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Request: how to generate contingency matrices to evaluate thematic rasters
By hariasa,
Hi everyone,
I was wondering if anyone knows a handy and efficient way to create a contingency matrix, evaluating a thematic raster layer (result from a classification) with the source polygons (in either vector or raster). This will be handy to get the users accuracy and producers accuracy and to specify whether a classification makes sense or not.
I know it is possible to do this in ERDAS when actually classifying, but I am looking for a method that enables me to do it after the results ha
Request: How to identify rooftops and slums from GeoEye 1
By rahmansunbeam,
Hello all,
This is me again. For the last few weeks i have been studying the GeoEye imageries and learned that it's not only little information that weakens a research, but too much of it almost kills it. The imageries are of 0.5 meter resolution with 4 primary bands (R, G, B, Nir) of Dhaka and have Google Earth like view. I have been struggling (and somewhat succeeding) to extract all the wet and dry natural features from the images, but now the human creations are eating my head.
Studying
Removing Back ground Values
By jack_stepeny,
I have created a NDVI image from LANDSAT TM data in erdas. Now I want to create a Layout for the NDVI image as well as need to reclassify the NDVI image in ArcGIS using Natural Breakings. My problem is that when I opt for the option No Color for the Background it also remove the 0 values from the NDVI image.
I simply want to remove 0 background values and keep the 0 values from the NDVI image.
Please suggest how to do that.
Leica Geosystems Announces Leica MissionPro Software
By EmperoR,
Leica Geosystems Geospatial Solutions Division is pleased to announce the release of its new mission planning software, Leica MissionPro. The software provides mission planning capability for all airborne sensors including LiDAR, line and frame sensors and is fully integrated into existing Z/I Imaging and Leica Geosystems workflows.
The company reported that in addition to the core planning functionality, Leica MissionPro includes an exciting range of new features such 3D virtual Globe V
PCI Geomatics Releases GXL Aerial v2.1
By EmperoR,
PCI Geomatics, a world leading developer of geo-imaging software and systems, today announces the release of its GeoImaging Accelerator Aerial (GXL-Aerial) version 2.1; the latest version of the company’s high-speed, high-volume multi CPU/GPU distributed processing software for aerial workflows.
Following feedback from its user base, PCI has made numerous improvements to the GXL including increases in accuracy and speed, advanced automation, and an enhanced user experience. GXL Aerial v2.1 als
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