skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method for contour extraction for object representation

Abstract

Contours are extracted for representing a pixelated object in a background pixel field. An object pixel is located that is the start of a new contour for the object and identifying that pixel as the first pixel of the new contour. A first contour point is then located on the mid-point of a transition edge of the first pixel. A tracing direction from the first contour point is determined for tracing the new contour. Contour points on mid-points of pixel transition edges are sequentially located along the tracing direction until the first contour point is again encountered to complete tracing the new contour. The new contour is then added to a list of extracted contours that represent the object. The contour extraction process associates regions and contours by labeling all the contours belonging to the same object with the same label.

Inventors:
;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175480
Patent Number(s):
6,937,765
Application Number:
10/388,680
Assignee:
The Regents of the University of California (Los Alamos, NM)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Skourikhine, Alexei N., and Prasad, Lakshman. Method for contour extraction for object representation. United States: N. p., 2005. Web.
Skourikhine, Alexei N., & Prasad, Lakshman. Method for contour extraction for object representation. United States.
Skourikhine, Alexei N., and Prasad, Lakshman. Tue . "Method for contour extraction for object representation". United States. https://www.osti.gov/servlets/purl/1175480.
@article{osti_1175480,
title = {Method for contour extraction for object representation},
author = {Skourikhine, Alexei N. and Prasad, Lakshman},
abstractNote = {Contours are extracted for representing a pixelated object in a background pixel field. An object pixel is located that is the start of a new contour for the object and identifying that pixel as the first pixel of the new contour. A first contour point is then located on the mid-point of a transition edge of the first pixel. A tracing direction from the first contour point is determined for tracing the new contour. Contour points on mid-points of pixel transition edges are sequentially located along the tracing direction until the first contour point is again encountered to complete tracing the new contour. The new contour is then added to a list of extracted contours that represent the object. The contour extraction process associates regions and contours by labeling all the contours belonging to the same object with the same label.},
doi = {},
url = {https://www.osti.gov/biblio/1175480}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {8}
}

Patent:

Save / Share:

Works referenced in this record:

Geometric transform for shape feature extraction
conference, October 2000


A contour tracing algorithm that preserves common boundaries between regions
journal, May 1991


Fast algorithm for generating sorted contour strings
journal, August 2000


A new one-pass algorithm to detect region boundaries
journal, August 2001


Object Boundary Encoding — a new vectorisation algorithm for engineering drawings
journal, August 2001


Multiscale discretization of shape contours
conference, October 2000


A new chain code
journal, February 1999


Run-based algorithms for binary image analysis and processing
journal, January 1996


Tracing boundary contours in a binary image
journal, February 2002