29 results

Generalized implementation of the Savitzky-Golay FIR filter with extensive documentation. Allows asymmetrical and non-integer parameters.

The Savitzky-Golay filter is based on approximating the given data by a polynomial using the Least-Squares parameter estimation. This implementation contains a function SG_calc.m which calculated the

This function takes spectral data set and wavelength scale as input to calculate derivative spectra

Very simple function for Savitzky-Golay Smoothing

After looking at a lot of the Savitzky-Golay implementations on File Exchange, I could not find one as simple but as effective as this one. savGol is from the Book, "Solving Problems in Scientific

This function provide a Savitzky-Golay smoothing filter for 2D data.

This function provide a Savitzky-Golay smoothing filter for 2D data.

function c = generate_savitzkyGolay_coef1D(order,interval)

Routine to generate Savitzky-Golay smoothing and differentiation filters and routine to apply these

Contains savitzkyGolay.m and savitzkyGolayFilt.m:Function: Savitzky-Golay Smoothing and Differentiation Filter The Savitzky-Golay smoothing/differentiation filter (i.e., the

sgolayfilt

version 1.0.0.0

by Andrew Horchler

Savitzky-Golay differentiation filters

Savitzky-Golay differentiation filters.sgolayfilt is a replacement for Matlab's sgolay function that just calculates and returns the differentiation filters. The result is 2–4 times faster.

2-D Savitzky-Golay Differentiation Filter.

2-D Savitzky-Golay Differentiation Filter.Here the filter coefficients for the central point and the first order derivative (differentiation) is taken into account.Usage

FIR filter design via local moving window LS fitting - A magic smooth and derivative formula

i.e. the Polynomial smoothingfilter or the least-squares smoothing filter.

2-D Savitzky-Golay smoothing filter (i.e., the polynomial smoothing filter, or the least-squares smoothing filter) See Ref. [1] for details on the 1-D Savitzky-Golay smoothing filter

This function provide a Savitzky-Golay smoothing filter for 3D data.

This function provide a Savitzky-Golay smoothing filter for 3D data.

Savitzky-Golay smoothing and differentiation filter.

Function: Savitzky-Golay Smoothing and Differentiation Filter The Savitzky-Golay smoothing/differentiation filter (i.e., the polynomial smoothing/differentiation filter, or the

provide an alternative for Savitzky-Golay smoothing filter

The function smooths a input vector using Savitzky-Golay smoothing filter based on the degree of polynomial and the length of moving windows

Savitzky–Golay filter

Small script to apply a Savitzky-Golay filter to noisy data. No toolboxes required. Tested w/2014a but should work with any release.

Adaptive-degree polynomial filter (Savitzky-Golay Filter) for data differentiation (1st derivative).

Commonly, the degree of the fitting polynomial for the Savitzky-Golay filter is fixed. However, the polynomial degree can vary according to the sum of squares of fitting residuals and the statistical

The even-length Savitzky-Golay filter with a Gram polynomial approach.

The even-length Savitzky-Golay filter (i.e., polynomial filter or least-squares filter) for data smoothing and differentiation. The filter coefficients are calculated with the recursive properties of

Savitzky-Golay smoothing and differentiation filter calculated with the recursive properties ...

Savitzky-Golay smoothing and differentiation filter (i.e.,polynomial smoothing and differentiation filte, or least-squares smoothing and differentiation filter) calculated with the recursive

Spectral plots of Savitzky-Golay smoothing and differentiation filters

This zip-file contains two m-files that generate 2D spectral plots of smoothing and differentiation filters.The files are useful for illustration and educational purposes.Usage:[w,A] =

2-D Savitzky-Golay smoothing and differentiation filters, including those for mixed partial ...

2-D Savitzky-Golay (SG) Smoothing and Differentiation Filter. The filter coefficients are calculated from the decomposation property of the 2-D SG filters. In addition, the filter coefficients

Obtain the polynomial degree selected in the adaptive-degree polynomial filter.

function polynomial_degree=adpf(data_frame)Adaptive-Degree Polynomial Filter (Savitzky-Golay Filter)Commonly, the degree of the fitting polynomial for the Savitzky-Golay filter is fixed. However, the

fSGolayFilt

version 1.3.0.0

by Jan

Fast Savitzky Golay filter as multi-threaded C-Mex

fSGolayFilt is a fast polynomial smoothing filter for uniformly spaced signals. This implementation offers less flexibility than other versions found in the MATLAB Central (eg. from Jianwen Luo

This code correctly computes Savitzky-Golay filters. It is a replacement for the Matlab sgolay code.

This code computes Savitzky-Golay filters using a method similar to that used in the Matlab sgolay code. However, this implementation is far less prone to problems due to conditioning. Furthermore

Obtain the coefficients of the 2-D Savitzky-Golay smoothing and differentiation filter, ...

2-D Savitzky-Golay Smoothing and Differentiation Filter The filter coefficients are calculated from a matrix approach. h=sgsdf_2d(x,y,nx,ny,d,flag_coupling) x = x data point, e.g

explicit (closed-formed) solutions of the Savitzky-Golay smoothing and differentiation filter

Obtain the explicit (closed-formed) solutions of the Savitzky-Golay smoothing and differentiation filter using the Gram polynomials.Here only the filters for the central point (midpoint) are

z-transform of 1D & 2D Savitzky-Golay Smoothing and Differentiation Filter

Compute and plot 1D and 2D Savitzky-Golay smoothing and differentiation filters.Savitzky-Golay (GS)Filters are polynomial-based filters frequently used for processing of 2D Images. A good basic

A toolbox for importing and processing optical spectra acquired with portable spectroradiometers.

). It can post process spectra to calculate spectral reflectance, radiance and irradiance. It also provides functions for spectral smoothing with a Savitzky-Golay filter and the removal of the spectral

Movingslope

version 1.0.0.0

by John D'Errico

Sliding window regression to compute slope estimates along a curve

to fit a moderately low order polynomial regression model in a sliding window, then differentiate that model. (Like a Savitzky-Golay filter.) All of this can be done efficiently in Matlab using filter

De-Speckling SAR (Synthetic Aperture RADAR) Image

De-Speckling SAR (Synthetic Aperture RADAR) Image using Non-Decimated Wavelet Transform, Savitzky-Golay, and Median Filter, where by applying Brute Force Threshold algorithm as specified in paper

The digital differentiator from the Lagrange interpolation.

differentiators, Digit. Signal Prog. 2005, 15(2): 122-136. [6]Luo J W, Ying K, Bai J. Savitzky-Golay smoothing and differentiation filter for even number da, Signal Process. 2005, 85(7): 1429-1434