbit/s

Wieland Jass; Robert Kutka; Walter Tengler

doi:10.1117/12.19528

1 June 1990 Hybrid DCT-codec with local adaptivity for the interlaced HDTV transmission with 140 Mbit/s

Wieland Jass, Robert Kutka, Walter Tengler

Proceedings Volume 1244, Image Processing Algorithms and Techniques; (1990) https://doi.org/10.1117/12.19528
Event: Electronic Imaging: Advanced Devices and Systems, 1990, Santa Clara, CA, United States

Abstract

With a HDTV coding method for the interlaced format, that is based on the DCT, mechanisms for local adaptivity are described. There are two alternative adaption methods regarding the special situation with the interlaced format. Further mechanisms concern quality parameters as a spatial frequency cut-off and the quantizer step size which adapt to the local image content. Results of a study which compares the different adaptive approaches show the influence on the image quality. So already a high degree of quality can be obtained. The application of a new motion compensation method between the fields adds essential further quality reserves.

Citation Download Citation

Wieland Jass, Robert Kutka, and Walter Tengler "Hybrid DCT-codec with local adaptivity for the interlaced HDTV transmission with 140 Mbit/s", Proc. SPIE 1244, Image Processing Algorithms and Techniques, (1 June 1990); https://doi.org/10.1117/12.19528

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