Two-dimensional signal and image processing
Two-dimensional signal and image processing
Region-based coding of color images using Karhunen-Loeve transform
Graphical Models and Image Processing
FOCUS: Searching for Multi-colored Objects in a Diverse Image Database
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
Image Indexing Using Color Correlograms
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
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In many practical areas of visual pattern recognition the images are complex-valued. Examples include images generated from 2-dimensional colour, motion, radar and laser sensors. To this date the majority of encoding and matching schemes for such images do not treat the complex nature of the data in a unified way but, rather, separate the associated "channels" and combine them after processing each image attribute. In this paper we describe a technique which utilizes properties of the complex Fourier transform of complex images and develop new types of complex filters for colour and shape specific feature extraction and pattern matching. Results are encouraging particularly under quite noisy conditions.