| US 7,577,311 B2 | ||
| Color fringe desaturation for electronic imagers | ||
| Russell J. Palum, Rochester, N.Y. (US); Bruce H. Pillman, Rochester, N.Y. (US); and Lynn V. Larsen, East Rochester, N.Y. (US) | ||
| Assigned to Eastman Kodak Company, Rochester, N.Y. (US) | ||
| Filed on May 03, 2005, as Appl. No. 11/121,324. | ||
| Prior Publication US 2006/0251322 A1, Nov. 09, 2006 | ||
| Int. Cl. G06K 9/40 (2006.01); G06K 9/00 (2006.01); G06K 9/38 (2006.01); G06K 9/42 (2006.01); G06K 9/44 (2006.01); G03F 3/08 (2006.01); G09G 1/02 (2006.01) | ||
| U.S. Cl. 382—275 [382/167; 382/257; 382/266; 382/270; 382/274; 358/523; 345/28] | 15 Claims |
| 1. A method for correcting colored fringe artifacts in a region of a color digital image comprised of a two-dimensional array
of image pixels, the colored fringe artifacts occurring round saturated image pixels captured by an electronic imager associated
with a color filter array, comprising a processor for performing the following steps:
(a) providing a threshold map of the image based on thresholding one or more color channels of the color digital image with
a common or separate threshold value for each color channel;
(b) providing a first edge map representing colored fringe pixels having colored fringe artifacts by dilating the threshold
map as a function of the width of the colored fringe artifact, producing a first dilated threshold map and subtracting the
threshold map from the first dilated threshold map; and
(c) color-desaturating the colored fringe image pixels that correspond to the first edge map to provide a corrected color
digital image having reduced colored fringe artifacts.
|