| Brand |
ERDAS |
| Package Name |
Imagine |
| Date of Introduction |
1991 |
| Date of last update system and data |
April 2010 |
| - supported special hardware [1] |
3D and stereo display |
| - user definable operations and extensions [2] |
GUI modifiable via XML and Erdas macro langauge (EML), Graphical Model Maker (based on Spatial Modeling Language), C/C++ Imagine Developers' Toolkit |
| - supported image types [3] |
all listed under [3] |
| - other input data supported [4] |
all listed unver [4], thematic imagery, GPS, CAD |
| - maximum number of bands |
no limit |
| - ancillary data integration (Y (methods [5]) / N) |
Y (texture measures, a priori probability, raster or vector layers) |
| - sub pixel classification (Y (methods [6]) / N) |
Y (spectral unmixing, single feature probability) |
| - training sample selection (Y (methods [7]) / N) |
Y (individual pixels, areas of Interest, vector features, masks) |
| - accuracy assessment (Y (methods [8]) / N) |
Y (error matrix, kappa-coefficients) |
| - unsupervised classification (Y (methods [9]) / N) |
Y (advanced and regular RGB clustering, isodata, image segmentation) |
| - supervised classification (Y (methods [10]) / N) |
Y (all listed under [10] + [b]) |
| - vegetation index (Y/N) |
Y ([c]) |
| - principal component analysis (Y/N) |
Y ([d]) |
| - line (e.g. road) extraction (Y (methods [11]) / N) |
Y (proprietary) |
| - region growing segmentation (Y/N) |
Y |
| - multiresolution image segmentation (Y/N) |
Y |
| - multiscale approach (Y/N) |
N |
| - generalisation (Y (methods [12]) / N) |
Y (numerous depending on feature type) |
| - correction models (Y (methods [13]) / N) |
Y (rigorous orbital) |
| - transformations (Y (methods [14]) / N) |
Y ([e]) |
| - cartographic projections (Y (methods [15]) / N) |
Y (too many to list) |
| - ortho-image generation using DEM (Y/N) |
Y |
| - resampling (Y (methods [16]) / N) |
Y (all listed under [16] + bicubic spline) |
| - geometric accuracy assessment (Y (methods [17]) / N) |
Y (RMSE, average horizontal / vertical error) |
| - radiometric corrections (Y (methods [18]) / N) |
Y ([g]) |
| - spatial convolutions (Y (methods [19]) / N) |
Y ([h]) |
| - image transforms (Y (methods [20]) / N) |
Y ([j]) |
| - morphological operations (Y (methods [21]) / N) |
Y (dilate, erode, open, close, user definable) |
| - filtering of radar-imagery (Y (methods [22]) / N) |
Y (k) |
| - manual removal / addition of points, lines, polygons (Y/N) |
Y |
| - addition of text and symbols (Y/N) |
Y |
| - overlay with map data (Y/N) |
Y |
| - training facilities (Y (list duration) /N) |
Y (duration varies by course, customizable) |
| - main users (max. 5) |
DoD, National Mapping Agencies, forestry, aerial survey companies, State and Local Governments |
| - main applications (max. 5) |
geospatial analysis, ortho-mosaicking, change detection, mapping. |
| - distinguishable features (max. 20 words) [23] |
first commercial remote sensing product; continues to fuse image analysis with geospatial processing |
