This is Inlab-Scheme Release 4 released as Open Source Software under GPL version 2
licensing terms several years ago.
is an independent implementation of the algorithmic language Scheme as
defined by the R4RS and the IEEE Standard 1178. In addition to the language
core Inlab-Scheme has support for several features
like bitmap/greymap processing and more.
Inlab-Scheme can be used as a general tool for image processing,
OCR or specialized optical object and pattern recognition. Take a look
at this example to give you a first impression.
You may download the source code distribution