plateform stringclasses 1
value | repo_name stringlengths 13 113 | name stringlengths 3 74 | ext stringclasses 1
value | path stringlengths 12 229 | size int64 23 843k | source_encoding stringclasses 9
values | md5 stringlengths 32 32 | text stringlengths 23 843k |
|---|---|---|---|---|---|---|---|---|
github | ndwork/dworkLib-master | ifftshift2.m | .m | dworkLib-master/ifftshift2.m | 670 | utf_8 | 503d6e6cda162eb7dc9d1d2b1129edfa |
function out = ifftshift2( in )
% out = ifftshift2( in )
%
% Performs ifftshift on the first two dimensions of in
%
% Inputs:
% in - input array of at least two dimensions
%
% Outputs:
% out - output array
%
% Written by Nicholas Dwork - Copyright 2021
%
% This software is offered under the G... |
github | ndwork/dworkLib-master | wavShow.m | .m | dworkLib-master/wavShow.m | 1,903 | utf_8 | fe9546a41f5972034dc5242cd9faa94d |
function imH = wavShow( wt, varargin )
% imH = wavShow( wt [, scale, 'wavSplit', wavSplit, 'range', range ] );
%
% shows the wavelet transform with individual scaling of each portion for
% improved viewing
%
% Inputs:
% img - 2D array representing the wavelet transform of the image
%
% Optional Input... |
github | ndwork/dworkLib-master | plotTriangles.m | .m | dworkLib-master/plotTriangles.m | 1,436 | utf_8 | df1146902759e65046b07e9228b9479c |
function figure = plotTriangles( triangles )
% figure = plotTriangles( triangles )
% creates shown 3D figure from given triangles
%
% Inputs:
% triangles - 3D array of size 3 x 3 x nTriangles
%
% Outputs:
% figure - 3D figure of polyhedron with triangle faces made from given
% triangle vert... |
github | ndwork/dworkLib-master | alignDicoms.m | .m | dworkLib-master/alignDicoms.m | 5,602 | utf_8 | a954da3f1e4adb40bc59f332bfa09df9 |
function [out1,out2] = alignDicoms( in1, in2, varargin )
% [out1,out2] = alignDicoms( in1, in2 [, info1, info2 ] )
%
% Shifts and scales in2 to align it with in1
%
% Inputs:
% in1 - either an image array or a character array specifying a dicom filename or a directory
% containing dicom files
% in... |
github | ndwork/dworkLib-master | homographyFromPts3D.m | .m | dworkLib-master/homographyFromPts3D.m | 1,239 | utf_8 | 7dbaa21c182b7b1c566a307e01996dae |
function H = homographyFromPts3D( pts1, pts2 )
% H = homographyFromPts3D( pts1, pts2 )
%
% Determine the homography that projects pts1 onto pts2 with the Direct
% Linear Transformation.
%
% Written by Nicholas Dwork - Copyright 2016
%
% This software is offered under the GNU General Public License 3.... |
github | ndwork/dworkLib-master | snrFromMagnitude.m | .m | dworkLib-master/snrFromMagnitude.m | 1,628 | utf_8 | 1964c98f5cabd0e83c78462f25dd72ec |
function snr = snrFromMagnitude( in, noiseCoords )
% snr = snrFromMagnitude( in, noiseCoords )
%
% Calculates the SNR of the underlying complex data with Guassian additive noise
% from the magnitude data according to "The Rician Distribution of Noisy MRI Data"
% by Gudbjartsson and Patz
%
% Inputs:
% i... |
github | ndwork/dworkLib-master | downsample2.m | .m | dworkLib-master/downsample2.m | 1,300 | utf_8 | 369c6267c6b9e07d806671024e833e68 |
function out = downsample2( img, D, varargin )
% out = downsample2( img, D [, 'S', S ] )
% Implements the adjoint of upsample2
%
% Inputs:
% img - two dimensional array
% D - downsample factor. Either a scalar (assuming same factor in both dimensions)
% or an array with two elements (one for each di... |
github | ndwork/dworkLib-master | inplaceImg.m | .m | dworkLib-master/inplaceImg.m | 2,868 | utf_8 | 3b9b919684e82a5a871524d732b51792 |
function outImg = inplaceImg( subImg, nSubRows, nSubCols, subIndx, varargin )
% outImg = inplaceImg( subImg, nSubRows, nSubCols, subIndx [, inImg, ...
% 'order', order, 'border', border, 'borderValue', borderValue ] )
%
% Inputs:
% subImg - the image to be put into the out image
% nSubRows - the number o... |
github | ndwork/dworkLib-master | rect.m | .m | dworkLib-master/rect.m | 731 | utf_8 | 9df45bfcbb503f9cd172042d8e88935c |
function out = rect( x, a )
% out = rect( x, a )
%
% outputs rect( x / a );
%
% Inputs:
% x - array of unscaled domain values
% a - either a scalar or array same size as x
%
% Outputs:
% out - array of rect values the same size as x
%
% Written by Nicholas Dwork - Copyright 2021
%
% https:/... |
github | ndwork/dworkLib-master | sigmoid.m | .m | dworkLib-master/sigmoid.m | 405 | utf_8 | 4a39ddd6f32fbd713042b11da4a0fc1c |
function out = sigmoid( x )
% out = sigmoid( x )
%
% Inputs:
% A scalar or array
%
% Written by Nicholas - Copyright 2017
%
% This software is offered under the GNU General Public License 3.0. It
% is offered without any warranty expressed or implied, including the
% implied warranties of merchant... |
github | ndwork/dworkLib-master | normalizePts2D.m | .m | dworkLib-master/normalizePts2D.m | 717 | utf_8 | 0aa3b3ddc53f1bfd3831407e178cab6c |
function [newPts,T] = normalizePts2D( pts )
% Inputs:
% pts - 2D array of size Nx2 where N is the number of points
% First/second column is x/y locations
%
% Outputs:
% newPts - pts scaled and translated so that centroid is at 0 and average
% distance from center is sqrt(2)
%
% Written by Nichola... |
github | ndwork/dworkLib-master | totalVariation.m | .m | dworkLib-master/totalVariation.m | 605 | utf_8 | 54d1a325260ce661479c4586b9af59f8 |
function out = totalVariation( in )
% out = totalVariation( in )
%
% Computes the L2L1 norm (the total variation) of in.
%
% Written by Nicholas Dwork - Copyright 2021
%
% This software is offered under the GNU General Public License 3.0. It
% is offered without any warranty expressed or implied, incl... |
github | ndwork/dworkLib-master | poissonDisc2.m | .m | dworkLib-master/poissonDisc2.m | 11,903 | utf_8 | 9909691d67edbcb80bb41800f08feae3 |
function pts = poissonDisc2( r, varargin )
% pts = poissonDisc2( r [, 'bounds', bounds, 'bIncSize', bIncSize, 'nK', nK, ...
