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:
Apr. 07, 1998
Filed:
May. 05, 1997
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A rank order filter is disclosed in which the maximum value, the minimum value and the median value are determined in a 3.times.3 local area having three sample values in each of column and row. The three sample values in the 3.times.3 local area are rearranged in descending order of magnitude by column, and the maximum values or the minimum values in each column are compared with each other thereby to determine the maximum value or the minimum value in the 3.times.3 local area. Also, after comparing the median values with each other in each column, the maximum value in the column having the minimum median value, the minimum value in the column having the maximum median value and the median value in the column having the median median value are compared with each other. The result of comparison is used to determine the median value in the 3.times.3 local area.