The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2000
Filed:
Feb. 20, 1998
Davide Carlini, Genova, IT;
Esaote S.p.A., Casale Monferrato, IT;
Abstract
High-pass filtering process for focusing images, particularly digital images, or similar, which are composed of a plurality of single dot areas, named pixels (Pi,j), having different individually variable luminous intensities I (Pi,j). The filtering process provides, for each pixel (Pi,j) a correction C (Pi,j) of the intensity value of said pixel (Pi,j), which is calculated statistically, on the basis of combinations of high-pass filterings performed in at least one, preferably in at least four different directions (0.degree., 45.degree., 90.degree., 135.degree.). According to the invention, the high-pass filter determines the correction (C,(Pr,r)) of each pixel (Pr,r; Px,x) on the basis of a mean of the intensities of at least pairs of pixels being next to, that is at predetermined distances from and on opposite sides of the filtered pixel (Pr,r; Px,x), with reference to each of the predefined directions (0.degree., 45.degree., 90.degree.,135.degree.), creating a corresponding new filtered image, composed of the corrected pixels.