Synthesising Wider Field Images from Narrow-Field Retinal Video Acquired Using a Low-Cost Direct Ophthalmoscope (Arclight) Attached to a Smartphone

摘要

Access to low cost retinal imaging devices in low and middle income countriesis limited, compromising progress in preventing needless blindness. TheArclight is a recently developed low-cost solar powered direct ophthalmoscopewhich can be attached to the camera of a smartphone to acquire retinal imagesand video. However, the acquired data is inherently limited by the optics ofdirect ophthalmoscopy, resulting in a narrow field of view with associatedcorneal reflections, limiting its usefulness. In this work we describe thefirst fully automatic method utilizing videos acquired using the Arclightattached to a mobile phone camera to create wider view, higher quality stillimages comparable with images obtained using much more expensive and bulkydedicated traditional retinal cameras.