Many of the original or classical image segmentation techniques like thresholding or edge detection techniques are very susceptible to noise. Another issue that causes problems are gaps in the boundary. As seen in chapter two watershed methods also perform poorly under these conditions. The snake or parametric active contour was developed to handle these problems. They perform well in spite of ...

This study presents a novel automatic system for detecting the intimal and adventitial layers of the far common carotid artery (CCA) by applying the snake techniques. Cohen’s snake is also modified and some criteria are added for our applications. In addition, the oscillating problem of using snakes is solved by properly choosing the time step from analysis of the frequency response of the filt...

Roads fragment our landscape, posing a severe threat to the persistence of wildlife populations through losses of individuals to direct mortality and decreased connectivity. Although they possess a particular suite of life history characteristics that make them especially vulnerable, snakes tend to be underrepresented in research examining vertebrate road mortality. Here, we report a statistica...

Most snake venom toxins are proteins, and participate to envenomation through a diverse array of bioactivities, such as bleeding, inflammation, and pain, cytotoxic, cardiotoxic or neurotoxic effects. The venom of a single snake species contains hundreds of toxins, and the venoms of the 725 species of venomous snakes represent a large pool of potentially bioactive proteins. Despite considerable ...

PURPOSE Ocular manifestations in snake-bite injuries are quite rare. However, the unusual presentations, diagnosis and their management can pose challenges when they present to the ophthalmologist. Early detection of these treatable conditions can prevent visual loss in these patients who are systemically unstable and are unaware of their ocular condition. To address this, a study was conducted...

Automatic extraction of objects from images has been a topic of research for decades. The main aim of these researches is to implement a numerical algorithm in order to extract the planar objects such as buildings from high resolution images and altitudinal data. Active contours or snakes have been extensively utilized for handling image segmentation and classification problems. Parametric acti...

The reverence with which the average Hindu regards a snake is well known. In the Hindu mythology, Shesh Nag is believed to have protected God Brahma, and God Shiva gave the mark of Omega on the hood of the cobra. Shiva is depicted with snakes coiling around his neck and a snake emerging from the tuft of his hair. The snake is an emblem of the mystery of death, as well as of healing. If a snake ...

Positional information along the dorsal-ventral axis of the Drosophila embryo is acquired through a signal transduction pathway which employs a extracellular protease cascade. The sequential activation of serine protease zymogens results in the ventrally localized production of a ligand in the perivitelline space of the embryo. Snake is one of several serine proteases which function in generati...