Method of and apparatus for filtering image

Details Method of and apparatus for filtering image Method of and apparatus for filtering image

1997-08-18

1999-10-19

Rogers, Scott

Image analysis

Image enhancement or restoration

Image filter

382266, 382275, G06K 940, G06T 500

Patent

active

059701790

ABSTRACT:
In a method of image filtering for carrying out picture element interpolation on a digital image signal obtained by sampling at a predetermined density an image signal representing an original image, the number of image signal components of the digital image signal is increased by interpolating, into the digital image signal, image signal components whose values are obtained on the basis of a predetermined operation using values of all the picture elements within the area covered with a filter and the coefficient of the filter corresponding to each of the picture elements. When an edge portion exists in the area covered with the filter, the predetermined operation is carried out after the image signal components for the picture elements representing the edge portion are corrected.

REFERENCES:
patent: 5454052 (1995-09-01), Kojima
patent: 5754710 (1998-05-01), Sekine et al.
patent: 5796878 (1998-08-01), Nakayama et al.

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