Image Processing :: essays research papers

Adaptive regularize abidance Tracing algorithmABSTRACTIn this paper we are press release to present a new force limn tracing algorithmic program called Adaptive Contour Tracing Algorithm. The algorithm can peculiarity open and unopen discontinuous digital shapes and return an ordered groom of saltation signalises that represent the cast of the shape. Unlike other algorithms that return boundary points that are part of the traced shape, our algorithm returns background points that are adjacent to the shapes variety. Furthermore, the algorithm is not hindered by shapes that are noisy and exhausted as it can adapt to interruptions in the shapes contour using a pre-set tolerance and is able to scan multiple neighbors of a given point. The algorithm has a low complexity and no restrictions on the type or size of the traced shape. The raiseed ordered set of boundary points represents the contour of a given shape and is important for curvature-based shape descriptors. Catego ries and Subject DescriptorsI.4.6 Image bear on and Computer Vision Segmentation V Edge and feature detection, Pixel sorting General TermsAlgorithms.KeywordsImage Processing Contour Tracing Shape Boundary Extraction.1. INTRODUCTIONContour tracing is an important process in boundary-based shape interconnected. All shapes are represented by a blueprint of pixels and the contour pixels are usually a small subset of that pattern. Curvature-based shape matching methods rely on the contour pixels to describe the irregularities in shapes and a original contour-tracing algorithm is needed to extract the boundary of shapes. If the shape has holes then some other hole search algorithm need to be applied to extract the hole pattern and such an algorithm is not part of this article.We develop a sequential contour-tracing algorithm denoted the Adaptive Contour Tracing Algorithm. The algorithm computes the ring contour of any shape and adapts to all types of unsympathetic curve represent ations whether they are filled or partially filled digital shapes. Any pixel, 1-pixel wide lines, and full shapes could be traced and represented by closed curves. The algorithm also accounts for discontinuities in the shape contour and can stretch nearby pixels.The contour trace starts from the top left point or pixel closest to the shape and proceeds clockwise following the meet of the contour of the shape rather than the contour itself. The path around the contour is traced in a look-forward sweep pattern to find the next surrounding point that is closest to the contour. The path is then closed when the start point is found.