Contour Advection with Surgery (CAS) is used to simulate turbulent premixed combustion. This paper presents results from calculations of methane/air mixtures and ethylene/air mixtures with equivalence ratios ranging from 0.8 to 1.6 with different turbulence intensities. The positions, thicknesses and half-angles of the turbulent flame zones are compared for each case by plotting contour maps of...

Medical images are noisy images and its processing is a complex one. The boundary detection of aortas in cardiovascular Magnetic Resonance (MR) images is difficult. This paper presents a vector image and edge map based boundary detection of aortas in cardiovascular MR images and is implemented using MATLAB. The performance of the edge vector and edge map boundary detection method for detecting ...

Module-1 : Computation of gradient directions. Reconstruction of a set of imperfect contour curves which is extracted : Assignment of discrete height to contour curves. from a topographical map is one of the important problems in the field Module-3 : Reconstruction of three-dimensional configurations. of geometrical information processing. This Paper reports a novel 1, order to make our explana...

It is known that neurons in area V2 (the second visual area) can signal the orientation of illusory contours in the primate. Whether area V1 (primary visual cortex) can signal illusory contour orientation is more controversial. While some electrophysiology studies have ruled out illusory signaling in V1, other reports suggest that V1 shows some illusory-specific response. Here, using optical im...

We propose a new method for contour tracking in video. The inverted distance transform of the edge map is used as an edge indicator function for contour detection. Using the concept of topographical distance, the watershed segmentation can be formulated as a minimization. This new viewpoint gives a way to combine the results of the watershed algorithm on different surfaces. In particular, our a...

This paper presents an active contour tracking algorithm based on the particle filter for a non-rigid object in cluttered scenes. We decompose the non-rigid contour tracking problem into three parts as transition estimation, deformation detection, and shape regulation. We use an affine transform dynamic model and employ the particle filter to estimate the parameters. We generate a probabilistic...