% 'incSize', incSize, 'min_r', min_r ] )
%
% For scalar (constant) r, the algorithm implemented is "Fast Poisson Disk Sampling in
% Arbitrary Dimensions" by Robert Bridson and for a v... |
github | ndwork/dworkLib-master | makeLowFreqWavMask.m | .m | dworkLib-master/makeLowFreqWavMask.m | 1,774 | utf_8 | 38ab6012c10f3c0d2eb25c5e38f3fe7b |
function mask = makeLowFreqWavMask( sImg, varargin )
% mask = makeLowFreqWavMask( sImg [, split ] )
%
% make an array of size sImg with 1s only in the lowest frequency bins of the wavelet transform
% with recursion specified by split
%
% Inputs:
% sImg - two element array specifying the size of the image... |
github | ndwork/dworkLib-master | wavFusion.m | .m | dworkLib-master/wavFusion.m | 1,050 | utf_8 | a9187dbf6d18f765e407b14241152956 |
function fused = wavFusion( cImg, mImg )
% fused = wavFusion( cImg, mImg )
%
% Inputs:
% cImg - color or monochrome image
% mImg - monochrome image
%
% Written by Nicholas Dwork - Copyright 2016
%
% This software is offered under the GNU General Public License 3.0. It
% is offered without any warr... |
github | ndwork/dworkLib-master | scatternice.m | .m | dworkLib-master/scatternice.m | 1,386 | utf_8 | f290b9e8d86edfad06cfbca24c9532ed |
function out = scatternice( in1, in2, varargin )
% scatternice( in1 [, in2, 'ax', ax, options ] )
%
% Inputs:
% in1 - domain values to plot
% in2 - range values to plot
%
% Optional Inputs:
% ax - the axis to plot onto (used with subplot)
% options - all optional arguments that plot accepts
... |
github | ndwork/dworkLib-master | wavScale.m | .m | dworkLib-master/wavScale.m | 2,148 | utf_8 | b0b89c2a4ede9ed3bb28b9b0ec99b55e |
function out = wavScale( wt, wavSplit, varargin )
% out = wavScale( wt, wavSplit [, 'range', range ] );
%
% Applies scaleImg to each bin of the wavelet transform individually.
%
% Written by Nicholas Dwork - Copyright 2019
%
% https://github.com/ndwork/dworkLib.git
%
% This software is offered under ... |
github | ndwork/dworkLib-master | mse.m | .m | dworkLib-master/mse.m | 762 | utf_8 | 8eb916e4d845289b0b414b559db4154a |
function out = mse( est, true )
% Calculates the mean squared error of an estimate
%
% out = mse( est, true )
%
% Inputs:
% est - the array of estimate values
% true - an array of the same size as est that represents the correct values
%
% Outputs:
% out - the mean square error value
%
% Writte... |
github | ndwork/dworkLib-master | mri_findErnstAngle.m | .m | dworkLib-master/mri_findErnstAngle.m | 828 | utf_8 | 0282cfd32b5ff4d24d179882a5515fb3 |
function out = mri_findErnstAngle( T1, TR )
% out = mri_findErnstAngle( T1, TR )
% The Ernst angle is the angle for maximum signal of a GRE spoiled sequence
% See Ernst RR, Anderson WA. Application of Fourier transform spectroscopy to magnetic resonance.
% Rev Sci Instrum 1966; 37:93-102.
%
% Inputs:
... |
github | ndwork/dworkLib-master | searchStruct.m | .m | dworkLib-master/searchStruct.m | 3,356 | utf_8 | 9a0ce9b525970d14275e22b40fc913a2 |
function matches = searchStruct( in, el2Match, varargin )
% matches = searchStruct( in, el2Match [, type ] )
%
% Inputs:
% in - the input struct
% el2Match - the element to match
% If el2Match is a string, then it searches the field names.
% If el2Match is numeric, then it searches the values
%
%... |
github | ndwork/dworkLib-master | pickRandomSubset.m | .m | dworkLib-master/pickRandomSubset.m | 1,058 | utf_8 | d5402e8a654529078d7d2648cd0c4b6e |
function [ subset, complement ] = pickRandomSubset( set, nSubset )
% [ subset, complement ] = pickRandomSubset( set, nSubset )
%
% Picks a random subset from a set (and possibly identifies its complement)
%
% Inputs:
% set - an array that is the set to select from
% nSubset - the number of elements in t... |
github | ndwork/dworkLib-master | whitenData.m | .m | dworkLib-master/whitenData.m | 1,723 | utf_8 | 000d611f997d924baf726e09524ba4e3 |
function out = whitenData( data, covMatrix, varargin )
% out = whitenData( data, covMatrix [, type ] )
%
% Assumes data is zero mean
%
% Inputs:
% data - a multidimensional array; it is assumed that the last dimension
% is the random vector dimension
% covMatrix - a covariance matrix
%
% Optional... |
github | ndwork/dworkLib-master | mri_reconRoemer.m | .m | dworkLib-master/mri_reconRoemer.m | 1,202 | utf_8 | c8765a560204d876ddfa57a01ce392d0 |
function [recon,sMaps] = mri_reconRoemer( coilRecons, varargin )
% [recon,sMaps] = mri_reconRoemer( coilRecons )
%
% Perform an optimal coil combination according to equation [32] of
% "NMR Phased Array" by Roemer et al.
