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Code covered by the BSD License

Highlights from
Toolbox signal

adjust_psnr(W,ptgt,vmax) adjust_psnr - adjust noise level to fit psnr
array_set_val( x, ind, v ) array_set_val - set a value in a multidimensional array using a vector for the index
clamp(x,a,b)
compute_conditional_histogram... compute_conditional_histogram - compute conditional histograms
compute_conv_matrix(x) compute_conv_matrix - compute a circular convolution matrix.
compute_cubic_spline(x,n) compute_cubic_spline - evaluate the nth derivative of the cubic spline.
compute_dct_matrix(w, ndims) compute_dct_matrix - compute the DCT matrix for a discrete cosine transform.
compute_diffusion_distance(x,... compute_diffusion_distance - compute the diffusion distance
compute_distance_matrix(X,x) compute_distance_matrix - compute pairwise distance matrix.
compute_distance_to_points(X,... compute_distance_to_points - compute euclidean distance to a set of points.
compute_entropy(M,T) compute_entropy - compute the entropy of a signal
compute_error_threshold(y,T); compute_error_threshold - compute the error for an approximation in an orthogonal basis.
compute_gaussian_filter(n,s,N... compute_gaussian_filter - compute a 1D or 2D Gaussian filter.
compute_grad(M,options) compute_grad - compute the gradient of an image using central differences
compute_histogram(M, options) compute_histogram - compute the (symmetric) histogram of a vector after threshold.
compute_histogram_distance(H,... compute_histogram_distance - compute distance between histograms
compute_histogram_rbf(f, sigm... compute_histogram_rbf - parzen windows density estimation
compute_hufftree(p) compute_hufftree - build a huffman tree
compute_impulse_noise(M,p,sig... compute_impulse_noise - add impulse noise to an image
compute_kurtosis(x, center_me... compute_kurtosis - compute the Kurtosis.
compute_laplacian_distributio... compute_laplacian_distribution - compute a laplacian distribution
compute_laplacian_matrix(n,op... compute_laplacian_matrix - compute the laplacian matrix
compute_mutual_information(h) compute_mutual_information - compute mutual information of two random variables
compute_pairwise_histogram(f,...
compute_rbf(x,d,xi, name) solve for weights
compute_rigidity_tensor(M,opt... compute_rigidity_tensor - compute the rigidity
compute_skewness(x,center_mea... compute_skewness compute the Skewness.
compute_structure_tensor(M,si... compute_structure_tensor - compute the structure tensor
compute_symmetric_conditional... compute_symmetric_conditional_histogram - compute a symmetric histogram
crop(M,n,c) crop - crop an image to reduce its size
dirac(s,n) dirac - dirac function.
gen_brownian_motion(n,d,sigma... gen_brownian_motion_1d - generate a 1D brownian motion
getoptions(options, name, v, ... getoptions - retrieve options parameter
imageplot(M,str, a,b,c) imageplot - diplay an image and a title
load_image(type, n, options) load_image - load benchmark images.
load_signal(name, n, options) load_signal - load a 1D signal
load_sound(name, n0, options)
mad(x,flag) MAD Mean/median absolute deviation.
peform_wiener_filtering(x0,x,... peform_wiener_filtering - perform Wiener filtering
perform_arithmetic_coding(x,d... perform_arithmetic_coding - perform adaptive arithmetic coding
perform_best_dct(x,dir,option... perform_best_dct - compute a best local DCT.
perform_chirpz_transform(x,z) perform_chirpz_transform - compute the chirp Z-transform
perform_classical_mds(D,ndims...
perform_conditional_histogram... compute_conditional_histogram - compute conditional histograms
perform_convolution(x,h, boun... perform_convolution - compute convolution with centered filter.
perform_dct2_transform(x,dir,... perform_dct2_transform - perform the DCT2 transform
perform_dct_transform(x,dir) perform_dct_transform - discrete cosine transform
perform_histogram_equalizatio... perform_histogram_equalization - perform histogram equalization
perform_histogram_matching(x,... perform_histogram_matching - match the histogram of two image.
perform_huffcoding(x,T,dir) perform_huffcoding - perform huffman coding
perform_kmeans(X,nbCluster,op... perform_kmeans - perform the k-means clustering algorithm.
perform_laplacian_fitting( h,... perform_laplacian_fitting - compute the parameter for a laplcian distribution
perform_moment_equalization(x... perform_kurtosis_equalization - equalize moments of order 1,2,3,4.
perform_noise_estimation(x) perform_noise_estimation - estimate additive noise level
perform_quantization(x, T, di... perform_quantization - perform a quantization of the signal with double zero bin.
perform_rbf_interpolation(Xi,... perform_rbf_interpolation - scattered data interpolation
perform_rle_coding(x, dir, op... perform_rle_coding - perform run length coding of a 1D sequence
perform_shannon_estimation(M,... evaluate_nbr_bits - evaluate the number of bits to code a signal
perform_shannon_interpolation... perform_shannon_interpolation - spectral interpolation
perform_spectral_orthogonaliz... perform_spectral_orthogonalization - orthogonalize a square matrix
perform_tensor_decomp(T,order... perform_tensor_decomp - perform an eigendecomposition.
perform_tensor_recomp(e1,e2,l... perform_tensor_recomp - create the tensor field corresponding to the given eigendecomposition.
perform_tensorial_transform(x... tensorial_transform - compute tensorial multiplication
perform_thresholding(x, t, ty... perform_thresholding - perform hard or soft thresholding
perform_vector_quantization(a... perform_vector_quantization - perform the quantization of a matrix
perform_vf_normalization(v1) perform_vf_normalization - renormalize a vf.
perform_walsh_transform(x) perform_walsh_transform - 1D and 2D walsh transform
plot_best_basis(x, btree, sty... plot_best_basis - plot a best local DCT basis
plot_hufftree(T,p) plot_hufftree - plot a huffman tree
plot_scattered(pos,z, resc) plot_scattered - plot 2D scattered data using triangulation.
plot_tensor_field(H, M, sub) plot_tensor_field - display a tensor field
prod_tf_sf(A,B) prod_tf_sf - compute the product of 2 tensor fields
prod_tf_sf(T1,s) prod_tf_sf - compute the product of a tensor field by a scalar field.
prod_tf_vf(t,v) prod_vf_vf - compute the product of a tensor field and a vector field.
prod_vf_sf(v1,s) prod_vf_sf - compute the product of a vector field by a scalar field.
prod_vf_vf(v1,v2) prod_vf_vf - compute the dot product of 2 vector field.
psnr(x,y, vmax) psnr - compute the Peack Signal to Noise Ratio
publish_html(filename, output... publish_html - publish a file to HTML format
rand_discr(p, m) rand_discr - discrete random generator
rescale(x,a,b)
snr(x,y) snr - signal to noise ratio
compile_mex.m
test_arithfixed.m
test_arithmetic_coder.m
test_convolution.m
test_filter.m
test_histo_equalization.m
test_histogram_interpolation.m
test_huffman.m
test_plot_dct.m
test_rbf_1d.m
test_rbf_2d.m
test_rle.m
test_vector_huff.m
test_vq.m
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Toolbox signal

