请问输出项多了一个分类如何处理

输入项12个分类，输出时多了一项，如何处理   

in english

It appears from the tabular results that you did not create a class descriptors file, hence the default designation of cls_0, cls_10, etc. It also must be the case that you have cells classified as 0 (zero) in your landscape, hence the treatment of those cells as a real class, since they were not designated as "background" in the class descriptors file. So, you need to re-evaluate your input landscape and make sure all the class values are what you intend and it might be helpful (or not) to include a class descriptors file.