Compact (and accurate) early vision processing in the harmonic space
Compact (and accurate) early vision processing in the harmonic space
复制标题
谐波空间中紧凑(且准确)的早期视觉处理
DOI:
10.5220/0002050502130220
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
N. Krüger
中科院分区:
文献类型:
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作者:
S. Sabatini;Giulia Gastaldi;F. Solari;Karl Pauwels;M. V. Hulle;Javier Díaz;E. Ros;N. Pugeault;N. Krüger
The efficacy of anisotropic versus isotropic filtering is anayzed with respect to general phase-based metrics for early vision attributes. We verified that the spectral information content gathered through oriented frequency channels is characterized by high compactness and flexibility, since a wide range of visual attributes emerge from different hierarchical combinations of the same channels. We observed that it is preferable to construct a multichannel, multiorientation representation, rather than using a more compact representation based on an isotropic generalization of the analytic signal. The complete harmonic content is then combined in the phaseorientation space at the final stage, only, to come up with the ultimate perceptual decisions, thus avoiding an “early condensation” of basic features. The resulting algorithmic solutions reach high performance in real-world situations at an affordable computational cost.
DOI:
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