Master index | Index for ./freetb4matlab/image |

applylut | % Uses lookup tables to perform a neighbour operation on binary images. |

autumn | % Create color colormap. This colormap is red through orange to yellow. |

bestblk | % Calculates the best size of block for block processing. |

blkproc | % Processes image in blocks using user-supplied function. |

bmpwrite | % Write the bitmap @var{X} into @var{file} (8-bit indexed uncompressed). |

bone | % Create color colormap. This colormap is a gray colormap with a light |

brighten | % Darkens or brightens the given colormap. If the @var{map} argument |

bwarea | % Estimates the area of the 'on' pixels of @var{bw}. |

bwborder | % Finds the borders of foreground objects in a binary image. |

bwdist | % |

bweuler | % Calculates the Euler number of a binary image. |

bwhitmiss | % Perform the binary hit-miss operation. |

bwmorph | % Perform a morphological operation on a binary image. |

bwperim | % Find the perimeter of objects in binary images. |

bwselect | % Select connected regions in a binary image. |

cmpermute | % Reorders colors in a colormap. |

cmunique | % Finds colormap with unique colors and corresponding image. |

col2im | % Rearranges matrix columns into blocks. |

colfilt | % Apply filter to matrix blocks |

colorgradient | % Define a colour map which smoothly traverses the given colors. |

colormap | % Set the current colormap. |

conndef | % Creates a connectivity array. |

contrast | % Return a gray colormap that maximizes the contrast in an image. The |

cool | % Create color colormap. The colormap is cyan to magenta. The argument |

copper | % Create color colormap. This colormap is black to a light copper tone. |

cordflt2 | % Implementation of two-dimensional ordered filtering. This function has been |

corr2 | % Returns the correlation coefficient between @var{I} and @var{j}. |

deriche | % Deriche 2D image gradient using recursive filters. Precessing time is |

dilate | % Perform a dilation morphological operation on a binary image. |

edge | % Detect edges in the given image using various methods. The first input @var{im} |

entropy | % Computes the entropy of an image. |

entropyfilt | % Computes the local entropy in a neighbourhood around each pixel in an image. |

erode | % Perform an erosion morphological operation on a binary image. |

fftconv2 | % Convolve 2 dimensional signals using the FFT. |

flag | % Create color colormap. This colormap cycles through red, white, blue |

fspecial | % Create spatial filters for image processing. |

gmap40 | % Create a color colormap. The colormap is red, green, blue, yellow, |

gray | % Return a gray colormap with @var{n} entries corresponding to values from |

gray2ind | % Convert a gray scale intensity image to an Octave indexed image. |

grayslice | % creates an indexed image @var{X} from an intensitiy image @var{I} |

graythresh | % Compute global image threshold using Otsu's method. |

histeq | % Histogram equalization of a gray-scale image. The histogram contains |

hot | % Create color colormap. This colormap is black through dark red, red, |

hough_circle | % Perform the Hough transform for circles with radius @var{r} on the |

houghtf | % Perform the Hough transform for lines or circles. |

hsv | % Create color colormap. This colormap is red through yellow, green, |

hsv2rgb | % Transform a colormap or image from the hsv space to the rgb space. |

im2bw | % Converts image data types to a black-white (binary) image. |

im2col | % Rearranges image blocks into columns. |

im2double | % Converts the input image to an image of class double. |

im2uint16 | % Converts the input image to an image of class uint16. |

im2uint8 | % Converts the input image to an image of class uint8. |

imadjust | % Adjust image or colormap values to a specified range. |

image | % Display a matrix as a color image. The elements of @var{x} are indices |

image_viewer | % Change the program or function used for viewing images and return the |

imagesc | % Display a scaled version of the matrix @var{a} as a color image. The |

imclose | % Perform morphological closing on a given image. |

imcomplement | % Computes the complement image. Intuitively this corresponds to the intensity |

imdilate | % Perform morphological dilation on a given image. |

imdither | |

imerode | % Perform morphological erosion on a given image. |

imfilter | % Computes the linear filtering of the image @var{I} and the filter @var{f}. |

