Circular median filter

Details Circular median filter Circular median filter

1998-02-03

1999-10-19

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708304, G06F 700

Patent

active

059681110

ABSTRACT:
A circular median filter outputs a median value among data expressed as angles as well as magnitudes. If external new data is input to the circular median filter, a plurality of median cells delete the firstly input data among a plurality of prestored data and sort a plurality of data including the remaining prestored data and the newly input data after deletion of the firstly input data on the basis of a data magnitude. A median determiner receives the sorted data from the plurality of median cells, selects particular data corresponding to a maximum distance from the sorted data, and then outputs the selected particular data as median data. Here, the maximum distance is a maximum value among distances representing differences between data stored in two neighboring median cells among the plurality of median cells for storing the sorted data, and the particular data is data received from the median cell which is the farthest from the two median cells corresponding to the maximum distance.

REFERENCES:
patent: 4672567 (1987-06-01), Kelly et al.
patent: 4713786 (1987-12-01), Roskind
patent: 4951242 (1990-08-01), Hobson
patent: 5708595 (1998-01-01), Connell
patent: 5900006 (1999-05-01), Yoon

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