TAILIEUCHUNG - Design of efficient circularly symmetric two-dimensional variable digital FIR filters

Circularly symmetric two-dimensional (2D) finite impulse response (FIR) filters find extensive use in image and medical applications, especially for isotropic filtering. Moreover, the design and implementation of 2D digital filters with variable fractional delay and variable magnitude responses without redesigning the filter has become a crucial topic of interest due to its significance in low-cost applications. Recently the design using fixed word length coefficients has gained importance due to the replacement of multipliers by shifters and adders, which reduces the hardware complexity. Among the various approaches to 2D design, transforming a one-dimensional (1D) filter to 2D by transformation, is reported to be an efficient technique. In this paper, 1D variable digital filters (VDFs) with tunable cut-off frequencies are designed using Farrow structure based interpolation approach, and the sub-filter coefficients in the Farrow structure are made multiplier-less using canonic signed digit (CSD) representation. The resulting performance degradation in the filters is overcome by using artificial bee colony (ABC) optimization. Finally, the optimized 1D VDFs are mapped to 2D using generalized McClellan transformation resulting in low complexity, circularly symmetric 2D VDFs with real-time tunability. | Design of efficient circularly symmetric two-dimensional variable digital FIR filters

• Vật lý
• 2D circularly symmetric FIR
• Variable digital filters
• Variable fractional delay filters
• McClellan transformation
• Canonic signed digit
• Artificial bee colony algorithm
• Journal of Automation and Control Engineering
• Improvement of buck converter performance
• Artificial bee colony optimized pid controller
• Artificial Bee Colony
• The PID algorithm
• Designed buck converter
• The electrical discharge machining
• The EDM processes
• Surface Roughness
• EDM of EN31 tool steel
• Approximation of the piecewise function
• Neural fuzzy networks
• PV array
• Storage battery
• Bee colony
• Genetic algorithm
• Life cycle cost
• Stand alone photovoltaic system
• Cosine modulation
• Non uniform filter banks
• Gravitational Search algorithm
• Harmony Search algorithm
• Optimization algorithm
• Power loss
• Voltage profile
• Meta heuristic optimization
• Solar Photovoltaics Distributed Generation
• AODV protocol
• Contention window
• Mobile ad hoc network
• Multi hop jumping