The bubble sweep-down phenomenon around oceanographic research vessels generates acoustic disturbances. can be reproduced on a 1/30 scale ship model in wave and current circulating flume tank taking into account motions. Optical probe then used to measure locally the size velocity of bubbles generated by breaking waves. A comparison obtained results with more classical from detection image trac...

Vision impairment due to pathological damage of the retina can largely be prevented through periodic screening using fundus color imaging. However the challenge with large scale screening is the inability to exhaustively detect fine blood vessels crucial to disease diagnosis. In this work we present a computational imaging framework using deep and ensemble learning for reliable detection of blo...

This paper proposes a novel system for the automatic detection of important anatomical structures such as the Optic Disc (OD), Blood Vessels and Macula in digital fundus retinal images. The novelty is in extraction of blood vessels and localization of macula. OD localization is done using Principle Component Analysis (PCA) followed by an active contour based approach for accurate segmentation o...

Blood vessels usually have poor local contrast, and the application of existing edge detection algorithms yield results which are not satisfactory. An operator for feature extraction based on the optical and spatial properties of objects to be recognized is introduced. The gray-level profile of the cross section of a blood vessel is approximated by a Gaussian-shaped curve. The concept of matche...

The segmentation of blood vessels is a common problem in medical imaging and various applications are found in diagnostics, surgical planning, training and more. Among many different techniques, the use of multiple scales and line detectors is a popular approach. However, the typical line filters used are sensitive to intensity variations and do not target the detection of vessel walls explicit...

Segmented blood vessel from the fundus image provides useful clinical information for the diagnosis and monitoring of eye diseases. In this paper, blood vessels from the green channel of the fundus image are enhanced using a two dimensional matched filter which enhances the contrast of the blood vessel against the background. The contrast enhanced blood vessels are then segmented using line det...

Recent improvements in diagnostic methods have opened avenues for detection and treatment of (pre)malignant lesions at early stages. However, due to the lack of spontaneous tumor models that both mimic human carcinogenesis and allow direct optical imaging of the vasculature, little is known about the function of blood and lymphatic vessels during the early stages of cancer development. Here, we...