Hello, you can use SPRING ( http://www.dpi.inpe.br/spring/english/ ) for free. You can also try Idrisi/ Terrset with an evaluation licence.

Thank you for the quick response

Grass Gis

http://grass.osgeo.org/

http://grass.osgeo.org/

Hi Srijith,

There are numerous GIS software to perform image classification, some are already mentioned above. However, the performance of image classification is measured using a criterion not based on the software has been used. Several criterion which are often used such as: kappa, user accuracy, producer accuracy and total accuracy. These criterion are calculated using a confusion matrix based on ground check. Some software provide an automatic calculation of accuracy assessment e.g. ENVI (http://www.exelisvis.com/docs/CalculatingConfusionMatrices.html), but often we have to make our own confusion matrix.

Good luck!

You can use R or Phython to do that.

SAGA GIS you can use. Tutorial can be found at http://dst-iget.in/