Image Processing Toolbox User's Guide |

**Getting Summary Statistics About an Image**

You can compute standard statistics of an image using the `mean2`

`, `

`std2`

, and `corr2`

` functions. `

`mean2`

and `std2`

compute the mean and standard deviation of the elements of a matrix. `corr2`

computes the correlation coefficient between two matrices of the same size.

These functions are two-dimensional versions of the `mean`

, `std`

, and `corrcoef`

functions described in the *MATLAB *Function Reference.

Creating an Image Histogram | Computing Properties for Image Regions |

© 1994-2005 The MathWorks, Inc.