Two dimensional digital signal processing I: Linear filters

1982 ◽  
Vol 70 (5) ◽  
pp. 527-527
Author(s):  
E.S. Angel
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Two Dimensional ◽  
Linear Filters

scholarly journals Border Handling for 2D Transpose Filter Structures on an FPGA

2018 ◽  
Vol 4 (12) ◽  
pp. 138 ◽  
Author(s):  
Donald Bailey ◽  
Anoop Ambikumar
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Linear Filters ◽  
Filter Structure ◽  
Direct Form ◽  
Two Stages ◽  
Filter Structures ◽  
Zero Extension

It is sometimes desirable to implement filters using a transpose-form filter structure. However, managing image borders is generally considered more complex than it is with the more commonly used direct-form structure. This paper explores border handling for transpose-form filters, and proposes two novel mechanisms: transformation coalescing, and combination chain modification. For linear filters, coefficient coalescing can effectively exploit the digital signal processing blocks, resulting in the smallest resources requirements. Combination chain modification requires similar resources to direct-form border handling. It is demonstrated that the combination chain multiplexing can be split into two stages, consisting of a combination network followed by the transpose-form combination chain. The resulting transpose-form border handling networks are of similar complexity to the direct-form networks, enabling the transpose-form filter structure to be used where required. The transpose form is also significantly faster, being automatically pipelined by the filter structure. Of the border extension methods, zero-extension requires the least resources.

scholarly journals Interpolator: a two-dimensional graphical interpolation system for the simultaneous control of digital signal processing parameters

2001 ◽  
Vol 6 (2) ◽  
pp. 147-151 ◽  
Author(s):  
Martin Spain ◽  
Richard Polfreman
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Processing Parameters ◽  
Digital Audio ◽  
Two Dimensional ◽  
Current Position ◽  
Control Space ◽  
Simultaneous Control ◽  
Parameter Values

The musical use of realtime digital audio tools implies the need for simultaneous control of a large number of parameters to achieve the desired sonic results. Often it is also necessary to be able to navigate between certain parameter configurations in an easy and intuitive way, rather than to precisely define the evolution of the values for each parameter. Graphical interpolation systems (GIS) provide this level of control by allocating objects within a visual control space to sets of parameters that are to be controlled, and using a moving cursor to change the parameter values according to its current position within the control space. This paper describes Interpolator, a two-dimensional interpolation system for controlling digital signal processing (DSP) parameters in real time.

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