Inventor · disambiguated record
Ibrahim Hajjahmad
Also filed as: HAJJAHMAD IBRAHIM
9 granted patents·636 citations·filing 1995–2000
92Inventor score
Files withPOLAROID CORP9
Top patents by PatentIndex Score
9 records- 0191US5923380AMethod for replacing the background of an imagePOLAROID CORP·Filed 1996·Granted Jul 13, 1999·152 cites·14 claims
- 0289US6643406B1Method and apparatus for performing linear filtering in wavelet based domainPOLAROID CORP·Filed 2000·Granted Nov 4, 2003·68 cites·46 claims
- 0389US6151420AMinimizing blocking artifacts in a filtered imagePOLAROID CORP·Filed 1995·Granted Nov 21, 2000·125 cites·14 claims
- 0482US5729631AImage noise reduction system using a wiener variant filter in a pyramid image representationPOLAROID CORP·Filed 1995·Granted Mar 17, 1998·88 cites·9 claims
- 0578US5933537AMethod and apparatus for conversion of frequency-coefficient matricesPOLAROID CORP·Filed 1997·Granted Aug 3, 1999·68 cites·13 claims
- 0670US5870505AMethod and apparatus for pixel level luminance adjustmentPOLAROID CORP·Filed 1996·Granted Feb 9, 1999·41 cites·6 claims
- 0768US5737450AMethod and apparatus for fast two-dimensional cosine transform filteringPOLAROID CORP·Filed 1995·Granted Apr 7, 1998·47 cites·26 claims
- 0853US5887084AStructuring a digital image into a DCT pyramid image representationPOLAROID CORP·Filed 1997·Granted Mar 23, 1999·29 cites·16 claims
- 0953US5748770ASystem and method for color recovery using discrete cosine transformsPOLAROID CORP·Filed 1995·Granted May 5, 1998·18 cites·6 claims
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