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Punitha, P. and Guru, D. S. (2008) Symbolic image indexing and retrieval by spatial similarity: An approach based on B-tree. Pattern Recognition, 41 (6). 2068 - 2085. ISSN 0031-3203
Guru, D. S. and Vikram, T. N. and Punitha, P. (2007) Indexing and retrieval of symbolic images by spatial similarity: An approach based on kd-tree. In: Third National Conference on Advanced Image Processing and Networking, 2-3, March 2007, kovilpatti, Tamilnadu.
Punitha, P. and Guru, D. S. (2005) An invariant scheme for exact match retrieval of symbolic images: Triangular spatial relationship based approach. Pattern Recognition Letters, 26 (7). 893 - 907. ISSN 1872-7344
Punitha, P. and Guru, D. S. (2004) Similarity retrieval of symbolic images with multiple instances of iconic objects: a novel approach. In: Fourth Indian Conference on Computer Vision, Graphics and Image Processing ICVGIP-2004, 16-18, December 2004, Kolkata.
Guru, D. S. and Punitha, P. and Mahesh, S. (2004) Skew estimation in digitized documents: a novel approach. In: Fourth Indian Conference on Computer Vision, Graphics and Image Processing ICVGIP-2004,, 16-18, December 2004, Kolkata.
Guru, D. S. and Punitha, P. (2004) An invariant scheme for exact match retrieval of symbolic images based upon principal component analysis. PATTERN RECOGNITION LETTERS, 25 (1). pp. 73-86.
Guru, D. S. and Punitha, P. (2004) An invariant scheme for exact match retrieval of symbolic images: direction of reference based approach. In: Twelfth International conference on Advanced Computing and Communication ADCOM, 15-18, December 2004, Ahmedabad, Gujarat, India.
Guru, D. S. and Punitha, P. and Nagabhushan, P. (2003) Archival and retrieval of symbolic images: An invariant scheme based on triangular spatial relationship. Pattern Recognition Letters, 24 (14). 2397 - 2408. ISSN 1872-7344
Punitha, P. and Guru, D. S. (2001) Spatial knowledge representation: a brief survey. In: National Conference on Computers and Information Technology, 24-25, September 2001, Kilakarai.