%
% Inputs:
% coilRecons is an array of size ( Ny, Nx, ..., nCoils ) of kSpace value... |
github | ndwork/dworkLib-master | shearImg.m | .m | dworkLib-master/shearImg.m | 1,033 | utf_8 | 6bdcf21da24eecd9f9b931913a8a2a5b |
function out = shearImg( in, theta, dim )
% out = shearImg( in, theta [, dim] )
%
% shears the image along dimension dim
%
% Inputs:
% in - 2D array
% theta - rotation angle in radians
%
% Optional Inputs:
% dim - index of dimension to shear
%
% Written by Nicholas Dwork - Copyright 2016
%
... |
github | ndwork/dworkLib-master | findColorChannelWeights.m | .m | dworkLib-master/findColorChannelWeights.m | 980 | utf_8 | 88f1534f0fb711b902b94815c54f49c0 |
function w = findColorChannelWeights( M, C, varargin )
% w = findColorChannelWeights( M, C [, 'objective', objective ] )
%
% Find w such that M = sum w(i) * C(:,:,i)
%
% Inputs:
% M - monochrome image
% C - color image
%
% Optional Inputs:
% objective - either 'L2' or 'L1'
%
% Written by Nichol... |
github | ndwork/dworkLib-master | epgGrad.m | .m | dworkLib-master/epgGrad.m | 589 | utf_8 | 47060c12c9f3d42aa2df75529505f7cb |
function Qout = epgGrad( Qin, n )
% Qin is an 3xN array representing the magnetization state
% The rows are F+, F-, and Z
% N is the number of Fourier coefficients to store
% n is 1 / -1 for a positive / negative gradient
Qout = Qin;
if abs(n)~=1, error('n must be 1 or -1'); end;
if n>0
Qout(1,... |
github | ndwork/dworkLib-master | proxConjL2L1.m | .m | dworkLib-master/proxConjL2L1.m | 992 | utf_8 | db7d39bfba64fff859ad1d0559bda650 |
function out = proxConjL2L1( x, sigma, t )
% out = proxConjL2L1( x, sigma, t )
%
% Calculates the proximal operator of sigma times the conjugate
% of f(x) = t * L2L1( x )
%
% Inputs:
% x - an N Dimensional array where the last dimension represents the groups
% sigma - scaling of proximal operator
% t... |
github | ndwork/dworkLib-master | lsqrTikhonov.m | .m | dworkLib-master/lsqrTikhonov.m | 1,451 | utf_8 | e3b7ae4d52ba2983661aeddbdf131565 |
function out = lsqrTikhonov( A, b, gamma, varargin )
% out = lsqrTikhonov( A, b, gamma )
%
% Uses lsqr to solve the following optimization problem:
% minimize || A x - b ||_2^2 + gamma || x ||_2^2
%
% Inputs:
% A - matrix
% b - vector
% gamma - scalar regularization paramter
% All inputs accepted b... |
github | ndwork/dworkLib-master | findRotWithPCC.m | .m | dworkLib-master/findRotWithPCC.m | 1,417 | utf_8 | dfa3ce4a155f45829f2f882c04f33014 |
function rotation = findRotWithPCC( img1, img2, varargin )
% rotation = findRotWithPCC( img1, img2 [, 'dTheta', dTheta] )
% Note: rotation must be -pi/2 and pi/2
%
% Inputs:
% dTheta - resolution of rotation angle (default is 1/180*pi radians)
%
% Output:
% rotation - counterclockwise rotation to appl... |
github | ndwork/dworkLib-master | ssim.m | .m | dworkLib-master/ssim.m | 1,644 | utf_8 | fd0485f824c3d20794702a025aba9efd |
function out = ssim( in1, in2, varargin )
% out = ssim( in1, in2 [, 'k1', k1, 'k2', k2, 'L', L ] )
%
% Computes the structural similarity metric between inputs 1 and 2 according
% to "Image Quality Assessment: From Error Visibility to Structural
% Similarity" by Wang et al.
%
% Inputs:
% in1 - the firs... |
github | ndwork/dworkLib-master | nucNorm.m | .m | dworkLib-master/nucNorm.m | 572 | utf_8 | 4f96b52b34fb83adc415611954c8d665 |
function out = nucNorm( in )
% out = nucNorm( in )
%
% Computes the nuclear norm of the input. The nuclear norm is the input
% of the singular values of the matrix.
%
% Written by Nicholas Dwork - Copyright 2019
%
% https://github.com/ndwork/dworkLib.git
%
% This software is offered under the GNU ... |
github | ndwork/dworkLib-master | makeCoordinateImgs.m | .m | dworkLib-master/makeCoordinateImgs.m | 701 | utf_8 | 58cf79f749b7fdbcd0938e80e3238dac |
function [xImg,yImg] = makeCoordinateImgs( sImg, center )
% makes an image where each point represents the distance from the center
%
% [xImg,yImg] = makeCoordinateImgs( sImg [, center] )
%
% Inputs:
% sImg - 2 element array specifying the (y,x) size of the image
% center - 2 element array specifying the... |
github | ndwork/dworkLib-master | withinTriangle.m | .m | dworkLib-master/withinTriangle.m | 1,796 | utf_8 | 9b926ab287010ae814f258e99a1b0bb2 |
function status = withinTriangle( triangle, p )
% status = withinTriangle( triangle, p )
% determines if a given number of points is within a triangle
%
% Inputs:
% triangle - 2D array with 2 rows and n columns consisting of triangle
% vertex coordinates
% p - 2D array with 2 rows and n columns of poin... |
github | ndwork/dworkLib-master | ispositive.m | .m | dworkLib-master/ispositive.m | 609 | utf_8 | b7d8124cf8e42668927fa1c24a25d6f7 |
function out = ispositive( x )
% out = ispositive( x )
%
% Inputs:
% x - a scalar or array
%
% Output:
% true if all elements of x are positive and false otherwise
%
% Written by Nicholas Dwork - Copyright 2019
%
% https://github.com/ndwork/dworkLib.git
%
% This software is offered under the ... |
github | ndwork/dworkLib-master | mri_gridRecon.m | .m | dworkLib-master/mri_gridRecon.m | 1,200 | utf_8 | 6f575f15b8a524ec87526f4c06f560f1 |
function recons = mri_gridRecon( kData, trajs, sImg, varargin )
% recons = mri_gridRecon( kData, trajs, sImg [, 'alpha', alpha, 'W', W, 'nC', nC, ...
% 'weights', weights, 'verbose', verbose ] )
%
% Performs a gridding recon for each coil
%
% Inputs:
% kData - A complex N x C x D1 x D2 x ... x DN array... |
github | ndwork/dworkLib-master | proxL2Sq.m | .m | dworkLib-master/proxL2Sq.m | 1,358 | utf_8 | bbdf8086fe013e61459be59066bf6285 |
function out = proxL2Sq( v, t, b, A )
% out = proxL2Sq( v, t, b, A )
%
% Evaluate the proximal operator of tf where f(x) = t/2 || A x - b ||_2^2
%
% Inputs:
% x - the argument of the proximal operator
% Note: could be a scalar or multi-dimensional array
%
% Optional Inputs:
% t - scaling of the... |
github | ndwork/dworkLib-master | titlenice.m | .m | dworkLib-master/titlenice.m | 706 | utf_8 | 1dde6e04f29a75430f13706e0bd9cdcb |
function titlenice( myTitle, varargin )
% titlenice( myTitle, varargin )
%
% Inputs:
% myTitle - String to name the graphic as well as the figure
%
% Optional Inputs:
% varargin - all optional inputs accepted by title function
%
% Written by Nicholas Dwork - Copyright 2018
%
% https://github.com/... |
github | ndwork/dworkLib-master | columnize.m | .m | dworkLib-master/columnize.m | 424 | utf_8 | a1b09143456b88721adf9c9b443fe06a |
function out = columnize( in )
% Return in array as a column vector
%
% Written by Nicholas Dwork, Copyright 2021
%
% https://github.com/ndwork/dworkLib.git
%
% This software is offered under the GNU General Public License 3.0. It
% is offered without any warranty expressed or implied, including the
... |
github | ndwork/dworkLib-master | pdhgAdaptive.m | .m | dworkLib-master/pdhgAdaptive.m | 6,005 | utf_8 | 24b61f4bec60e646ed4d88085bfd57e8 |
function [xStar,objValues] = pdhgAdaptive( x, proxf, proxgConj, tau, varargin )
% [xStar,objValues] = pdhgAdaptive( x, proxf, proxgConj, tau [, ...
