| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that accurate measurement of a layer-thickness is not achieved by measuring the thickness from the retina in a perpendicular direction when the photographed retinal layer is tilted in an image since an OCT (optical coherence tomography) image has a difference in resolution between the vertical direction and the horizontal direction while the layer-thickness is measured by calculating the measurement direction that reflects a difference in the resolution for quantitatively measuring the retinal layer thickness with large bending by using the OCT image with the resolution having the difference between the vertical direction and the horizontal direction.SOLUTION: An image processor includes: a retinal layer detecting means for specifying boundaries between the retinal layers from a tomography image of the retina; a perpendicular direction calculating means for calculating the perpendicular direction, that reflects the resolution ratio between the vertical direction and the horizontal direction, to the boundary between the layers in the detected boundary between the retinal layers; a layer-thickness measuring means for measuring the retinal layer thickness in the perpendicular direction which has been calculated; and a map creating means for creating a map of the layer-thickness by using the measured retinal layer thickness. |
