Title :
Efficient scan conversion with edge enhancement and its VLSI architecture
Author :
Lee, Ho Young ; Bae, Tae Min ; Park, Jin Woo ; Song, Kun Woen ; Ha, Yeong Ho
Author_Institution :
Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea
Abstract :
Field-based scan conversion converts every field in an interlaced sequence to a progressive format or doubles the field rate from 60 Hz to 120 Hz. This paper proposes the new field-based scan conversion that consists of spatial interpolation based on spatial correlation and edge enhancement. First, edge-preserving directional interpolation is performed along the vertical direction to double the field rate. Second, edge enhancement based on unsharp masking is used to increase the contrast which is sensitive to the HVS (human visual system). The proposed method is very simple and hardware complexity for realizing the algorithm is very low
Keywords :
VLSI; adaptive signal processing; computational complexity; correlation methods; digital signal processing chips; image enhancement; image sequences; interpolation; video signal processing; visual perception; 120 kHz; HDTV; HVS; NTSC system; VLSI architecture; adaptive directional interpolation; edge enhancement; edge-preserving directional interpolation; efficient scan conversion; field rate; field-based scan conversion; hardware complexity; human visual system; interlaced sequence; progressive format; spatial correlation; spatial interpolation; unsharp masking; vertical direction; very low computational complexity; video signal processing; Bandwidth; Degradation; Electronic mail; Frequency; HDTV; Image converters; Interpolation; Signal processing algorithms; Very large scale integration; Visual system;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818367
