IEEE Transactions on Pattern Analysis and Machine Intelligence
VisualSEEk: a fully automated content-based image query system
MULTIMEDIA '96 Proceedings of the fourth ACM international conference on Multimedia
Digital Image Processing
Affine-Invariant Sketch-Based Retrieval of Images
CGI '01 Computer Graphics International 2001
Sketch-Based Images Database Retrieval
MIS '98 Proceedings of the 4th International Workshop on Advances in Multimedia Information Systems
Evaluation of MPEG-7 shape descriptors against other shape descriptors
Multimedia Systems
Sketch-based image matching Using Angular partitioning
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
A contour-based approach to multisensor image registration
IEEE Transactions on Image Processing
MPEG-7 visual shape descriptors
IEEE Transactions on Circuits and Systems for Video Technology
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This paper presents a novel effective method for line segment extraction using chain code differentiation. The resulting line segments are employed for shape feature extraction. Length distribution of the extracted segments along with distribution of the angle between adjacent segments are exploited to extract compact hybrid features. The extracted features are used for sketch-based shape retrieval. Comparative results obtained from six other well known methods within the literature have been discussed. Using MPEG-7 contour shape database (CE-1) as the test bed, the new proposed method shows significant improvement in retrieval performance for sketch-based shape retrieval. The Average Normalized Modified Retrieval Rank (ANMRR) is used as the performance indicator. Although the retrieval performance has been improved using the proposed method, its computational intensity and subsequently, its feature extraction time are slightly higher than some other methods.