Index

affine transformations

analyzing images

quadtree decomposition

anti-aliasing <1> <2>

applylut <1> <2>

approximation

of an image background

area

of binary images <1> <2>

of image regions

arrays

storing images

averaging filter <1> <2>

B

background

of a binary image

of an intensity image

bestblk

bicubic interpolation

bilinear interpolation

connected-components labeling

binary image operations

flood fill

lookup-table operations <1> <2>

morphological operations

neighborhoods

binary images <1> <2>

changing the display colors of

connected-components labeling

converting from other types

lookup table operations

morphological operations

object selection

packing

perimeter determination <1> <2>

bit depth

blind deconvolution algorithm

Canny edge detector <1> <2>

used for deblurring

blkproc <1> <2>

example <1> <2>

C

camera read-out noise

cancer cell demo

center of mass

calculating for region

center pixel

chrominance

D

damping

for noise reduction

data types

8-bit integers (uint8)

converting between <1> <2> <3> <4> <5> <6>

double-precision (double) <1> <2> <3> <4> <5> <6> <7>

in image filtering

summary of image types and numeric classes

DC component

See zero-frequency component <1> <2>

dconvreg

DCT image compression

dct2 <1> <2>

dctdemo demo application

dctmtx <1> <2>

avoiding boundary ringing

deblurring

conceptual model

overview

overview of functions

use of frequency domain

using the blind deconvolution algorithm

using the Lucy-Richardson algorithm

with regularized filter

with the Wiener filter

deblurring demos

decomposition

getting sequence

deconvblind

E

edge <1> <2>

higher-dimensional inverse

F

fan beam projections

fast Fourier transform

higher-dimensional

feature-based logic

fft

fft2 <1> <2> <3>

example <1> <2>

fftn <1> <2>

fftshift

example <1> <2>

file formats

graphics formats

files

displaying images from disk

filling a region

frequency sampling method <1> <2>

filling holes in images

filter design

frequency transformation method <1> <2>

windowing method <1> <2> <3>

filter2

compared to imfilter

filtering

filters

finite impulse response (FIR)

frequency response <1> <2>

imfilter

Infinite Impulse Response (IIR)

Laplacian of Gaussian

transforming from one-dimensional to two-dimensional

firdemo demo application

flat-field correction

flood-fill operation <1> <2>

foreground

of a binary image

fast Fourier transform

See also firdemo

fsamp2 <1> <2>

creating predefined filters

See also firdemo

fspecial

ftrans2

fwind1 <1> <2>

fwind2 <1> <2>

G

gamma correction

H

HDF

head phantom image

histeq

increase contrast example

I

idct2

ifft

ifft2

ifftn

IIR filters

im2bw <1> <2>

im2col

im2double <1> <2>

discrete cosine transform and

J

JPEG

JPEG compression

L

label matrix

creating

viewing as pseudo-color image <1> <2>

label2rgb

labeling

connected-components

levels of contours

Laplacian of Gaussian edge detector

Laplacian of Gaussian filter

line detection

line segment

pixel values along

linear conformal transformations

linear filtering <1> <2>

local weighted mean transformations

lookup table operations

lookup-table operations

Lucy-Richardson algorithm

luminance

M

magnifying

See resizing images

makelut <1> <2>

marker controlled watershed segmentation

marker image

mask image

masked filtering <1> <2>

converting to intensity images

mat2gray <1> <2>

matrices

maxima

mean2 <1> <2>

medfilt2 <1> <2>

nearest neighbor interpolation

N

neighborhood operations

neighborhoods

binary image operations

adaptive filtering (Weiner) and

neighborhood operations

nlfilter <1> <2>

noise

noise amplification

adding noise

salt and pepper noise <1> <2>

Gaussian noise <1> <2>

speckle noise

nonlinear filtering

nonuniform illumination

demo of correcting for

normalized cross-correlation

nrfiltdemo demo application

normxcorr2

NTSC color space <1> <2> <3>

ntsc2rgb <1> <2>

O

object selection

observed image

in image registration

opening

morphology

opening an image

optical transfer function (OTF)

order-statistic filtering

ordfilt2

orthonormal matrix

orthophoto

defined

orthorectified image

OTF

See optical transfer function

otf2psf

use of

outliers

overlap

in block operations

in distinct block operations

P

packed binary image

padarray

padding

parallel beam projections

padding borders

block processing

options with imfilter

PCX

perimeter determination

in binary images

phantom <1> <2>

piecewise linear transformations

pixel values <1> <2>

along a line segment

returning using a mouse

pixels

correcting for bad pixels

defining connectivity

displaying coordinates of

Euclidean distance between

returning coordinates of

selecting

pixval

PNG

writing as 16-bit

point mapping

for image registration

point spread function

importance of in deblurring

point spread function (PSF)

selecting a polygonal region of interest

polygon

pixels inside

polynomial transformations

predicting control point locations

in image registration

preferences

Prewitt edge detector

projections

projective transformations <1> <2>

PSF

See point spread function

psf2otf

use of

Q

qtdecomp <1> <2>

R

radon <1> <2> <3>

of the Shepp-Logan Head phantom

Radon transform <1> <2>

inverse Radon transform

line detection example

relationship to Hough transform

rank filtering

S

salt and pepper noise

sample images

sampling

handling undersampled images

saturation

in HSV color space

in NTSC color space

scale

demo of finding

screen bit depth <1> <2>

to create a binary image <1> <2>

T

template matching

texture mapping <1> <2>

tform

tformarray

tformfwd

tforminv

thresholding

to create indexed image from intensity image

TIFF

tomography

transformation matrix

transforms

discrete Fourier transform

discrete cosine <1> <2>

Fourier <1> <2> <3>

inverse discrete cosine

inverse Fourier

inverse Radon <1> <2>

Radon <1> <2>

two-dimensional Fourier transform

translate

troubleshooting

truesize <1> <2>

truncation rules

for image arithmetic operators

typographical conventions (table)

U

uint16

storing images in <1> <2>

uint8

storing images in <1> <2>

undersampling

uniform quantization

W

warp <1> <2>

watershed