I always need functions like these. I have been copy/pasting them into each new program, so it will be nice to see them included in ITK!

I think you can also extend the functionality a little bit farther by changing this line:

if (value < m_Minimum && value != excludeMin)

to

if (value < m_Minimum && value <= excludeMin)

This allows the user to look for the lowest value above excludeMin (so that multiple contiguous values will be ignored). The same goes for the max search.

The author adds to itkMinimumMaximumImageCalculator the capability of getting a list of all pixels which have the minimum/maximum value, rather than only one pixel (the first) as currently implemented. Secondly, the author allows a particular value to be ignored (typically a "background" value) while searching for the min/max.

Tests are provided to exercise the code.

The source code and demo images are provided. The work is fully reproducible.

I downloaded the code, compiled it, and ran the tests without any errors and both tests passed.

The new functionality is clearly demonstrated in the test.

The code is easy to follow. A few comments could always help, but the code is straight forward even without them. I have only tested the code on Linux (Fedora 13).

I would love to see this added to ITK!