Linear filters

Wiener Filter Matlab Code

Wiener filter is a filter used to produce an estimate of a desired or target random process by linear time-invariant filtering an observed noisy process, assuming known stationary signal and noise spectra, and additive noise. The Wiener filter minimizes the mean square error between the estimated random process and the desired process.

De noise color or gray level images by using hybred dwt with wiener filter in matlab

The following Matlab project contains the source code and Matlab examples used for de noise color or gray level images by using hybred dwt with wiener filter. This function is hybred DWT with Wiener Filters.. these two filters are applied on high-frequency and low frequency sub-bands .. this function is very simple use... Good luck

Gabor Filter Matlab Code

Gabor filter is a linear filter used for edge detection. Frequency and orientation representations of Gabor filters are similar to those of the human visual system, and they have been found to be particularly appropriate for texture representation and discrimination. In the spatial domain, a 2D Gabor filter is a Gaussian kernel function modulated by a sinusoidal plane wave.

Gabor filter bank in matlab

The following Matlab project contains the source code and Matlab examples used for gabor filter bank. Features of this implementation of Gabor: - has paramaters to control filter size, orientation, postion and frequency - has ability to compensate DC component - kernel contains functions to extract amplitudes, phases, real and imag parts - can show filter bank and responses - convolution (and feature extraction) can be done by calling only one function Warning:  requires Matlab >=7.

Kalman Filter Matlab Code

Kalman filter is an algorithm that uses a series of measurements observed over time, containing noise (random variations) and other inaccuracies, and produces estimates of unknown variables that tend to be more precise than those based on a single measurement alone.

kalman filter

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