A note on the gradient of a multi-image
Computer Vision, Graphics, and Image Processing - Lectures notes in computer science, Vol. 201 (G. Goos and J. Hartmanis, Eds.)
Edge detection in multispectral images
CVGIP: Graphical Models and Image Processing
International Journal of Computer Vision
Color image processing and applications
Color image processing and applications
Similarity Retrieval of Trademark Images
IEEE MultiMedia
Color image quantization for frame buffer display
SIGGRAPH '82 Proceedings of the 9th annual conference on Computer graphics and interactive techniques
Color object detection using spatial-color joint probability functions
IEEE Transactions on Image Processing
Color edge detection using vector order statistics
IEEE Transactions on Image Processing
A polar-based logo representation based on topological and colour features
DAS '10 Proceedings of the 9th IAPR International Workshop on Document Analysis Systems
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In this paper, we present a logo and trademark retrieval system for general, unconstrained, color image databases that extends the Color Edge Co-occurrence Histogram (CECH) object detection scheme. We introduce more accurate information to the CECH, by virtue of incorporating color edge detection using vector order statistics. This produces a more accurate representation of edges in images, in comparison to the simple color pixel difference classification of edges as seen in the CECH. As such, we call this the Color Edge Gradient Co-occurrence Histogram (CEGCH). We use this as the main mechanism for our retrieval scheme. Results illustrate that the proposed retrieval system retrieves logos and trademarks with good accuracy.