Dynamic chain-based thresholding using global characteristics

Details Dynamic chain-based thresholding using global characteristics Dynamic chain-based thresholding using global characteristics

2006-11-07

2006-11-07

Mancuso, Joseph (Department: 2624)

Image analysis

Image compression or coding

Contour or chain coding

C382S199000

Reexamination Certificate

active

07133564

ABSTRACT:
One embodiment relates to an apparatus for image processing. The apparatus includes a candidate edge chain identifier for identifying candidate edge chains in an image being processed, means for calculating a dynamic chain-based threshold function that is dependent on at least one characteristic of the image being processed, and a threshold applicator for applying the dynamic chain-based threshold function to the candidate edge chains. The characteristic of the image being processed may be global in that it is determined from the overall image being processed. A system may include an encoder or a decoder, both of which include the above apparatus. Another embodiment relates to a method for image processing. The method determines a dynamic chain-based threshold function that is dependent on at least one characteristic of the image being processed and applies the dynamic threshold to a candidate edge chain.

REFERENCES:
patent: 5835237 (1998-11-01), Ebrahimi
patent: 5978513 (1999-11-01), Murayama
patent: 6002794 (1999-12-01), Bonneau et al.
patent: 6094508 (2000-07-01), Acharya et al.
patent: WO 00/77735 (2000-12-01), None
“Color Image Segmentation Using Modified HSI System for Road Following”. Lin, Xueyin and Shaoyun Chen. Proceedings of the 1991 IEEE International Conference on Robotics and Automation. Apr. 1991.
“A Comparative Study on Color Edge Detection”. Koschan, Andreaas. Proceedings 2nd Asian Conference on Computer Vision ACCV'95. Dec. 1995. vol. III. pp. 574-578.
A.D. Brink, “Edge-Based Dynamic Tresholding Of Digital Images” XP000926357, IEEE 1991, p. 63; Dept. of Computational and Applied Mathematics, Johannesburg.
Wei Lei, et al. “Segmentation Based Coding Of Motion Compensated Prediction Error Images” XP000926358, Apr. 30, 1993, pp. 357-360, vol. 5; Signal Processing Laboratory, Switzerland.
“Canny edge detector demos” [on-line], [retrieved on Feb. 14, 2002] Retrived from the internet: URL:http://robotics.eecs.berkeley.edu/sastry/ee20/cademo.html.
Charlie Rothwell, et al. “Driving Vision by Topology” Dec. 1994, pp. 1-29, INRIA Sophia Antipolis, France.
Adityo Prakash, et al. “Method and Apparatus For Efficient Video Processing” U.S. Patent Appl. No. 09/550,705 filed Apr. 17, 2000.
Adityo Prakash, et al. “Dynamic Thresholding” U.S. Appl. No. 60/272,332 filed Feb. 28, 2001.
“Classical Feature Detector” [on-line] [retrieved on Feb. 16, 2002] Retrieved from the Internet: URL:http://www.dai.ed.ac.uk/CVonline/local—copies/owens/lect6
ode2.html.

Affiliated with

Also associated with

Rating

Dynamic chain-based thresholding using global characteristics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dynamic chain-based thresholding using global characteristics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic chain-based thresholding using global characteristics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3686661