Image Processing Toolbox User's Guide |

**Image Analysis and Statistics**

**Image Analysis**

`bwboundaries` |
Trace region boundaries in binary image |

`bwtraceboundary` |
Trace object in binary image |

`edge` |
Find edges in intensity image |

`hough` |
Hough transform |

`houghlines` |
Extract line segments based on the Hough transform |

`houghpeaks` |
Identify peaks in the Hough transform |

`qtdecomp` |
Perform quadtree decomposition |

`qtgetblk` |
Get block values in quadtree decomposition |

`qtsetblk` |
Set block values in quadtree decomposition |

**Texture Analysis**

`entropy` |
Entropy of an intensity image |

`entropyfilt` |
Local entropy of an intensity image |

`graycomatrix` |
Gray-level co-occurrence matrix |

`graycoprops` |
Properties of a gray-level co-occurrence matrix |

`rangefilt` |
Local range of an image |

`stdfilt` |
Local standard deviation of an image |

**Pixel Values and Statistics**

`corr2` |
Compute 2-D correlation coefficient |

`imcontour` |
Create contour plot of image data |

`imhist` |
Display histogram of image data |

`impixel` |
Determine pixel color values |

`improfile` |
Compute pixel-value cross-sections along line segments |

`mean2` |
Compute mean of matrix elements |

`pixval` |
Display information about image pixels |

`regionprops` |
Measure properties of image regions |

`std2` |
Compute standard deviation of matrix elements |

Spatial Transformation and Registration | Image Arithmetic |

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