| Vol. 9 No 6 December 2001 ISSN : 0971 - 4413 |
Target Detection
Road/Railway Line Detection
Road/railway line detection package
discriminates roads and railway lines from panchromatic
images. The software automatically extracts roads/railway lines from input image and
overlays them on the input image interactively with the help of a menu-driven graphical
user interface. The package can handle and analyse a generic binary image of size up to
1024 x 1024 pixels. Various modules, such as road seed extraction, thinning, linking of
road segments and road overlay provide functionality.
Bridge Detection
The bridge
detection system works on the basis of majority-must-be-granted logic-based multi-seed
supervised classification technique. Likewise, a simple split-and-merge technique for
river extraction has been introduced. A low-level operator is used for extraction of
possible bridge pixels. An edge-based grouping operation for grouping and a minimal
spanning tree-based merging operation is used for merging the bridge pixels. A decision
logic regarding water density and connectivity confirms the detection of the bridge.
River, Canal & Lake Detection
The software
performs target specific shape analysis and assigns the target labels to the regions
corresponding to the targets. It has target definitions included in the software. It takes
multispectral classified image of size 1024 x 1024 pixels as input. It is assumed that
these targets appear as water class in the input classified image. The class information
is also used as an input in the software.
Breakwater & Jetty Detection
The software takes multispectral classified
image of size 512 x 512 pixels as input, performs target
specific shape analysis and assigns the target labels to the regions corresponding to the
targets. It has target definitions included in the software. It is assumed that these
targets appear as submerge class or some specific class corresponding to breakwaters in
the input classified image. The class number information is also used as an input in the
software. The software works in command line mode.
Image Visualization / Image Registration / PAN-PAN Change Detection / Multispectral Classification / Image Navigation in 3-D Space / 3-D Visualization / Target Detection / SAR Processing / Millimetric (mm) Wave Imaging / Optical Correlator System / Product Generation System