A technique for fuzzy document binarization
DocEng '01 Proceedings of the 2001 ACM Symposium on Document engineering
A Cross-Type Peak-and-Valley Filter for Error Prevention and Resilience in Image Communications
PCM '02 Proceedings of the Third IEEE Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Information Sciences: an International Journal
An N-Dimensional Pseudo-Hilbert Scan for Arbitrarily-Sized Hypercuboids
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
A generalized 3-D Hilbert scan using look-up tables
Journal of Visual Communication and Image Representation
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Based on the space-filling approach, this paper presents a fast algorithm for window query on compressed images. Given a query window of size n1×n2, the proposed algorithm takes O(n1logT+P) time to perform the window query, where n1=max(n1, n2) and T×T is the image size; P is the number of outputted codes. The proposed algorithm improves the naive algorithm, which needs O(n1n2log T+P) time, significantly. Some experimentations are carried out to demonstrate the computational advantage of the proposed algorithm. From the experimental results, it is observed that the proposed algorithm has about 72-98% time improvement when compared to the naive algorithm.