28 May 1999 Spatial frequency filtering using hybrid polymer/VLSI technology
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Abstract
We present a new approach for achieving spatial frequency filtering in the analog domain. Our device, the Thin Film Analog Image Processor (TAIP), is a hybrid structure that combines the strengths of analog VLSI technology with the simplicity of a conducting polymer film. The TAIP consists of a silicon chip with a square array of metal pads corresponding to the image pixels, onto which a conducting polymer film is applied to create lateral interaction between pixels. Analog image data (0 - 2 Volts) is multiplexed into the array, and the image is processed with up to 72 dB of resolution. The TAIP arrays are capable of performing either high or low pass spatial frequency filtering, operations that become computationally intensive for large images in the digital domain. Multiple arrays can be combined to create tunable bandpass spatial frequency filters that are capable of extracting features from complex images. Two array formats have been fabricated, 60 X 80 and 320 X 240, each capable of 60 Hz operation with a power consumption of approximately 100 mW.
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Jon S. McElvain, Jon S. McElvain, John D. Langan, John D. Langan, Russel Behm, Russel Behm, M. Costolo, M. Costolo, Alan J. Heeger, Alan J. Heeger, } "Spatial frequency filtering using hybrid polymer/VLSI technology", Proc. SPIE 3669, Smart Structures and Materials 1999: Electroactive Polymer Actuators and Devices, (28 May 1999); doi: 10.1117/12.349691; https://doi.org/10.1117/12.349691
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