公开(公告)号：JPH08280039A

公开(公告)日：1996-10-22

申请号：JP24958395

申请日：1995-09-27

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BUIBUIANA DAARUTO ,  MATSUSHIMO MANKUUSO ,  RINARUDO PORUTSUTSUI ,  JIYANGUIDO RIZOTSUTO

IPC: H03H17/00 ,  H04N5/21 ,  H04N9/64

Abstract: PROBLEM TO BE SOLVED: To provide a device for the filtering of video images for effectively performing image filtering following the problems of noise attenuation, space/ time resolution and wide luminance change. SOLUTION: This device is provided with first input terminals PFy and PFuv, second input terminals DFy and CFuv and output terminals corresponding to the output terminal of the device respectively. Further, the device is provided with first and second circuit parts 3 and 4 provided with mutually cascade- connected first filter 5, second filter 6, third filter 8 and forth filter 9 and the first filter 5, the second filter 6 and the third filter 8 are provided with a calculation circuit means for processing a digitized luminance element Y by using a fuzzy theory. Further, the forth filter 9 is provided with the calculation circuit means for processing digitized chrominance elements U and V based on a parameter knr supplied from the second filter 6.