% 'alpha0', alpha0, 'eta', eta, 'Delta', Delta', 's', s, ... % adaptive variables
% 'beta', beta', 'gamma', gamma, % backtracking parameters
% 'A', A, 'f', ... |
github | ndwork/dworkLib-master | movePointsToGrid.m | .m | dworkLib-master/movePointsToGrid.m | 1,981 | utf_8 | 6c5791e973c8249043fc253c99dbbbba |
function [griddedPts,samples] = movePointsToGrid( pts, mins, maxs, Ns )
% [griddedPts,samples] = movePointsToGrid( pts, mins, maxs, Ns )
%
% Moves points in an Real^N space to the points specified by grid
%
% Inputs:
% pts - a NxM array (where M is the number of points)
% mins - a 1D array of size N spec... |
github | ndwork/dworkLib-master | denoiseTV.m | .m | dworkLib-master/denoiseTV.m | 861 | utf_8 | e3a0082eec5f2d83607818f2854f723e |
function [out,oValues] = denoiseTV( in, lambda, varargin )
% out = denoiseTV( in, lambda [, varargin ] )
%
% perform total variation denoising on the input
%
% Inputs:
% in - input array to be denoised
% lambda - the regularization parameter
%
% Optional Inputs:
% varargin - the same optional param... |
github | ndwork/dworkLib-master | makeEllipticalImage.m | .m | dworkLib-master/makeEllipticalImage.m | 1,486 | utf_8 | c31a34a3c1d71a6f753443d3ba131139 |
function out = makeEllipticalImage( sImg, varargin )
% out = makeEllipticalImage( sImg, [ rx, ry, rot ] )
%
% Creates an elliptical image. The zero-levelset is where
% x^2/rx + y^2/ry = 1
%
% Inputs:
% sImg - two element array specifying the size of the image [Ny,Nx]
% rx - the length of the semimajo... |
github | ndwork/dworkLib-master | findPeaks.m | .m | dworkLib-master/findPeaks.m | 1,698 | utf_8 | 2a00d43514ae12e357444ecf86dfd417 |
function corners = findPeaks( img, varargin )
% corners = findPeaksCorners( img [, N, 'buffer', buffer ] )
%
% Inputs:
% img - a 2D array
% N - the number of features to identify (default is 50)
% buffer - the minimum spacing between features (default is 20)
%
% Outputs:
% corners - an Nx2 array. Th... |
github | ndwork/dworkLib-master | plotBlandAltman.m | .m | dworkLib-master/plotBlandAltman.m | 1,805 | utf_8 | 21436ac1b661ab9c7520260a70709658 |
function plotBlandAltman( x, y, varargin )
% plotBlandAltman( x, y [, 'range', range ] )
%
% Inputs:
% x - array
% y - array of same size as x
%
% Optional Inputs:
% range - either 'nice' or an argument that is passed into axis command
% By default, all data is shown
%
% Written by Nicholas Dwo... |
github | ndwork/dworkLib-master | alignImagesWithHomography.m | .m | dworkLib-master/alignImagesWithHomography.m | 1,075 | utf_8 | 283ec1ed1df76773804357ccc8fd2f8e |
function proj2 = alignImagesWithHomography( img1, img2, varargin )
% proj2 = alignVolumesWithHomography( img1, img2 [, distThresh] )
%
% This function aligns img2 with img1 using a Homography.
% The algorithm it employs is to:
% - find features in img1 with Difference of Gaussians
% - track features in... |
github | ndwork/dworkLib-master | readOldMriDataOrgData.m | .m | dworkLib-master/readOldMriDataOrgData.m | 876 | utf_8 | 16533ce3e7174e851a9408019646d87f |
function data = readOldMriDataOrgData(filenameBase)
% function data = readReconData(filenameBase)
%
% Read in recon data stored in filenameBase.cfl (complex float)
% based on dimensions stored in filenameBase.hdr.
% Taken from old.mridata.org
dims = readReconHeader( filenameBase );
filename = strcat(fi... |
github | ndwork/dworkLib-master | volVectorProd.m | .m | dworkLib-master/volVectorProd.m | 898 | utf_8 | ee075b25884b7794a767d3fd31b6bfc7 |
function out = volVectorProd( volume, vector, dim )
% This function performs a volume-vector product
%
% out = volVectorProd( volume, vector [, dim ] )
%
% Inputs:
% volume - an array
% vector - a 1D array with number of elements equal to dimension of
% vector product
%
% Optional Input:
% dim ... |
github | ndwork/dworkLib-master | stemnice.m | .m | dworkLib-master/stemnice.m | 2,601 | utf_8 | 40c68cb9e04c2728a1cabcc233051492 |
function out = stemnice( in1, varargin )
% out = stemnice( in1 [, in2, 'ax', ax, options ] )
%
% Inputs:
% in1 - 1D array to stem plot
% in2 - if in2 is supplied, in1 are the domain values and in2 are the
% range values
%
% Optional Inputs:
% ax - the axis to plot onto (used with subplot)
... |
github | ndwork/dworkLib-master | announceCompletion.m | .m | dworkLib-master/announceCompletion.m | 1,829 | utf_8 | 9585e8bb04d4a56fb6e285f2ab6bfbbc |
function announceCompletion( varargin )
% announceCompletion( [ 'earlyTime', earlyTime, 'lateTime', lateTime ] )
%
% This function makes an audible sound when the function is called.
% Intended to be run at the end of the program to let you know it's done.
%
% Inputs:
% earlyTime - specified as hh:mm 24 ... |
github | ndwork/dworkLib-master | applyCT_2D.m | .m | dworkLib-master/applyCT_2D.m | 1,719 | utf_8 | f5bea13ce1fdc7db0527837e4d0d2aa8 |
function out = applyCT_2D( f, domTraj, rangeTraj, kCy, kCx, Cy, Cx )
% out = applyCT_2D( f, domTraj, N, kCy, kCx, Cy, Cx )
% or
% out = applyCT_2D( f, N, rangeTraj, kCy, kCx, Cy, Cx )
% or
% out = applyCT_2D( f, domTraj, rangeTraj, kCy, kCx, Cy, Cx )
%
% Applies a continuous circular convolution of a ker... |
github | ndwork/dworkLib-master | proxL1Complex.m | .m | dworkLib-master/proxL1Complex.m | 1,160 | utf_8 | 370e2797ce47495734aaeac1c39b3520 |
function out = proxL1Complex( in, thresh, weights )
% out = proxL1Complex( in, thresh [, weights ] )
%
% Returns the proximal operator of f(x) = thresh * L1( x ), where
% x is a complex vector.
%
% Inputs:
% in - an array of complex values
% thresh - the thresholding value
%
% Optional Inputs:
... |
github | ndwork/dworkLib-master | makeDftMatrix.m | .m | dworkLib-master/makeDftMatrix.m | 1,173 | utf_8 | 1d9be1cdb454750405e8721a42a1a294 | % This software is offered under the GNU General Public License 3.0. It
% is offered without any warranty expressed or implied, including the
% implied warranties of merchantability or fitness for a particular
% purpose.
function out = makeDftMatrix( M, varargin )
% Make the (potentially non-square) DFT matrix o... |
github | ndwork/dworkLib-master | proxConjNucNorm.m | .m | dworkLib-master/proxConjNucNorm.m | 905 | utf_8 | 67decd67c4df7071e72781ca91d6c5f7 |
function out = proxConjNucNorm( in, sigma, t )
% out = proxConjNucNorm( in, t )
%
% Returns the proximal operator of the conjugate of f(X) = t || X ||_*
% where X is the input matrix.
%
% Inputs:
% in - an input matrix
% t - the thresholding value
%
% Written by Nicholas Dwork - Copyright 2019
%
... |
github | ndwork/dworkLib-master | calcErgasMetric.m | .m | dworkLib-master/calcErgasMetric.m | 1,623 | utf_8 | c6f96ce20d9d0a0d352fec031c6b7fe4 |
function ergas = calcErgasMetric( color, monochrome, fused, varargin )
% ergas = calcErgasMetric( color, monochrome, fused, varargin )
%
% Inputs:
% color - an MxNx3 array, where the third dimension represents color
% monochrome - an MxN array
% fused - an MxNx3 array representing the fused image
%
% O... |
github | ndwork/dworkLib-master | ctIRadon.m | .m | dworkLib-master/ctIRadon.m | 3,298 | utf_8 | 671599f34269894684db853ab8a956cb |
function out = ctIRadon( sinogram, thetas, dSize, cx, cy, Nx, Ny, dx, dy, varargin )
% out = ctIRadon( sinogram, thetas, dSize, cx, cy, Nx, Ny, dx, dy [, ...
% 'window', 'Hanning/none', 'type', 'iso/fast' ] )
%
% Performs discrete inverse Radon transform with physical units of a Computed
% Tomography... |
github | ndwork/dworkLib-master | scaleImg.m | .m | dworkLib-master/scaleImg.m | 2,664 | utf_8 | 186d35b351283956d4d71d75a11f120f |
function out = scaleImg( img, varargin )
% out = scaleImg( img [, outMinMax, inMinMax ] )
%
% Function scaled image affinely so that inMinMax is scaled to outMinMax.
% If img is complex, it scales the magnitude.
%
% Inputs:
% outMinMax - 2 element array specifying output min and max
% or an array fro... |
github | ndwork/dworkLib-master | flipAboutIndx.m | .m | dworkLib-master/flipAboutIndx.m | 974 | utf_8 | 496386a9954108cff77e273a48b9504e |
function out = flipAboutIndx( in, indx )
% out = flipAboutIndx( in, indx )
%
% Flips the array in about the location of indx
%
% Inputs:
% in - array (may be multi-dimensional)
% indx - a 1D array specifying the index for each dimension of in
% Note: if an element of indx is 0, the array is not flip... |
github | ndwork/dworkLib-master | iGrid_2D.m | .m | dworkLib-master/iGrid_2D.m | 2,680 | utf_8 | 289194f9c4f2a061e3ddae521ca9ed5f |
function F = iGrid_2D( data, traj, varargin )
% F = iGrid_2D( data, traj, [ 'alpha', alpha, 'W', W, 'nC', nC ] )
%
% Inverse Gridding based on EE369C notes by John Pauly and Beatty et. al., IEEE TMI, 2005
% Definitions and details according to http://nicholasdwork.com/tutorials/dworkGridding.pdf
%
% Inputs... |
github | ndwork/dworkLib-master | findFractionAboveValue.m | .m | dworkLib-master/findFractionAboveValue.m | 157 | utf_8 | a03ca7342381bb86cac2ecb278c198af |
function value = findFractionAboveValue( data, fraction )
error( 'This function has been deleted. Please use findValueBelowFraction instead.' );
end
|
github | ndwork/dworkLib-master | computeGradient.m | .m | dworkLib-master/computeGradient.m | 1,807 | utf_8 | a5d089ec7a4b4de86a25763f9fad484b |
function out = computeGradient( in, varargin )
% out = computeGradient( in [, op ] ] )
%
% This function computes the gradient (or the derivative) of the input
% with circular boundary conditions
%
% Inputs:
% in - a multi-dimensional array
%
% Optional Inputs:
% op - either 'transp' or 'notransp' ... |
github | ndwork/dworkLib-master | rotateAndTranslateImg.m | .m | dworkLib-master/rotateAndTranslateImg.m | 1,078 | utf_8 | bcf81303fc5383610b3266c0ec77653b |
function out = rotateAndTranslateImg( R, t, img, varargin )
% out = rotateAndTranslateImg( R, t, img [, extrapVal] )
%
% Inputs:
% R - a 2x2 rotation matrix
% t - a two element array specifying translation in pixels
% img - a 2D array
%
% Optional Inputs:
% extrapVal - value to put where extrapolatio... |
github | ndwork/dworkLib-master | makeCrossProdMatrix.m | .m | dworkLib-master/makeCrossProdMatrix.m | 658 | utf_8 | d4c8f43db64c6e5abe3842bf5790fdb1 |
function out = makeCrossProdMatrix( v )
% out = makeCrossProdMatrix( v )
%
% makes the cross product matrix out so that cross(v,u) = out * u
%
% Inputs:
% v - a 3 elements array
%
% Outputs:
% out - a 3x3 matrix
%
% Written by Nicholas Dwork - Copyright 2016
%
% This software is offered under... |
github | ndwork/dworkLib-master | iwtHaar2.m | .m | dworkLib-master/iwtHaar2.m | 2,481 | utf_8 | e48c76b5f933b4d3865a33f2ed45d501 |
function img = iwtHaar2( wt, varargin )
% img = iwtHaar2( wt[, split] );
% Performs an inverse Haar wavelet transform of an image
%
% Inputs:
% img - 2D array representing the wavelet transform of the image
%
% Optional Inputs:
% split - array specifying the number of levels of the wavelet transform.
... |
github | ndwork/dworkLib-master | normalizePts3D.m | .m | dworkLib-master/normalizePts3D.m | 791 | utf_8 | 18827dbd4e0df1b7361e83af3fa03c73 |
function [newPts,T] = normalizePts3D( pts )
% Inputs:
% pts - 2D array of size Nx3 where N is the number of points
% First/second/third column is x/y/z locations
%
% Outputs:
% newPts - pts scaled and translated so that centroid is at 0 and average
% distance from center is sqrt(2)
%
% Written by... |
github | ndwork/dworkLib-master | namePlottedPoints.m | .m | dworkLib-master/namePlottedPoints.m | 1,531 | utf_8 | a0b80754aa9b321ec636954f6ada7c92 |
function namePlottedPoints( x, y, names, varargin )
% namePlottedPoints( x, y, names [, dx, dy, options ] )
% Names individual points in a plot; this function can be used with plot
% or scatter.
%
% Inputs:
% x - the domain values that were plotted
% y - the range values that were plotted
% names - a ... |
github | ndwork/dworkLib-master | opticalFlow3D.m | .m | dworkLib-master/opticalFlow3D.m | 14,906 | utf_8 | 5a0d4b027af981556fe0bfb4bcfced12 |
function [du,dv,dw] = opticalFlow3D( data1, data2, varargin )
% [du,dv,dw] = opticalFlow3D( data1, data2 [, 'eta', eta, 'rho', rho ] )
%
% Determines the Horn Schunck optical flow vectors using ADMM
%
% Inputs:
% data1/data2 - 3D arrays. Optical flow vectors will point from voxels
% in data1 to voxels... |
github | ndwork/dworkLib-master | indicatorFunction.m | .m | dworkLib-master/indicatorFunction.m | 885 | utf_8 | 83f0bf9b69f5511eaf3497992782b488 |
function out = indicatorFunction( in, S )
% out = indicatorFunction( in, S )
%
% outputs 0 if all the elments of the input are within S and Inf otherwise
%
% Inputs:
% in - an array (of any size)
% S - A two element array specifying the interval for the indicator function
% If a single sided bound ... |
github | ndwork/dworkLib-master | quarticRoots.m | .m | dworkLib-master/quarticRoots.m | 2,403 | utf_8 | f172b01c0b21b5b4d926ae9f415da158 |
function roots = quarticRoots( poly, a, b, c, d )
% roots = quarticRoots( a, b, c, d, e ) or
% roots = quarticRoots( b, c, d, e ) or
% roots = quarticRoots( p )
%
% Solves problems of the form: a x^4 + b x^3 + c x^2 + d x + e = 0
% Based on "An analytic solution to Wahba's problem" by Yang and Zhou
%
... |
github | ndwork/dworkLib-master | vecVolMatrixProd.m | .m | dworkLib-master/vecVolMatrixProd.m | 689 | utf_8 | 8d8b0215339962b33ff7cb81a53fd6f3 |
function out = vecVolMatrixProd( vec, vol )
% Each slice of vol is a matrix that will be left multiplied a row vector
%
% Inputs:
% vec - an 1xM array that left multiplies each slice of vol
% vol - an MxNxK array where vol(:,:,k) left multiplies vec
%
% Outputs:
% out - an Mx1xK array
%
% Written b... |
github | ndwork/dworkLib-master | evaluatePoly2.m | .m | dworkLib-master/evaluatePoly2.m | 1,097 | utf_8 | b1bae7b3442afdcb18e74e244035ecae |
function p = evaluatePoly2( c, x, y )
% p = evaluatePoly2( c, x, y )
%
% This function evaluates the 2D polynomial defined by coefficients in c
% at points (x,y).
%
% Inputs:
% x - 1D array of values
% y - 1D array of values
%
% Outputs:
% p = a 2 dimensional array of polynomial coefficients.
%... |
github | ndwork/dworkLib-master | projectImage.m | .m | dworkLib-master/projectImage.m | 1,278 | utf_8 | b0c46066c9ce51ceffb86766dbe7daac |
function out = projectImage( img, H, varargin )
% out = projectImageWithHomography( img, H, [ range ] )
%
% Inputs:
% img - a 2D array (or a 3D array where the third dimension is color) of
% data to project
% H - the 3x3 homography
%
% Optional Inputs:
% range - An optional 4D array specifying the ... |
github | ndwork/dworkLib-master | iwtDaubechies2.m | .m | dworkLib-master/iwtDaubechies2.m | 3,644 | utf_8 | a420341594b9b7d8cb8d1bb24cb41b4b |
function img = iwtDaubechies2( wt, varargin )
% img = iwtDaubechies2( wt[, split] );
% Performs an inverse Daubechies wavelet transform of an image (with circular boundary conditions)
%
% Inputs:
% img - 2D array representing the wavelet transform of the image
%
% Optional Inputs:
% split - array speci... |
github | ndwork/dworkLib-master | wtDaubechies2.m | .m | dworkLib-master/wtDaubechies2.m | 4,176 | utf_8 | 7e4d7b0e0faa011b96b6eae8d37c7230 |
function wt = wtDaubechies2( img, varargin )
% wt = wtDaubechies2( sig [, split] );
%
% Performs a Daubechies wavelet transform of an image (with circular boundary conditions)
% Based on the Wikipedia page on the Daubechies wavelet transform and
% (http://wavelets.pybytes.com/wavelet/db2/)
%
% Inputs:
... |
github | ndwork/dworkLib-master | ufft2.m | .m | dworkLib-master/ufft2.m | 727 | utf_8 | 8018f90b1b15159de895b06b44e83737 |
function out = ufft2( in )
% out = ufft2( in )
%
% Compute the two-dimensional unitary fft of
% the first two dimensions of in
%
% Written by Nicholas Dwork, Copyright 2019
%
% https://github.com/ndwork/dworkLib.git
%
% This software is offered under the GNU General Public License 3.0. It
% is ... |
github | ndwork/dworkLib-master | insertValueIntoOrderedArray.m | .m | dworkLib-master/insertValueIntoOrderedArray.m | 1,312 | utf_8 | 327173155ddc12b4cca55824d20c2ed5 |
function newArray = insertValueIntoOrderedArray( array, value )
% newArray = insertValueIntoOrderedArray( array, value )
%
% Insert a new value into an ordered array so that the new array remains
% ordered.
% If the value already exists in the array, nothing is inserted
%
% Inputs:
% array - a 1D (colu... |
github | ndwork/dworkLib-master | logBase.m | .m | dworkLib-master/logBase.m | 565 | utf_8 | 21698c5418fcd7666b3eadb13bb807cc |
function out = logBase( in, base )
% out = logBase( in, base )
%
% Compute the log to an arbitrary base
%
% Inputs:
% in - an array of values
% base - the base of the logarithm
%
% Written by Nicholas Dwork - Copyright 2020
%
% https://github.com/ndwork/dworkLib.git
%
% This software is offer... |
github | ndwork/dworkLib-master | makeEdgeMask.m | .m | dworkLib-master/makeEdgeMask.m | 923 | utf_8 | 3e223b2652f7aaa1ab16933eca1253b7 |
function mask = makeEdgeMask( sz, edge )
% mask = makeEdgeMask( sz, edge )
%
% Inputs:
% sz - two element vector specifying the size of the output image mask
% edge - either a scalar specifying number of pixels in edge or a two
% element array specifying the size of the edge in each dimension.
%
% O... |
github | ndwork/dworkLib-master | huber.m | .m | dworkLib-master/huber.m | 677 | utf_8 | 43b5af2e41d75564a2b91225b333aceb |
function out = huber( in, mu )
% out = huber( in, mu )
%
% Calculates the Huber penalty loss of in
%
% Inputs:
% in - a 1D array
% mu - the scalar Huber parameter
%
% Written by Nicholas Dwork - Copyright 2021
%
% This software is offered under the GNU General Public License 3.0. It
% is offer... |
github | ndwork/dworkLib-master | evalLaplacePDF.m | .m | dworkLib-master/evalLaplacePDF.m | 1,352 | utf_8 | ff56d770c5f2167a5047e3f3608c0a93 |
function out = evalLaplacePDF( x, varargin )
% out = evalLaplacePDF( x [, 'LMean', LMean, 'LVar', LVar, 'LSig', LSig ] )
%
% Evaluation the Laplace distribution at specific domain values
%
% Inputs:
% x - an array of evaluation points
%
% Optional Inputs:
% LMean - a 1D array or scalar specifying th... |
github | ndwork/dworkLib-master | fft2h.m | .m | dworkLib-master/fft2h.m | 588 | utf_8 | 8db99f43197a35946445183efa5735ee |
function out = fft2h( in )
% out = fft2h( in )
%
% Compute the adjoint of the two dimensional fft
%
% Written by Nicholas Dwork, Copyright 2022
%
% https://github.com/ndwork/dworkLib.git
%
% This software is offered under the GNU General Public License 3.0. It
% is offered without any warranty exp... |
github | ndwork/dworkLib-master | downsize2.m | .m | dworkLib-master/downsize2.m | 1,473 | utf_8 | f8477182e36cfee1196950711955fa8b |
function out = downsize2( img, newSize, varargin )
% Does nearest neighbor interpolation for image downsizing
%
% out = downsize2( img, newSize [, op ] )
%
% Inputs:
% img - 2D array
% newSize - two element array specifying new size of image
%
% Optional Inputs:
% op - either 'transp' or 'notransp'... |
github | ndwork/dworkLib-master | randRician.m | .m | dworkLib-master/randRician.m | 1,157 | utf_8 | 60e915ab0fbc84557f0435967a496ae7 |
function out = randRician( rNu, rSig, varargin )
% Generate a Rician distribution with parameters rNu and rSig according to
% https://en.wikipedia.org/wiki/Rice_distribution#Related_distributions
%
% out = randRician( rNu, rSig [, theta ] )
%
% Inputs:
% rNu - a single element or an array parameterizing ... |
github | ndwork/dworkLib-master | epgTest.m | .m | dworkLib-master/epgTest.m | 201 | utf_8 | caaa8eaa4c4f6ffb2d68b97ddc605f0c |
function epgTest
t = 50;
T1 = 1000;
T2 = 200;
alpha = 35;
Q = zeros(3, 10);
Q(3,1) = 1;
Q = epgRF( Q, alpha );
Q = epgGrad( Q, 3 );
Q = epgRelax( Q, t, T1, T2 );
disp(Q);
end
|
github | ndwork/dworkLib-master | csReconLASSO.m | .m | dworkLib-master/csReconLASSO.m | 10,301 | utf_8 | 5f88b2528e8d32073a1908d9f6aa50b1 |
function [recon,oValues,lambda] = csReconLASSO( samples, varargin )
% recon = csReconLASSO( samples [, 'lambda', lambda, 'nIter', nIter, 'nReweightIter', nReweightIter, ...
% 'printEvery', printEvery, 'transformType', transformType, 'verbose', verbose, ...
% 'waveletType', waveletType, 'w', w, 'wavSplit', wa... |
github | ndwork/dworkLib-master | cube2Gif.m | .m | dworkLib-master/cube2Gif.m | 2,052 | utf_8 | d06f2a85043e4973cf6305be2930e71d |
function cube2Gif( cube, varargin )
% cube2Gif( cube, [ outFile, delayTime, 'dim', dim, 'loopCount', loopCount ] )
%
% This function converts a 3D array of data into a gif. The third dimension
% is converted into the temporal dimension.
%
% Inputs:
% cube - a 3D array. The dynamic range of cube must b... |
github | ndwork/dworkLib-master | fista_wLS.m | .m | dworkLib-master/fista_wLS.m | 7,622 | utf_8 | a4226a92afa7a042713b2daef584c7c0 |
function [xStar,objectiveValues,relDiffs] = fista_wLS( x, g, gGrad, proxth, varargin )
% [xStar,objValues,relDiffs] = fista_wLS( x, g, gGrad, proxth [, ...
% 'h', h, 'innerProd', innerProd, 'minStep', minStep, 'N', N, 'r', r, 's', s, 't0', t0, ...
% 'restart', true/false, 'tol', tol, 'verbose', verbose ] )
... |
github | ndwork/dworkLib-master | volVolMatrixProd.m | .m | dworkLib-master/volVolMatrixProd.m | 1,303 | utf_8 | b5b1ffb3571ca07c76370649286774ab |
function out = volVolMatrixProd( A, B )
% out = volVolMatrixProd( A, B )
%
% Matrix multiplies each slice of A by each slice of B
%
% Inputs:
% A - Either a 3D array or a 2D array.
% If a 2D array, each row is considered a matrix multiply
% B - Either a 3D array or a 2D array.
% If a 2D array... |
github | ndwork/dworkLib-master | makeKbKernel.m | .m | dworkLib-master/makeKbKernel.m | 2,281 | utf_8 | 952425b7e720590f4c5c78298a2da241 |
function [kC,C,c] = makeKbKernel( G, varargin )
% [kc,C,c] = makeKbKernel( G, [, N, 'alpha', alpha, 'W', W, 'nC', nC ] )
%
% This function makes the Kaiser Bessel kernel; this kernel is a
% fundamental part of the Gridding (and inverse Gridding) algorithm.
