Generation of All-pole 2-D Digital Filters from All-pass Filters » książka
Generation of All-pole 2-D Digital Filters from All-pass Filters
ISBN-13: 9783639067682 / Angielski / Miękka / 2008 / 436 str.
This work investigates the possibility of obtaining 2-D all-pole low-pass filters, starting from all- pass filters. Previously, it has been shown that only 2-D band-pass and/or band-elimination filters were possible, when the starting point was the corresponding all-pass filters. In order to obtain such low-pass filters, the structure has been modified and the corresponding design procedure is enunciated. Starting from such analog low-pass filters, 2-D digital filters (low-pass, high-pass, band-pass and band-elimination) have been obtained by the use of generalized bilinear transformations, which ensure stability. Further, it has been demonstrated that such filters can be effectively used in image processing applications."
This work investigates the possibility of obtaining 2-D all-pole low-pass filters, starting from all- pass filters. Previously, it has been shown that only 2-D band-pass and/or band-elimination filters were possible, when the starting point was the corresponding all-pass filters. In order to obtain such low-pass filters, the structure has been modified and the corresponding design procedure is enunciated. Starting from such analog low-pass filters, 2-D digital filters (low-pass, high-pass, band-pass and band-elimination) have been obtained by the use of generalized bilinear transformations, which ensure stability. Further, it has been demonstrated that such filters can be effectively used in image processing applications.
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