Is there any ideal software to use image fusion techniques other than MATLAB and ERDAS?
There are many remote sensing softwares that may be of use to use for image fusion, some (commercial) of them are:
ENVI/IDL from exelis: http://www.exelisvis.com
ENVI incorporates many well known image fusion algorithms (HSV transformation/Gram-Schmidt Spectral Sharpening, PC Spectral Sharpening/...) among other band transformations (Veg. Index calculation/ Tasseled Cap Transformation/ ...). On the plus side is the fact that you can easily program ENVI with IDL to make batch processing jobs (lots of data) or make a standalone IDL program for other transformation not already included in ENVI (supposing that you know how the fusion technique works and that you know how to translate that to code). It's multi-platform, though its kind of expensive.
IDRISI Selva: http://www.clarklabs.org/products/idrisi.cfm
IDRISI Selva is another commercial software that will let you use image fusion techniques, its windows-compatible only.
Some free software that you may try is:
QGIS: www.qgis.org
Even though QGIS is mainly designed to work with GIS vector data, it supports many raster imagery formats through the GDAL (http://www.gdal.org) open source library and GRASS. It's multi platform.
Finally, there are many format specific codes for several languages (Python, C, Java, etc) that will let you read your data and apply the transformations you need. This of course is not a "point and click" approach, but if you know how to read each format and if you know the theoretical basis of the fusion technique you should have no problem.
Best Regards,
Andrés
There are many remote sensing softwares that may be of use to use for image fusion, some (commercial) of them are:
ENVI/IDL from exelis: http://www.exelisvis.com
ENVI incorporates many well known image fusion algorithms (HSV transformation/Gram-Schmidt Spectral Sharpening, PC Spectral Sharpening/...) among other band transformations (Veg. Index calculation/ Tasseled Cap Transformation/ ...). On the plus side is the fact that you can easily program ENVI with IDL to make batch processing jobs (lots of data) or make a standalone IDL program for other transformation not already included in ENVI (supposing that you know how the fusion technique works and that you know how to translate that to code). It's multi-platform, though its kind of expensive.
IDRISI Selva: http://www.clarklabs.org/products/idrisi.cfm
IDRISI Selva is another commercial software that will let you use image fusion techniques, its windows-compatible only.
Some free software that you may try is:
QGIS: www.qgis.org
Even though QGIS is mainly designed to work with GIS vector data, it supports many raster imagery formats through the GDAL (http://www.gdal.org) open source library and GRASS. It's multi platform.
Finally, there are many format specific codes for several languages (Python, C, Java, etc) that will let you read your data and apply the transformations you need. This of course is not a "point and click" approach, but if you know how to read each format and if you know the theoretical basis of the fusion technique you should have no problem.
Best Regards,
Andrés
Kuldeep Tiwari · Malaviya National Institute of Technology Jaipur
"There are many remote sensing softwares...but ERDAS is best "
The best program is programm in which you work, and you know. In my opinion, the ENVI_versii 5.1 is the best of the commercial software for fusion satellite data.
Otherwise, I totally agree with Andrés Santamaría-Artigas
Best Regards,
Vladimir
To add to the answers of Andrés Santamaría-Artigas and Vladimir Flipovich:
Recently, I had to pansharpen a Pleiades image. ERDAS Imagine continued to give errors, an experience shared by my collegues for this type of images. However, it was possible to do the job with ENVI, with good results. The other alternative was to use the image analysis toolbox in ArcMap, fewer options than in ENVI, but it gives a decent result.
Best regards,
Wietske
Hello Sir, i suggest idrisi is the best one because image processing and gis applications can be seen in this and it is a decision support system so better to go with idrisi for image fusion
Here I assume that you are dealing with fusion of multispectral and pan images..
Actually it is not easy to say that the best one is xxx. Because pansharpening (fusion) algorithms modify the original spectral values and edge information. Some of the appraoches try to preserve the edges of pan image as much as they can. On the other hand, others try to perserve the spectral values. Therefore it depends on your usage purpose. (visualize, edge or spectral analyze, or all of them)
Orfeo (an opensource solution) and PCI geomatica* (http://www.pcigeomatics.com/pdf/Pansharp.pdf) are two possible solutions, which i can suggest to you.
* try PCI first :)
SAGA-GIS offers IHS-Sharpening, Brovery-Sharpening, PCA-based sharpening and colour-based spectral sharpening. http://www.saga-gis.org/saga_tool_doc/3.0.0/imagery_tools.html
Saga is open source and free of costs.
Check for this book "Image analysis, classification, and change detection in remote sensing : with algorithms for ENVI/IDL. by Morton J. Canty is also helpful
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