NDLI: Edge detection of retinal OCT image based on complex shearlet transform

Content Provider	IET Digital Library
Author	Xiaoming, Liu Ke, Xu Peng, Zhou Jiannan, Chi
Abstract	Aiming at the problem that optical coherence tomography (OCT) images with low contrast and layer structure blur are difficult to be automatically layered, a new OCT detection method based on complex shearlet transform is proposed. The method utilises nearly optimal sparse approximation singular curves of multi-scale shearlet transform, and the contrast invariance of the phase congruence method. Compared with the Canny edge detector and wavelet methods, the complex shearlet-based method achieved the highest Pratt figure of merit (PFOM) value. The PFOM value of a step type edge is 0.92, and that of a pulse type edge is 0.98. Three types of OCT images were tested, including normal retinal macula area, dry age-related macular degeneration, and Stargardt disease. The experimental results show that the complex shearlet-based method can detect more layered structures of OCT images, especially the boundary between the ganglion cell layer and the inner plexiform layer that is difficult to detect, and it can detect various types of OCT images. The complex shearlet-based transform method provides an effective and general way to measure retinal OCT images.
Starting Page	1686
Ending Page	1693
Page Count	8
ISSN	17519659
Volume Number	13
e-ISSN	17519667
Issue Number	Issue 10, Aug (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/13/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2018.6634
Journal	IET Image Processing
Publisher Date	2019-05-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Biology And Medical Computing Biomedical Imaging/measurement Biomedical Optical Imaging Complex Shearlet-based Method Computer Vision And Image Processing Technique Diseases Edge Detection Eye Ganglion Cell Layer Image Denoising Image Recognition Image Resolution Inner Plexiform Layer Layer Structure Blur Layered Structure Low Contrast Medical Image Processing Merit Value Multiscale Shearlet Normal Retinal Macula Area OCT Detection Method OCT Image Optical And Laser Radiation Optical Coherence Tomography Image Optical Tomography Optical, Image And Video Signal Processing Optimal Sparse Approximation Singular Curves Patient Diagnostic Method And Instrumentation Phase Congruence Method Pulse Type Edge Retinal OCT Image Step Type Edge Transform Vision Defects Wavelet Method Wavelet Transform
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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