3 June 1997 Biologically inspired analog wavelet analyzers
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Abstract
Retinal processing is known to condense space, time, and color information into three basic channels known as the rod, magnocellular, and parvoceliular channels. The magnocellular channel executes a spatial band-pass filter in the lower end of the spatial frequency spectrum, and the parvocellular channel executes a spatial band-pass filter in the higher end of the spectrum. In an analogous fashion, conventional wavelet analysis requires separate high-pass and low-pass filtering operations on data. Previous retinal designs have provided these filtering operations seen in natural processors. The rationale for such filters is presented along with concepts for implementing high-speed analog wavelet analyzers. These concepts are built on existing understanding of vision processing and previously demonstrated analog retinal design chips.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Geoffrey W. Brooks, "Biologically inspired analog wavelet analyzers", Proc. SPIE 3016, Human Vision and Electronic Imaging II, (3 June 1997); doi: 10.1117/12.274552; https://doi.org/10.1117/12.274552
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