Title :
Interlaced to progressive scan conversion for HD-MAC application
Author_Institution :
Samsung Electronics., Suwon, South Korea
fDate :
8/1/1992 12:00:00 AM
Abstract :
A multilevel nonlinear filter for simultaneous edge detection and noise suppression called a nested median filter/median averaging filter (NMF/MAF) pair is introduced. On the basis of the NMF/MAF pair, an interlaced-to-progressive (I/P) conversion is proposed to estimate motion vectors in the 40-ms mode of the HD-MAC system. Test results for HD-MAC applications confirmed that the proposed I/P conversion scheme was robust in preserving sharp edges, inhibiting edge shifting, and suppressing impulsive noise. The motion compensation interpolated HD-MAC image sequence with the proposed I/P conversion scheme showed 4~6 dB to the improvement in peak SNR (peak signal-to-noise ratio) compared to the interlaced scheme. A structural overview for implementation of the NMF/MAF integrated circuit is described. The features of this circuit are an integrated dynamic RAM based on horizontal line memories, a high-speed bubble sorter, and a window option circuit
Keywords :
convertors; digital filters; edge detection; filtering and prediction theory; high definition television; interference suppression; 40 ms; HD-MAC system; edge detection; edge shifting; filter pair; high-speed bubble sorter; horizontal line memories; image sequence; impulsive noise suppression; integrated circuit; integrated dynamic RAM; interlaced-to-progressive scan conversion; motion compensation interpolation; motion vector estimation; multilevel nonlinear filter; nested median filter/median averaging filter; noise suppression; peak SNR; peak signal-to-noise ratio; sharp edges; window option circuit; Image converters; Image edge detection; Image sequences; Integrated circuit noise; Motion compensation; Motion estimation; Noise robustness; Nonlinear filters; Signal to noise ratio; Testing;
Journal_Title :
Consumer Electronics, IEEE Transactions on
