While performing the unsupervised classification, there were a few mixed classes with deciduous and coniferous trees. In some areas of the study area (SSC), the shadow of the tress was combined with Mixed Class of Trees (Coniferous and Deciduous) which gave Mixture. These signatures were taken into account and subtracted from the dataset.
Other issues encountered came from the coniferous and deciduous trees which give of the same reflectance as many of the other vegetation features in the landscape.
The data in unsupervised classified SSC image is not clear. It has generalized tones and reflectance values, which makes it difficult to properly classify every pixel within the image. This causes overestimation of one category and maybe some underestimation of other categories in the process.