Fast parallel approach for 2-D DHT-based real-valued discrete Gabor transform.
basic_science · Level V
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- Record sourced from PubMed, PMID 19651555.
- Also identified by DOI 10.1109/TIP.2009.2028923.
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Abstract
Two-dimensional fast Gabor transform algorithms are useful for real-time applications due to the high computational complexity of the traditional 2-D complex-valued discrete Gabor transform (CDGT). This paper presents two block time-recursive algorithms for 2-D DHT-based real-valued discrete Gabor transform (RDGT) and its inverse transform and develops a fast parallel approach for the implementation of the two algorithms. The computational complexity of the proposed parallel approach is analyzed and compared with that of the existing 2-D CDGT algorithms. The results indicate that the proposed parallel approach is attractive for real time image processing.