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PTblender is a command-line tool that implements just the colour and brightness correction functionality of PTmender (a replacement for PTStitcher). It was written by Daniel M German and is fully Open Source. A multi-platform version is now included with the pano12 library available at Sourceforge.

The algorithm is identical to that in PTStitcher, described in Helmut Dersch[*]'s article on Adjusting Colour And Brightness in Panoramas.

Usage is like so:

 PTblender [options] <tiffFiles>+
       -o <prefix>     Prefix for output filename
       -k <index>      Index to image to use as a reference (0-based)

Output is in the form of multiple TIFF files suitable for further processing by enblend or manual assembly in a paint program.

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