Image Processing Toolbox User's Guide |

**Filter Design**

This section describes working in the frequency domain to design filters. Topics discussed include

- Finite impulse response (FIR) filters, the class of linear filter that the toolbox supports
- The frequency transformation method, which transforms a one-dimensional FIR filter into a two-dimensional FIR filter
- The frequency sampling method, which creates a filter based on a desired frequency response
- The windowing method, which multiplies the ideal impulse response with a window function to generate the filter
- Creating the desired frequency response matrix
- Computing the frequency response of a filter

This section assumes you are familiar with working in the frequency domain. This topic is discussed in many signal processing and image processing textbooks.

Using Predefined Filter Types | FIR Filters |

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