H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/21 (2006.01) H04N 5/213 (2006.01)
Patent
CA 2547954
Spatial noise is reduced in an image having a plurality of pixels by detecting object boundaries and unstructured areas in the image and applying 3-tap high pass filters to each pixel in the image in at least four, but less than eight directions to determine the best direction for local low pass filtering. Low pass filtering is applied only along object boundaries and unstructured areas within the image so as to minimize the tendency to blur image edges. Using only four high pass filters to locate horizontal, vertical and diagonal image edges passing through the center of a 3x3 pixel array provides good results.
Le bruit spatial est réduit dans une image ayant une pluralité de pixels par la détection de frontières d'objets et de zones non structurées dans l'image et l'application de filtres passe-haut à trois prises à chaque pixel dans l'image dans au moins quatre, mais moins de huit directions en vue de déterminer la meilleure direction pour chaque filtrage passe-bas local. Le filtrage passe-bas est appliqué uniquement selon les frontières d'objets et de zones non structurées au sein de l'image en vue de minimiser la tendance de rendre flous les contours d'images. L'utilisation de seulement quatre filtres passe-haut pour la localisation des contours d'image horizontal, vertical et diagonal traversant le centre d'un réseau de pixel 3x3 fournit de bons résultats.
General Instrument Corporation
Gowling Lafleur Henderson Llp
LandOfFree
Directional video filters for locally adaptive spatial noise... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Directional video filters for locally adaptive spatial noise..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directional video filters for locally adaptive spatial noise... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1660276