Corner detection and curve representation by circular histograms of contour chain code

1999 ◽  
Vol 35 (13) ◽  
pp. 1065 ◽  
Author(s):  
F. Arrebola ◽  
P. Camacho ◽  
A. Bandera ◽  
F. Sandoval
Keyword(s):  
Corner Detection ◽  
Chain Code ◽  
Curve Representation ◽  
Circular Histograms

Research on the Method of Orthogonal Three-Direction Chain Code Used in Corner Detection of Hand Gesture

2012 ◽  
Vol 241-244 ◽  
pp. 3059-3062
Author(s):  
Ling Hua Li ◽  
Shou Fang Mi
Keyword(s):  
American Sign Language ◽  
Sign Language ◽  
Detection Rate ◽  
Main Idea ◽  
Corner Detection ◽  
Hand Gesture ◽  
American Sign ◽  
Well Performance ◽  
Chain Code

This paper describes the research on the method of orthogonal three-direction chain code (3OT) used in corner detection of hand gesture. The research is discussed from two aspects: the main idea of 3OT and the experiments on corner detection for hand gesture images of 26 letters in American Sign Language by using 3OT. Experiment results show that the method has well performance with exact corner detection rate and least false corner’s number.

scholarly journals Polygonal Approximation of Contour Shapes Using Corner Detectors

2009 ◽  
Vol 7 (03) ◽  
Author(s):  
Hermilo Sánchez-Cruz ◽  
Ernesto Bribiesca
Keyword(s):  
Corner Detection ◽  
New Method ◽  
Polygonal Approximation ◽  
Chain Code ◽  
Original Region ◽  
The Difference ◽  
Error Parameter

A great amount of corner detectors that appear in literature are based on using the Freeman chain code of eight directions, which is used to represent contour shapes. We propose a new method for corner detection based on a three-symbol chain code representation, which requires lower storage memory and an easy way to obtain shape corners. We compare it with five existing methods, which are well known in the literature, giving our method a better performance. Furthermore, in order to reconstruct the original shapes through polygonal approximations, we propose an error parameter to quantify the efficiency. This can be accomplished by considering the redundancy of points produced when looking for corners and when computing the difference between the original region and the approximated polygon.

Corner Detection and Curve Representation Using Cubic B-Splines

1988 ◽  
Vol 19 (12) ◽  
pp. 73-80 ◽  
Author(s):  
Yoshio Yasumoto ◽  
Gerard Medioni
Keyword(s):  
Corner Detection ◽  
B Splines ◽  
Curve Representation

Corner detection and curve segmentation by multiresolution chain-code linking

2005 ◽  
Vol 38 (10) ◽  
pp. 1596-1614 ◽  
Author(s):  
Fabián Arrebola ◽  
Francisco Sandoval
Keyword(s):  
Corner Detection ◽  
Chain Code

Corner detection from chain-code

1990 ◽  
Vol 23 (1-2) ◽  
pp. 51-68 ◽  
Author(s):  
Hong-Chih Liu ◽  
M.D Srinath
Keyword(s):  
Corner Detection ◽  
Chain Code
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