This toolbox is **not** a clone of the Mathwork's own Image Processing
Toolbox although there are many functions in common.
This toolbox predates IPT by many years, is open-source, contains many
functions that are useful for image feature extraction and control.
It was developed under Unix and Linux systems and some functions
rely on tools and utilities that exist only in that environment.

I'm in transition between two web sites at the moment. The primary source should be your first point of call. If there are problems try alternate.

Camera modeling and calibration | |
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camcald | Camera calibration from non-coplanar 3D point data |

camcalp | Camera calibration from intrinsic and extrinsic parameters |

camcalp_c | Camera calibration from intrinsic and extrinsic parameters for central projection imaging model |

camcalt | Camera calibration Tsai's method |

camera | Camera imaging model |

gcamera | Graphical camera imaging model |

invcamcal | Inverse camera calibration by Ganapathy's method |

pulnix | Calibration data form Pulnix TN6 camera |

Image plane points and motion | |
---|---|

examples/fmtest | Example of fmatrix() |

examples/homtest | Example of homography() |

epidist | Distance of points from epipolar lines |

epiline | Display epipolar lines |

fmatrix | Estimate the fundamental matrix |

frefine | Refine fundamental matrix |

homography | Estimate homography between 2 sets of points |

homtrans | Transform points by an homography |

invhomog | Invert an homography |

visjac_p | Image Jacobian matrix from points |

Image filtering | |
---|---|

ismooth | Gaussian smoothing |

ilaplace | Laplace filtering |

isobel | Sobel edge detector |

ipyramid | Pyramid decomposition |

ishrink | Image smoothing and shrinking |

Monadic filtering | |
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igamma | gamma correction |

imono | convert color to greyscale |

inormhist | histogram normalization |

istretch | linear normalization |

Non-linear filtering | |
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iclose | greyscale morphological closing |

imorph | greyscale morphological operations |

iopen | greyscale morphological opening |

irank | neighbourhood rank filter |

ivar | neighbourhood statistics |

iwindow | generalized neighbourhood operations |

pnmfilt | Pipe image through Unix utility |

zcross | zero-crossing detector |

Image kernels and structuring elements | |
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kdgauss | Derivative of 2D Gaussian kernel |

kgauss | 2D Gaussian kernel |

kdog | Difference of Gaussians |

klaplace | Laplacian kernel |

klog | Laplacian of 2D Gaussian |

kcircle | Circular mask |

Image segmentation | |
---|---|

trainseg | Return blob features |

colorseg | Display histogram |

ilabel | Label an image |

colordistance | Distance in rg-colorspace |

kmeans | k-means clustering |

Image feature extraction | |
---|---|

iblobs | Return blob features |

ihist | Display histogram |

ilabel | Label an image |

imoments | Compute image moments |

iharris | Harris interest point operator |

ihough | Hough transform (image) |

ihough_xy | Hough transform (list of edge points) |

houghoverlay | overlay Hough line segments |

houghpeaks | find peaks in Hough accumulator |

houghshow | show Hough accumulator |

max2d | find largest element in image |

mpq | compute moments of polygon |

npq | compute normalized central moments of polygon |

markcorners | show corner points |

upq | compute central moments of polygon |

Feature tracking | |
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imatch | Image template search |

isimilarity | Image window similarity |

subpixel | Subpixel interpolation of peak |

zncc | Region similarity |

Image utilities | |
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idisp | Interactive image browser |

idisp2 | Non-interactive image browser |

iroi | Extract region of interest |

xv | Display image using the XV tool |

Color space/photometry | |
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blackbody | Blackbody radiation |

ccdresponse | CCD spectral response |

ccxyz | CIE XYZ chromaticity coordinate |

cmfxyz | CIE XYZ color matching function |

rgb2xyz | RGB color space to CIE XYZ |

rluminos | relative photopic luminosity (human eye response) |

solar | solar irradiance spectra |

Image file input/output | |
---|---|

firewire | read an image from a firewire camera |

loadpgm | read a PGM format file |

loadppm | read a PPM format file |

savepnm | write a PNM format file |

loadinr | read INRIA INRIMAGE format file |

saveinr | write INRIA INRIMAGE format file |

webcam | read an image from a webcamera |

yuvopen | open a yuv4mpeg image stream |

yuvread | read a frame from a yuv4mpeg stream |

yuvr2rgb | convert a YUV frame to RGB |

Test patterns | |
---|---|

lena.pgm | a famous test image |

mkcube | return vertices of a cube |

mkcube2 | return edges of a cube |

testpattern | create range of testpatterns |

The Toolbox has taken a fair amount of my time to create and document. I would appreciate that if you use it you will cite it:

@article{Corke05f, Author = {P.I. Corke}, Journal = {IEEE Robotics and Automation Magazine}, Title = {Machine Vision Toolbox}, Month = nov, Volume = {12}, Number = {4}, Year = {2005}, Pages = {16-25} }or

"*Machine Vision Toolbox*", P.I. Corke,
IEEE Robotics and Automation Magazine, 12(4), pp 16-25, November 2005.