Area Efficient and Low Power Multiplexer based Data Comparator for Median filter in Denoising Application

A Novel Area efficient and low power multiplexer based Data comparator for median filter in De-noising application is proposed. The proposed method uses multiplexer based implementation of borrow equation in a full subtractor which acts as a basic processing element of a Data Comparator. The proposed work was implemented in Microwind for three different Models of Mosfet and different technologies. The modifications in the existing borrow equation of a full subtractor using multiplexer only resulted in reduced number of transistors with reduced power. For an 8 bit image de-noising approach using median filter, which consists of a 8 bit data comparator will require only 116 transistors and dissipates 52.25uw of power for 90nm technology.