imfinfo | % Read image information from a file. |

imginfo | % Get image size from file @var{filename}. |

imhist | % Shows the histogram of an image using hist. |

immaximas | % Finds local spatial maximas of the given image. A local spatial maxima is |

imnoise | % Adds noise to image in @var{A}. |

imopen | % Perform morphological opening on a given image. |

impad | % Pad (augment) a matrix for application of image processing algorithms. |

imperspectivewarp | % Applies the spatial perspective homogeneous transformation @var{P} to the image @var{im}. |

imread | % Read images from various file formats. |

imremap | % Applies any geometric transformation to the image @var{im}. |

imresize | % Scales the image @var{A} by a factor @var{m} using nearest neighbour |

imrotate | % Rotation of a 2D matrix about its center. |

imrotate_Fourier | % Rotation of a 2D matrix. |

imshear | % Applies a shear to the image @var{M}. |

imshow | % Display the image @var{im}, where @var{im} can be a 2-dimensional |

imsmooth | % Smooth the given image using several different algorithms. |

imtophat | % Perform morphological top hat filtering. |

imtranslate | % Translate a 2D image by (x,y) using Fourier interpolation. |

imwrite | % Write images in various file formats. |

ind2gray | % Convert an Octave indexed image to a gray scale intensity image. |

ind2rgb | % Convert an indexed image to red, green, and blue color components. |

isbw | % Returns true for a black-white (binary) image. |

isgray | % Returns true for an gray-scale intensity image. An variable is a gray scale image |

isind | % Returns true for an index image. All index values must |

isrgb | % Returns true if parameter is a RGB image. |

jet | % Create color colormap. This colormap is dark blue through blue, cyan, |

label2rgb | % Converts a labeled image to an RGB image. |

makelut | % Create a lookup table which can be used by applylut. |

mat2gray | % Converts a matrix to a intensity image. |

mean2 | % Returns the mean value for a 2d real type matrix. |

medfilt2 | % Two dimensional median filtering. |

nlfilter | % Processes image in sliding blocks using user-supplied function. |

ntsc2rgb | % Transform a colormap or image from NTSC to RGB. |

ocean | % Create color colormap. The argument @var{n} should be a scalar. If it |

ordfilt2 | % Two dimensional ordered filtering. |

ordfiltn | % Two dimensional ordered filtering. |

padarray | % Pads an array in a configurable way. |

pink | % Create color colormap. This colormap gives a sepia tone on black and |

poly2mask | % Convert a polygon to a region mask. |

prism | % Create color colormap. This colormap cycles trough red, orange, yellow, |

qtdecomp | % Performs quadtree decomposition. |

qtgetblk | % Obtain block values from a quadtree decomposition. |

qtsetblk | % Set block values in a quadtree decomposition. |

radon | % |

rainbow | % Create color colormap. This colormap is red through orange, yellow, green, |

rangefilt | % Computes the local intensity range in a neighbourhood around each pixel in |

rgb2gray | % Converts an RGB image to a gray scale image, or a color map |

rgb2hsv | % Transform a colormap or image from the rgb space to the hsv space. |

rgb2ind | % Convert an RGB image to an Octave indexed image. |

rgb2ntsc | % Transform a colormap or image from RGB to NTSC. |

rgbplot | % Plot a given color map. |

roicolor | % Select a Region Of Interest of an image based on color. |

saveimage | % Save the matrix @var{x} to @var{file} in image format @var{fmt}. Valid |

spring | % Create color colormap. This colormap is magenta to yellow. |

std2 | % Returns the standard deviation for a 2d real type matrix. |

stdfilt | % Computes the local standard deviation in a neighbourhood around each pixel in |

stretchlim | % Finds limits to contrast stretch an image |

summer | % Create color colormap. This colormap is green to yellow. |

uintlut | % Computes matrix B by using A as an index to lookup table LUT. |

white | % Create color colormap. This colormap is completely white. |

winter | % Create color colormap. This colormap is blue to green. |

- devel

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