The area in bright green is the vegetation that I'm trying to convert from raster to polygon (Value = 1 for green area, Value = 0 for no color area). I performed a simple unsupervised classification, reclassified into binary format based on a 1 = what I want, 0 = not what I want, then attempted to convert the resulting raster to polygon.

Below is the result I get in polygon format, which doesn't even come close to resembling the green area in the image above.
