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An introduction to digital image processing
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The article was published on 1986-01-01 and is currently open access. It has received 1745 citations till now. The article focuses on the topics: Digital image processing & Image processing.read more
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Journal ArticleDOI
Characterisation of choroidal morphological and vascular features in diabetes and diabetic retinopathy.
Preeti Gupta,Sri Gowtham Thakku,Charumathi Sabanayagam,Gavin Tan,Rupesh Agrawal,Rupesh Agrawal,Chui Ming Gemmy Cheung,Ecosse L. Lamoureux,Tien Yin Wong,Ching-Yu Cheng +9 more
TL;DR: Choroidal morphology and vasculature were altered in Indian adults with diabetes andDR and these findings may provide insights into choroidal changes in diabetes and DR.
Book ChapterDOI
Finger vein recognition
TL;DR: Finger vein biometrics is emerging as the foolproof method of automated personal identification as it has become one of the fastest growing new biometric technology that is quickly finding its way from research labs to commercial development.
Journal ArticleDOI
Gradient based adaptive thresholding
Haniza Yazid,Hamzah Arof +1 more
TL;DR: A new approach to create an adaptive threshold surface is proposed to segment an image and is inspired by the Yanowitz's method and is improved upon by the introduction of a simpler and more accurate threshold surface.
Proceedings ArticleDOI
Automatic segmentation of iris images for the purpose of identification
TL;DR: A new method for automatically localizing and segmenting the iris with no operator intervention is presented and has shown to be effective in various levels of illumination and for images with large field of view containing other facial features.
Journal ArticleDOI
Choroidal structures in polypoidal choroidal vasculopathy, neovascular age-related maculopathy, and healthy eyes determined by binarization of swept source optical coherence tomographic images.
Malini Bakthavatsalam,Danny Siu-Chun Ng,Frank H. P. Lai,Fang Yao Tang,Marten E. Brelen,Chi Wai Tsang,Timothy Yuk-Yau Lai,Carol Y. Cheung +7 more
TL;DR: Despite physiological changes of choroid vasculature due to aging, the choroidal morphology is different in PCV, neovascular AMD and healthy eyes, which has implication on disease pathogenesis.
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Survey over image thresholding techniques and quantitative performance evaluation
Mehmet Sezgin,Bulent Sankur +1 more