Image analysis – Color image processing – Image segmentation using color
Reexamination Certificate
2005-07-26
2005-07-26
Patel, Kanjibhai (Department: 2625)
Image analysis
Color image processing
Image segmentation using color
C382S167000, C382S274000, C358S538000, C358S461000
Reexamination Certificate
active
06922486
ABSTRACT:
The invention relates to a process of shadow identification in a digital image. The digital image comprises a set of image points that can be located in a plane of the image, with each image point being associated with a color and brightness. The color is defined by chromatic components that can be located in the color space of an acquisition system, and the brightness is determinable from the chromatic components. According to the process of the present invention, for each image point, the brightness is determined; color standardization is carried out, leading to standardized chromatic components r, g, b; a chromatic brightness is determined from the standardized chromatic components r, g, b; and the chromatic brightness is compared with the brightness, to identify the presence of a shadow on the relevant image point.
REFERENCES:
patent: 6346994 (2002-02-01), Inoue
patent: 6463173 (2002-10-01), Tretter
patent: 2001/0053286 (2001-12-01), Cannata et al.
patent: 2002/0067626 (2002-06-01), Koike et al.
Salvador E. et al., “Shadow identification and classification using invariant color models” 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing Proceedings, vol. 3, May 7-11, 2001, pp. 1545-1548, XP002203786.
Funka-Lea G. et al. “Combining Color and Geometry for the Active, Visual Recognition of Shadows” Proceedings of the Fifth International Conference on Computer Vision. Cambridge, MA., Jun. 20-23, 1995, Proceedings of the International Conference on Computer Vision, Los Alamitos, IEEE Comp. Soc. Press, US, vol. conf. 5, Jun. 20, 1995, pp. 203-209, XP000557069.
Bayat Ali
Eastman Kodak Company
Novais David A.
Patel Kanjibhai
LandOfFree
Process of identification of shadows in an image and image... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process of identification of shadows in an image and image..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of identification of shadows in an image and image... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3434676