Image annotation and classification tasks mostly done by indian companies.
Coming particularly to image annotation, Indian companies such as cogito tech, infolks and playment have there lead role. As far as I am concerned, mostly prefer infolks due to their excellent quality and experience in the annotation.
According to me, I prefer Infolks, some of the points that I note about Infolks is listed below
they are helping customers with 100% data security.
providing good quality work
Providing dual level quality checking
free job samples available
24*7 custom shift services available