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An 8 \times 8 Cell Analog Order-Statistic-Filter Array With Asynchronous Grayscale Morphology in 0.13- \mu{\hbox {m}} CMOS

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2 Author(s)
Poikonen, J. ; Dept. of Inf. Technol., Univ. of Turku, Turku, Finland ; Paasio, A.

This paper presents an integrated 8 times 8 cell image processor array demonstrating the parallel implementation of analog order-statistic filtering and grayscale mathematical morphology. Each cell, connected locally to four nearest neighbors and sized 30 times 28 mum2, includes a digitally programmable five-input analog current-mode ranked-order filter. The array also demonstrates an implementation of asynchronously propagating morphological grayscale reconstruction, which is robust against device mismatch. The measurement results of all programmable order-statistic operations are shown, verifying the correct operation of the array. The chip was manufactured in a 0.13- mum 1-poly 6-metal CMOS technology and operates from a single 1.3-V power supply.

Published in:

Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:56 ,  Issue: 8 )

Date of Publication:

Aug. 2009

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