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Textural features extracted by using amplitude-modulation frequency-modulation (AM-FM) techniques and granulometry are used to differentiate NVD from a normal optic disc. ... Neovascularization on the disc (NVD) is diagnosed when new vessels are located within one disc-diameter of the optic disc. Accurately detecting NVD is important in preventing vision loss due to DR. ... By combining the bottom-up vessel segmentation approach and extracting textural features with AM-FM and granulometry, good performance results were obtained in the classification of NVD. ...doi:10.1109/embc.2012.6347102 pmid:23367037 dblp:conf/embc/AgurtoYMPBBS12 fatcat:oqtks6rod5a6ncykvpnnzg45bq
This paper presents a multiscale method to detect neovascularization in the optic disc (NVD) using fundus images. ... All the vessels in the ROI are segmented by adaptively combining contrast enhancement methods with a vessel segmentation technique. ... We also thank The University of Texas Health Sciences Center in San Antonio and the Retina Institute of South Texas for providing our dataset. ...doi:10.1016/j.compmedimag.2015.01.001 pmid:25698545 pmcid:PMC4450143 fatcat:g57ifjqnfzb4hfnisvrrvs774i
Conceived and designed the experiments: BZ JL. Performed the experiments: JL QL. Analyzed the data: BZ JL. Contributed reagents/ materials/analysis tools: BZ. Wrote the paper: JL BZ. ... Agurto et al. applied AM-FM Representation and Granulometry to extract features (AM-FM types of features) and vessel segmentation on ROI by adaptive vessel segmentation (consecutive level for enhancement ... Of all the 15 features of proliferative retinopathy, new vessels at the optic disc can be detected  . This approach is not useful for new vessels outside of the optic disc area (NVE). ...doi:10.1371/journal.pone.0075699 pmid:24358105 pmcid:PMC3864789 fatcat:ofl4ezegw5h7fnve2samqnyvfq
Conclusions: The described automated system is capable of detecting the presence of new vessels. ... Results: Sensitivity and specificity results using a dataset of 60 images are 1.0000 and 0.9500 on a per image basis. ... However, Agurto  extended their work to include vessel segmentation and granulometry along with AM-FM to detect NVD. ...doi:10.5430/ijdi.v2n2p72 fatcat:pbkvavfq4vfx7doz2rycta2vri