PRIMEWIN: Processing of Images on Windows

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## Regional Remote Sensing Centre-Central, NAGPUR

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# PRIMEWIN: PRocessing of IMagEs on WINdows

PRIMEWIN is an indigenous standalone image-processing package developed on windows platform. All the functionalities and GUIs have been developed using VC++. It encompasses the most frequently used functionalities of image processing viz. Satellite data loading, viewer for display of data with ancillary tools, vector overlays, Sub-image extraction, extraction using AOI polygon (shapefile), geometric correction, image enhancements, Principal component analysis, HIS, Image fusion (HIS, Brovey, Multiplicative), spatial filtering, arithmetic band combinations, supervised and unsupervised classification and additional utilities viz. OCM data processing, NOAA SST, Image Statistics, topoindex etc.

The package has been developed keeping in mind the target users viz. academic Institutions, NGOs, line departments etc. who cannot afford COTS packages and need few basic functionalities of image processing.

Apart from catering to image processing needs, it can be effectively used - as a demonstration tools for showcasing the potential of remote sensing data, DIP and also as a teaching / learning aid in academic institutions.

· Raster Data Structure: GeoTiff 6.0

GeoTiff 6.0 has been used for handling raster/image data. It supports all data types 8 – 32 bit and Grey scale and palate color images. The standard conventions have been followed so that the raster file is compatible with other DIP packages supporting GeoTIff format.

· Vector Data Structure: Shapefile

Shapefile has been used for handling of vector data. It supports vector geometry of types viz. point, line, polygon. Attribute data handling is handled in .dbf format.

· Major file nomenclatures used

· Image file: filename.tif

· Vector file: filename.shp

· GCP file: filename.gcp

· Lookup table file: filename.lut

· PC table: filename.cmt

· Training samples: filename.sam

· Pixel grabber file: filename.pgb

· System configuration required

· Pentium IV or above

· RAM: 512 MB or above, preferable 1 GB

· OS: Windows NT, 2000, XP

· Monitor: 17” or above, preferable 21”

· Display resolution: 1280 x 1024 or above

· User Community / Target Uses

· Academic Institutions

· Line departments

· NGOs

· Village Resource Centres

· As a demonstration tool

· As a teaching / learning aid

· As add-on tool along with data products supplied by NDC

· Functionalities Available

Satellite Data Loading

· Loading of IRS series of data to Viewer or Disk, CDinfo, Header etc.

Viewer

· Overview & full resolution display, Numeric dump, Contrast enhancements, Sub-image

extraction, Zoom, Pan, Pseudo-color rendering, Profile etc.

· Vector Utilities: Overlay, Rendering, Annotation, Identify, Query, Image extraction using vector mask etc.

Geometric Correction

· GCP collection (image- image), Mosaic area, Image registration, Projection parameters etc

Image Transforms

· Principal component, Intensity-Hue-Saturation, Data fusion using HIS, Brovey, Multiplicative, Tasseled Cap etc.

Spatial Filtering

· Average, High pass, Edge detection, Edge sharpening, Directional, Custom, Preview etc.

Arithmetic Band Combinations

Supervised & Unsupervised Classification

· Training site collection, Signature Separabiltiy, Confusion Matrix, MINDIS, PP, MXL, ISODATA, K-MEANS etc.

Utilities

· Image Statistics, Topo Index etc.

· Application modules for OCM data processing, NOAA SST

Online hypertext help

· Modules under development

· Refinement & Aggregation

· Topo index – Spatial referencing

· Data fusion using Wavelet transforms

· Texture Analysis

· Segmentation & Region growing

· Map Composition