In the United States railroad industry a hostler is a type of railroad engineer who moves locomotives in and out of service facilities.  1 Hostler - Definition and More from the Free Merriam-Webster Dictionary. 2  EtymologyOnLine- Hostler.  3 909.663-010: HOSTLER (motor trans.) alternate titles: hook-up driver; yard spotter.
The purpose of radioactive seed localization (RSL) of non-palpable lesions is to localize suspicious tissues for excision with the use of radioactive seeds. RSL differs from current localization procedures, whereby a non-radioactive wire is implanted into the lesion site and excised along with the affected tissue.
The optic disc localization methodology comprises of two steps. First, the OD location is identified using template matching and directional matched filter. To reduce false positives due. to bright areas of pathology, we exploit vessel characteristics inside the optic disc. The location of the fovea is estimated. as the point of lowest matched filter response within a search area determined by the optic disc location. Second, optic. disc segmentation is performed.