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Novel and fast parallel algorithms for the 2-D DHT-based real-valued discrete Gabor transform (RDGT) and its inverse transform are presented based on 2-D filterbanks. A 2-D analysis filterbank is designed for the 2-D RDGT and a 2-D synthesis filterbank is designed for the 2-D inverse RDGT. The parallel channel in each of the two filterbanks has a unified structure and can apply the 2-D fast DHT (discrete...
DCT kernel based finite discrete Gabor expansion (DGE) and discrete Gabor transform (DGT) implemented by filterbanks are presented. An analysis filterbank is designed for the finite DGT and a synthesis filterbank is designed for the finite DGE. The parallel channel in each of the two filterbanks has a unified structure and can apply the fast DCT (discrete cosine transform) algorithm to reduce its...
According to the demand of electronic and information industry, the cultivation goal of the electronic and information engineering is studied. In order to keep up with science development and national information, education reform has been done. Some achievements of reform and practice of teaching during over past years have been introduced, including the rewards of electronic design contest and national...
The 2-D Gabor transform has been recognized as being useful in diverse areas such as image compression, texture analysis, image segmentation, and image recognition; however, its real time applications have been limited due to the high computational complexity of the traditional 2-D complex-valued discrete Gabor transform (CDGT) algorithms. In this paper, 2-D discrete Hartley transform (DHT)-based...
Novel and fast parallel algorithms for the DHT-based real-valued discrete Gabor expansion (DGE) and discrete Gabor transform (DGT) are presented based on filterbanks. An analysis interbank is designed for the DHT-based real-valued DGT and a synthesis interbank is designed for the DHT-based real-valued DGE. The parallel channel in each of the two filterbanks has a unified structure and can apply the...
The traditional DCT-based real-valued discrete Gabor transform (RGDT) was limited to the critical sampling case. The biorthogonality relationship between the analysis window and synthesis window for the transform was not unveiled. To overcome those drawbacks, this paper proposes a novel DCT-based real-valued discrete Gabor transform, which can be applied under both the critical sampling condition...
In this paper, the DCT-based real-valued discrete Gabor transform (RDGT) is briefly reviewed, and then, block time-recursive algorithms for the efficient and fast computation of the RDGT coefficients and for the fast reconstruction of the original signal from the coefficients are developed in both the critical sampling case and the oversampling case. Unified parallel lattice structures for the implementation...
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