In this research we present Bidirectional exact pattern matching algorithm [20] in detail. Bidirectional (BD) exact pattern matching (EPM) introduced a new idea to compare pattern with Selected Text Window (STW) of text string by using two pointers (right and left) simultaneously in searching phase. In preprocessing phase Bidirectional EPM algorithm improved the shift decision by comparing righ...

Inexact graph matching is a fundamental problem in computer vision applications. It crops up whenever a correspondence between two structures must be determined in the presence of structural and attribute noise. Despite the importance of the problem, graph matching techniques in computer vision tend to be extremely task specific, and sometimes lack the power a general approach would have. For e...

We present an animation in Java for exact string matching algorithms [4]. This system provides a framework to animate in a very straightforward way any string matching algorithm which uses characters comparisons. Already 27 string matching algorithms have been animated with this system. It is a good tool to understand all these algorithms.

The classical pattern matching paradigm is that of seeking occurrences of one string in another, where both strings are drawn from an alphabet set Σ. In the parameterized pattern matching model, a consistent renaming of symbols from Σ is allowed in a match. The parameterized matching paradigm has proven useful in problems in software engineering, computer vision, and other applications. In clas...

The Procrustes matching (PM) problem is the problem of finding the optimal rigid motion and labeling of two point sets so that they are as close as possible. Both rigid and non-rigid shape matching problems can be formulated as PM problems. Recently [14] presented a novel convex semi-definite programming relaxation (PM-SDP) for PM which achieves state of the art results on common shape matching...

1. INTRODUCTION Content-based music information retrieval provides ways for people to locate and retrieve music based on its musical characteristics, rather than on more familiar metadata such as composer and title. The potential utility of such systems is attested to by music librarians, who report that library patrons often hum or whistle a phrase of music and ask them to identify the corresp...

Problem statement: Template matching is a famous methodology that has a wide range of applications in image and signal processing. For a template and input image, template matching methodology finds the partial input image that is most closely matches the template image in terms of specific criterion such as the Euclidean distance or cross-correlation. Approach: In this study, a fast and robust...

More than 120 algorithms have been developed for exact string matching within the last 40 years. We show by experiments that the näıve algorithm exploiting SIMD instructions of modern CPUs (with symbols compared in a special order) is the fastest one for patterns of length up to about 50 symbols and extremely good for longer patterns and small alphabets. The algorithm compares 16 or 32 characte...

Given a pattern string P of length n consisting of δ distinct characters and a query string T of length m, where the characters of P and T are drawn from an alphabet Σ of size ∆, the exact string matching problem consists of finding all occurrences of P in T . For this problem, we present a randomized heuristic that in O(nδ) time preprocesses P to identify sparse(P ), a rarely occurring substri...

Many RNA structures are assembled from a collection of RNA motifs, which appear repeatedly and in various combinations. Identification of RNA structural motifs will enhance our understanding of RNA structures and functions. Searching for secondary structural patterns in sequence databases is the basic technique and fundamental problem for extracting and identifying such motifs. A number of algo...