1 June 1990 Hybrid DCT-codec with local adaptivity for the interlaced HDTV transmission with 140 Mbit/s
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wieland Jass, Wieland Jass, Robert Kutka, Robert Kutka, Walter Tengler, 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); doi: 10.1117/12.19528; https://doi.org/10.1117/12.19528
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