1. A system for the automated analysis of sperm comprising: an imager comprising a sample holder configured to receive a sample containing sperm and an illumination source configured to illuminate a first side of the sample holder through a spatial filter interposed between the illumination source and the sample holder; an image sensor disposed on a second, opposite side of the sample holder configured to acquire at least one image frame of the sperm in the sample; and a processing unit configured to receive the at least one image frame from the image sensor, the processing unit configured identify and count sperm in the at least one image frame.