Multiclass SVM Classifier testing

What will be SVM classifier output when I trained SVM for 3 categories and tested with an image that doesnot belong to these categories?

Answer 1

[Chunru]

It will assign your image to one of the 3 categories.

[SWATHY Kakkooth]

Thank you.Is there any way so that we can give an output that the image doesn't belong to these 3 categories.