Patent ID: 11893663
Assignee: OPTOS PLC
Field: Computer technology (Electrical engineering)
Classification: CPC A  G | IPC A  G

Claim 17:
18. An apparatus for generating a segmentation confidence map by processing retinal layer segmentation data generated by a retinal layer segmentation algorithm, which generates the retinal layer segmentation data by generating, for each voxel of at least a portion of a C-scan of a retina, a respective value of a classification indicator indicating a classification of the voxel as belonging to a retinal layer class of the predefined set of retinal layer classes, the apparatus comprising:
a confidence indicator evaluation module arranged to generate, for each voxel of a set of voxels for which the retinal layer segmentation data has been generated, a respective value of a first confidence indicator which is indicative of a level of confidence in the classification of the voxel;
a voxel identification module arranged to identify, for a retinal layer class of the predefined set of retinal layer classes, a subset of the set of voxels such that the value of the classification indicator generated for each voxel of the subset indicates a classification of the voxel as belonging to the retinal layer class;
a confidence evaluation module arranged to calculate, for each A-scan of a plurality of A-scans of the C-scan, which A-scan has at least one voxel in the identified subset, a respective value of a second confidence indicator which is indicative of a level of confidence in a classification of the at least one voxel in the A-scan into the retinal layer class, based on at least one value of the first confidence indicator that has been respectively generated for the at least one voxel in the A-scan; and
a segmentation confidence map generation module arranged to generate the segmentation confidence map using the calculated values of the second confidence indicator, such that the segmentation confidence map indicates a spatial distribution of a level of confidence in the classification of the voxels in the subset as belonging to the retinal layer class of the predefined set of retinal layer classes.