Date of Award
12-2010
Degree Type
Thesis-Restricted
Degree Name
M.S.
Degree Program
Engineering
Department
Electrical Engineering
Major Professor
Charalampidis, Dimitrios
Second Advisor
Jilkov, Vesselin
Third Advisor
Azzam, Rasheed
Abstract
Median filtering is a non-linear filtering technique which is effective in removing impulsive noise from data. In this thesis, directional median filtering has been implemented using cumulative histogram of samples in several directions. Different methods to implement directional median filtering have been proposed. The filtered images are smoothed along the direction of the filtering window. All implementations aimed to generate outputs in the least amount of time, while reducing the resource utilization on hardware. The implementation methods were designed for Xilinx Virtex 5 FPGA devices but were also attempted on Spartan 3E. The proposed methods used less than 30% of the resources on Virtex 5 FPGA but the resource utilization on Spartan 3E exceeded the number of available resources. After an initial delay, methods 1 and 2 generate a new output for every 5 clock cycles while method 3 generates an output for every 1.5 clock cycles.
Recommended Citation
Gundam, Madhuri, "Implementation of Directional Median Filtering using Field Programmable Gate Arrays" (2010). University of New Orleans Theses and Dissertations. 111.
https://scholarworks.uno.edu/td/111
Rights
The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation