DIPUM 2 Function List

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DIPUM Toolbox Version 2—Function List

The following is a listing of all the functions in the DIPUM Toolbox, Version 2, along with a short explanation of each function. The functions are organized in roughly the same categories used in the MathWorks' Image Processing Toolbox. To see a list that includes all the function in both toolboxes refer to Appendix A of the book.

Function	Description
Image Display and Exploration
ice	Interactive Color Editor.
rgbcube	Displays an RGB cube on the MATLAB desktop.
Image file I/O
movie2tifs	Creates a multiframe TIFF file from a MATLAB movie.
seq2tifs (DIPUM)	Creates a multi-frame TIFF file from a MATLAB sequence.
tifs2movie	Create a MATLAB movie from a multiframe TIFF file.
tifs2seq	Create a MATLAB sequence from a multi-frame TIFF file.
Geometric Transformations
imtransform2	2-D image transformation with fixed output location.
pixeldup	Duplicates pixels of an image in both directions.
pointgrid	Points arranged on a grid.
reprotate	Rotate image repeatedly.
vistform	Visualization transformation effect on set of points.
Image Registration
visreg	Visualize registered images.
Pixel Values and Statistics
localmean	Computes an array of local means.
statmoments	Computes statistical central moments of image histogram.
Image Analysis
bayesgauss	Bayes classifier for Gaussian patterns.
bound2eight	Convert 4-connected boundary to 8-connected boundary.
bound2four	Convert 8-connected boundary to 4-connected boundary.
bound2im	Converts a boundary to an image.
bsubsamp	Subsample a boundary.
bwboundaries	Trace region boundaries in binary image.
colorgrad	Computes the vector gradient of an RGB image.
colorseg	Performs segmentation of a color image.
connectpoly	Connects vertices of a polygon.
cornerprocess	Processes the output of function cornermetric.
diameter	Measure diameter and related properties of image regions.
fchcode	Computes the Freeman chain code of a boundary.
frdescp	Computes Fourier descriptors.
ifrdescp	Computes inverse Fourier descriptors.
im2minperpoly	Minimum perimeter polygon.
imstack2vectors	Extracts vectors from an image stack.
invmoments	Compute invariant moments of image.
localthresh	Local thresholding.
mahalanobis	Computes the Mahalanobis distance.
movingthresh	Image segmentation using a moving average threshold.
otsuthresh	Otsu's optimum threshold given a histogram.
polyangles	Computes internal polygon angles.
principalcomps	Principal-component vectors and related quantities.
randvertex	Adds random noise to the vertices of a polygon.
regiongrow	Perform segmentation by region growing.
signature	Computes the signature of a boundary.
specxture	Computes spectral texture of an image.
splitmerge	Segment an image using a split-and-merge algorithm.
statxture	Computes statistical measures of texture in an image.
strsimilarity	Computes a similarity measure between two strings.
x2majoraxis	Aligns coordinate x with the major axis of a region.
Image Compression
compare	Computes and displays the error between two matrices.
cv2tifs	Decodes a TIFS2CV compressed image sequence.
huff2mat	Decodes a Huffman encoded matrix.
huffman	Builds a variable-length Huffman code for a symbol source.
im2jpeg	Compresses an image using a JPEG approximation.
im2jpeg2k	Compresses an image using a JPEG 2000 approximation.
imratio	Computes the ratio of the bytes in two images/variables.
jpeg2im	Decodes an IM2JPEG compressed image.
jpeg2k2im	Decodes an IM2JPEG2K compressed image.
lpc2mat	Decompresses a 1-D lossless predictive encoded matrix.
mat2huff	Huffman encodes a matrix.
mat2lpc	Compresses a matrix using 1-D lossles predictive coding.
ntrop	Computes a first-order estimate of the entropy of a matrix.
quantize	Quantizes the elements of a UINT8 matrix.
showmo	Displays the motion vectors of a compressed image sequence.
tifs2cv	Compresses a multi-frame TIFF image sequence.
unravel	Decodes a variable-length bit stream.
Image Enhancement
adpmedian	Perform adaptive median filtering.
gscale	Scales the intensity of the input image.
intrans	Performs intensity (gray-level) transformations.
Image Noise
imnoise2	Generates an array of random numbers with a specified PDF.
imnoise3	Generates periodic noise.
Linear Filtering
dftfilt	Performs frequency domain filtering.
spfilt	Performs linear and nonlinear spatial filtering.
Linear 2-D Filter Design
bandfilter	Computes frequency domain band filters.
cnotch	Generates circularly symmetric notch filters.
hpfilter	Computes frequency domain highpass filters
lpfilter	Computes frequency domain lowpass filters.
recnotch	Generates rectangular notch (axes) filters.
Fuzzy Logic
aggfcn	Aggregation function for a fuzzy system.
approxfcn	Approximation function.
bellmf	Bell-shaped membership function.
defuzzify	Output of fuzzy system.
fuzzyfilt	Fuzzy edge detector.
fuzzysysfcn	Fuzzy system function.
implfcns	Implication functions for a fuzzy system.
lambdafcns	Lambda functions for a set of fuzzy rules.
makefuzzyedgesys	Script to make MAT-file used by FUZZYFILT.
onemf	Constant membership function (one).
sigmamf	Sigma membership function.
smf	S-shaped membership function.
trapezmf	Trapezoidal membership function.
triangmf	Triangular membership function.
truncgaussmf	Truncated Gaussian membership function.
zeromf	Constant membership function (zero).
Morphological Operations (Binary Images)
endpoints	Computes end points of a binary image.
Texture Analysis
specxture	Computes spectral texture of an image.
statxture	Computes statistical measures of texture in an image.
Region-Based Processing
histroi	Computes the histogram of an ROI in an image.
Wavelets
waveback	Performs a multi-level, 2-dimensional inverse FWT.
wavecopy	Fetches coefficients of a wavelet decomposition structure.
wavecut	Sets to zero coefficients in a wavelet decomposition structure.
wavedisplay	Display wavelet decomposition coefficients.
wavefast	Performs a multilevel 2-dimensional fast wavelet transform.
wavefilter	Creates wavelet decomposition and reconstruction filters.
wavepaste	Puts coefficients in a wavelet decomposition structure.
wavework	Edits wavelet decomposition structures.
wavezero	Sets wavelet detail coefficients to zero.
Color Space Conversions
hsi2rgb	Converts HSI values to RGB color space.
rgb2hsi	Converts RGB values to HSI color space.
Array Operations
dftuv	Computes meshgrid arrays.
paddedsize	Computes the minimum required pad size for use in FFTs.
Image Types and Type Conversions
tofloat	Convert image to floating point.
Miscellaneous Functions
conwaylaws	Applies Conway’s genetic laws to a single pixel.
i2percentile	Computes a percentile given an intensity value.
iseven	Determines which elements of an array are even numbers.
isodd	Determines which elements of an array are odd numbers.
manualhist	Generates a bimodal histogram interactively.
percentile2i	Computes an intensity value given a percentile.
timeit	Measure time required to run function.
twomodegauss	Generates a bimodal Gaussian function.