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Published byOswin Wood Modified over 9 years ago
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ENVI 4.5 Product Updates
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Visual Information Solutions ENVI 4.5 Value Proposition ArcGIS Interoperability: Geodatabase and ArcMap access Fx enhancements: Improved end-to-end workflow New analytical spectral tools: SID and ICA are powerful tools for image scientist Continued data format support: Worldview, NITF and TFRD updates AccessAnalyzeShare
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Visual Information Solutions ENVI and ArcGIS Interoperability ENVI users will be able to: Access and read from ArcGIS Geodatabases Write out to geodatabases Supports enterprise, personal, and file Geodatabase types Launch ArcMap and create map compositions directly from ENVI
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Visual Information Solutions New Sensor and Data Support WorldView-1 data in GeoTIFF, NITF, and Stereo Pair. NITF for 32- and 64- bit Linux systems Full TFRD support in ENVI Zoom Remote Data Access in ENVI (OGC/JPIP), not just in FX
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Visual Information Solutions New Feature Extraction Functionality Programmatic access to Fx provides batch mode processing for production facilities and users with ENVI/IDL expertise – envi_doit, ‘envi_fx_doit’ Vector and Attribute Export allows customers to use Fx segmentation results in other analyses and workflows – export segments as features prior to classification
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Visual Information Solutions New Feature Extraction Functionality Summary Panel provides quick, practical, portable results
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Visual Information Solutions New Feature Extraction Functionality Vector Smoothing for cleaner and smoother results, with fewer vertices and generalized features – Douglas-Peucker based algorithm – works on line and polygon output – user controls smoothing threshold in pixels Create new vectors directly in ENVI Fx
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Visual Information Solutions New Feature Extraction Functionality Save/Restore training data for supervised classification Reuse training sets on libraries of imagery Restore multiple training sets to build multi-source feature library Use saved training data as input to batch Fx
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Visual Information Solutions New Spectral Algorithm – Independent Component Analysis (ICA) Kaolinite: (ICA band 6) Alunite: (ICA band 1) Cuprite, NV - AVIRIS ICA transforms a set of mixed random signals into components that are as mutually independent as possible Independent components uses higher order statistics than Principal Components. Better distinguishes weak signals from background noise.
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Visual Information Solutions Independent Component Analysis ICA can be used to find and separate hidden (noise) component
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Visual Information Solutions Independent Component Analysis Other applications of ICA – anomaly detection – dimension reduction – noise reduction – classification – endmember extraction Programmatic interface – envi_doit, ‘envi_ica_doit’ – envi_doit, ‘envi_ica_inv_doit’
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Visual Information Solutions New Spectral Algorithm – Spectral Information Divergence (SID) Classification technique (similar to SAM) that uses a divergence measure to match pixels to reference spectra SID can characterize spectral similarity and variability more effectively than SAM As with all spectral tools, programmatic access is provided
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Visual Information Solutions ENVI 4.5 with IDL 7.0 A single, cross-platform IDL development environment that looks and behaves like a native application The foundation for new functionality that will continue to improve the usability of ENVI + IDL
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