Abstract:This paper focuses on the issue of extracting retina vessels with supervised approach. Since the green channel in the retina image has the best contrast between vessel and non-vessel, this channel is used to separate vessels. In our approach we are proposing a technique of using gray-level co-occurrence matrix method for composition of the retinal images. It is based on fact that the co-occurrence matrix of retina image describes the transition of intensities between neighbour pixels, indicating spatial struct… Show more
“…Rahebi and Hardalaç [7] proposed an NN-based retinal vessel segmentation using GLCM features. This method applies a median filter and local mapping method to enhance the input image in preprocessing stage.…”
“…Rahebi and Hardalaç [7] proposed an NN-based retinal vessel segmentation using GLCM features. This method applies a median filter and local mapping method to enhance the input image in preprocessing stage.…”
“…Rahebi and Hardalaç () proposed a method which performed retinal vessels segmentation through derived features from gray level co‐occurrence matrix of image. Firstly, the finest band of colored retinal image was selected for pre‐processing and then modifying the brightness in retinal image by applying new local processing function.…”
Retina is the interior part of human's eye, has a vital role in vision. The digital image captured by fundus camera is very useful to analyze the abnormalities in retina especially in retinal blood vessels. To get information of blood vessels through fundus retinal image, a precise and accurate vessels segmentation image is required. This segmented blood vessel image is most beneficial to detect retinal diseases. Many automated techniques are widely used for retinal vessels segmentation which is a primary element of computerized diagnostic systems for retinal diseases. The automatic vessels segmentation may lead to more challenging task in the presence of lesions and abnormalities. This paper briefly describes the various publicly available retinal image databases and various machine learning techniques. State of the art exhibited that researchers have proposed several vessel segmentation methods based on supervised and supervised techniques and evaluated their results mostly on publicly datasets such as digital retinal images for vessel extraction and structured analysis of the retina. A comprehensive review of existing supervised and unsupervised vessel segmentation techniques or algorithms is presented which describes the philosophy of each algorithm. This review will be useful for readers in their future research. K E Y W O R D S retinal blood vessels, retinal diseases, retinal image databases, supervised techniques, unsupervised techniques
“…Exudates are bright yellow or white in color and have high intensity in the green channel. We have localize the exudate patches more accurately by taking all the candidate regions whose mean intensities in the green channel are greater than a fraction (obtained by training) of the maximum intensity in the channel [ 16 ]. After this the contours which satisfy both conditions remain in the output while other may be discarded [ 17 ].…”
Prolonged diabetes ultimately leads to Diabetic Retinopathy (DR) which is one of the leading causes of preventable blindness in the
world. Through advanced image analysis techniques are used for abnormalities detection in retina that define and correlate the
severity of DR. A thorough study is done in this area in recent past years and on the basis of these studies we have developed a
computer based prediction model that is used to determine the severity of DR. To identify severity DR, we have analyzed the
human eye image. We have extracted some important features from human eye image i.e. Blood Artery, Optical disc, Exudates.
Based on these image and data we have designed an automated system for the determination of DR severity. This automated DR
severity assessment methods can be used to predict the clinical case and conditions when young clinicians would agree or disagree
with their more experienced fellow members. The algorithms described in this study may be used in clinical practice to validate or
invalidate the diagnoses. Algorithms or method developed here may also be used for pooling diagnostic knowledge for serving
mankind. Here we have described a computational based low cost retinal diagnostic approach which can aid an ophthalmologist to
quickly diagnose the various stages of DR. This system can accept retinal images and can successfully detect any pathological
condition associated with DR.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.