Spectral Python 0.16.0 adds Adaptive Coherence Estimator (ACE) and Pixel Purity Index (PPI)

Spectral Python (SPy) is a python package for hyperspectral image processing.

Release 0.16.0 adds Python 3 support for all functions except view_cube and view_nd. Note that for Python 3, you should use the Qt4Agg matplotlib backend.

New features in this release include the Adaptive Coherence/Cosine Esimator (ace) target detector, Pixel Purity Index (ppi), ability to save ENVI classification files (envi.save_classification), and linear contrast enhancement (by data limits or cumulative histogram percentiles). The SPy imshow function now applies a 2% histogram color stretch by default (this can be overridden in the spectral.settings object).

Additional info is in the version 0.16.0 issues.