A system comprises a memory operable to store light intensity information for a plurality of neighboring pixels of an image that includes a dairy livestock. The system further comprises a processor communicatively coupled to the memory. The processor determine that a difference between the light intensity information for a first pixel of the plurality of neighboring pixels and at least some of the other neighboring pixels exceeds a threshold. The processor further discards the first pixel and determines a location of a teat of the dairy livestock based on the image, excluding the discarded pixel.