% Consider reviewing "Selection of a Convolution Fu... |
github | ndwork/dworkLib-master | fitLineToData.m | .m | dworkLib-master/fitLineToData.m | 673 | utf_8 | 130fe96d0e223f83164032c85ab811a6 |
function [m,b] = fitLineToData( x, y )
% [m,b] = fitLineToData( x, y ) or
% [m,b] = fitLineToData( y )
%
% This function finds m and b so that ||y-(mx+b)||_2 is minimized
%
% Inputs:
% x - (optional) domain values
% y - range values
%
% Written by Nicholas Dwork - Copyright 2016
%
% This softwa... |
github | ndwork/dworkLib-master | mri_doubleAngleMapB1.m | .m | dworkLib-master/mri_doubleAngleMapB1.m | 5,068 | utf_8 | ffe034f0eac98973577002f47a9938f6 |
function b1ScaleMap = mri_doubleAngleMapB1( dataCube, sliceThickness, varargin )
% b1ScaleMap = mri_doubleAngleMapB1( dataCube, sliceThickness [, angles, 'mask', mask, 'alg', alg, ...
% 'verbose', verbose' ] )
%
% Performs double angle B1 mapping
%
% Inputs:
% dataCube - a 3D array of size MxNx2. The ... |
github | ndwork/dworkLib-master | restart.m | .m | dworkLib-master/restart.m | 1,529 | utf_8 | bd585bde5792487af31c8e4a017be038 |
function restart( varargin )
% restart
%
% closes all windows, clears variables, clears the command window, ends debug
% mode, and deletes any parforProgess files that were created by the current
% instance of Matlab
%
% Written by Nicholas Dwork - Copyright 2017
%
% https://github.com/ndwork/dworkLi... |
github | ndwork/dworkLib-master | ctFan2Para.m | .m | dworkLib-master/ctFan2Para.m | 1,823 | utf_8 | 02d8ffcc5fd628aee4e61e9fa76ca04e |
function out = ctFan2Para( sinogram, gammas, betas, d, oThetas, oLines )
% out = ctFan2Para( sinogram, gammas, betas, d, oThetas, oLines )
%
% Interpolates a sinogram created by a fan projection into a parallel projection
% sinogram using physical units of a computed tomography detector
%
% Inputs:
... |
github | ndwork/dworkLib-master | mri_makeRF.m | .m | dworkLib-master/mri_makeRF.m | 1,453 | utf_8 | c4221b3117bbaaab30efe54d3863e1d5 |
function R = mri_makeRF( alphas, phis )
% R = mri_makeRF( alphas, phis )
% determine the tip-angle rotation matrix applied to (Mx,My,Mz)
%
% Inputs:
% alphas - the tip angles in radians
%
% Optional Inputs:
% phis - the phases of the RF pulse in radians (default is 0)
%
% Outputs:
% the 3x3 rotat... |
github | ndwork/dworkLib-master | gridT_2D.m | .m | dworkLib-master/gridT_2D.m | 1,467 | utf_8 | e115d724c84a79a1f7c6c3e6c0f220c7 |
function out = gridT_2D( in, traj, weights, varargin )
% out = gridT_2D( in, traj, weights, [ 'alpha', alpha, 'W', W, 'nC', nC ] )
%
% Adjoint of gridding operation. Definitions and details according to
% http://nicholasdwork.com/tutorials/dworkGridding.pdf
%
% Inputs:
% in is a 1D array representing ... |
github | ndwork/dworkLib-master | ofInterp2D.m | .m | dworkLib-master/ofInterp2D.m | 346 | utf_8 | c2213be0be44744797c1fff12d6f9ed9 |
function interped = ofInterp2D( img, du, dv )
[M N] = size(img);
xIndxs = ones(M,1) * (1:N);
yIndxs = (1:M)' * ones(1,N);
interped = interp2( xIndxs, yIndxs, img, ...
xIndxs+du, yIndxs+dv, 'linear', 0 );
%nanIndxs = find( ~isfinite( interped ) );
%if numel(nanIndxs) > 0
% interped(nanIndxs) = ... |
github | ndwork/dworkLib-master | normL2L1.m | .m | dworkLib-master/normL2L1.m | 974 | utf_8 | 76ee8cdd492a8534c970d30dc016a38c |
function out = normL2L1( in, varargin )
% out = normL2L1( in, [ 'ws', ws ] )
%
% Calculates the L_{2,1} norm of the input. It is assumed that
% the last dimension of in represents the groups
%
% Inputs:
% in: a multi-dimensional array. The last dimension of in represents
% the groups. That is, t... |
github | ndwork/dworkLib-master | mri_makeIntensityMask.m | .m | dworkLib-master/mri_makeIntensityMask.m | 2,262 | utf_8 | 47aca077cb8c1ffa9e20422ac609c60c |
function mask = mri_makeIntensityMask( kData, varargin )
% mask = mri_makeIntensityMask( kData [, 'thresh', thresh, ...
% 'm', m, 'morphScale', morphScale, 'noiseCoords', noiseCoords' ] )
%
% Created using the method of "SENSE: Sensitivity Encoding for Fast MRI" by
% Pruessmann et al., 1999
%
% Inputs:... |
github | ndwork/dworkLib-master | proxL2.m | .m | dworkLib-master/proxL2.m | 552 | utf_8 | e9cbdc73af9e0af8127d382cb1a7a847 |
function out = proxL2( x, t )
% out = proxL2( x, t )
%
% Calculates the proximal operator of f(x) = t * L2( x )
%
% Inputs:
% x - a 1D array
% t - a scalar
%
% Written by Nicholas Dwork - Copyright 2020
%
% This software is offered under the GNU General Public License 3.0. It
% is offered with... |
github | ndwork/dworkLib-master | svdDenoise.m | .m | dworkLib-master/svdDenoise.m | 1,210 | utf_8 | 5dc172043a9742c343ab70a667ba07f1 |
function out = svdDenoise( data, newRank )
% out = svdDenoise( data, newRank )
%
% Implements the denoising method of "Application of low-rank approximation using
% truncated singular value decomposition for noise reduction in hyperpolarized 13C
% NMR spectroscopy" by Francischello et al.
%
% Inputs:
... |
github | ndwork/dworkLib-master | bilateralFilter.m | .m | dworkLib-master/bilateralFilter.m | 3,789 | utf_8 | f4bb90012af0cefcaede6a68c101fd8b |
function out = bilateralFilter( img, varargin )
% out = bilateralFilter( img, [ 'S', S, 'sigmaD', sigmaD, ...
% 'sigmaR', sigmaR, 'verbose', verbose ] );
%
% Inputs
% img: the input image to be denoised
% either a MxN 2D grayscale image or a MxNx3 color image
%
% Optional Inputs:
% S: the l... |
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