by Gabriel Peyre

13 Jun 2004 (Updated 27 Jun 2009)

Signal processing related functions.

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File Information

Description

toobox_signal - signal processing related functions.

This toolbox contains functions related to image processing, including

* images loading and generation.
* filtering and blurring functions.
* anisotropic and spacially variant filters.
* non-linear filtering (median, LIC, bilateral).
* High Dynamic Range image loading and equalization.
* total variation image processing (denoising and decomposition).
* non-wavelets image transforms such as local DCT.

* Various helpers functions.

MATLAB release

MATLAB 7 (R14)

Tags for This File
Everyone's Tags	cosine transform, cubic thresholding, dsp, fft, image processing, signal processing
Tags I've Applied
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Comments and Ratings (2)
29 Jul 2004	vijay gupta
08 Dec 2006	Laura Vargas	I've found image_resize. Thanks

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Updates
08 May 2006	Bug fixes.
19 Jun 2006	Added arithmetic coders, RBF interpolation, best DCT basis, reorganized the toolbox.
27 Apr 2007	GPL license.
02 Sep 2007	Split between image and signal toolboxes.
25 Jun 2009	BSD Licence
27 Jun 2009	Update of Licence

Tag Activity for this File
Tag	Applied By	Date/Time
dsp	Gabriel Peyre	22 Oct 2008 07:23:49
signal processing	Gabriel Peyre	22 Oct 2008 07:23:49
image processing	Gabriel Peyre	22 Oct 2008 07:23:49
fft	Gabriel Peyre	22 Oct 2008 07:23:49
cosine transform	Gabriel Peyre	22 Oct 2008 07:23:49
cubic thresholding	Mohamed Khaled	24 Jan 2011 18:22:36

Highlights from Toolbox signal

Toolbox signal

Highlights from
Toolbox signal