This paper presents the results of a new approach for binarization of text images. The new technique uses the fuzzy C-means clustering algorithm to simulate the clustering performed by the human visual system. The clustering process was applied to eleven text images. All of them have black text but the background change in color. As a mean of comparison, binarization using the image histogram w...

Recognition of mathematical notation involves two main components: symbol recognition and symbol-arrangement analysis. Symbol-arrangement analysis is particularly difficult for mathematics, due to the subtle use of space in this notation. We begin with a general discussion of the mathematics-recognition problem. This is followed by a review of existing approaches to mathematics recognition, inc...

We build a fast video shot retrieval system in the context of the NIST TREC Video 2009 evaluation campaign. We compare our efficient Profile Entropy Features (PEF) to usual features, using various classifiers. These PEF are derived using the projection in the horizontal and vertical orientations. These features are then fed to SVM or KNNG classifiers to produce the keyframe ranks, from which we...

In this paper, we present a new semiautomatic method to reconstruct 3D facial model for animation from two orthogonal pictures taken from front and side views. The method is based on extracting the hair and face outlines and detecting interior features in the region of mouth, eyes, etc. We show how to use structured snakes for extracting the profile boundaries and facial features. Then DFFD, a ...

Structural Health Monitoring (SHM) system requires a fast and accurate algorithm for defect detections in the large structures like aircraft skins for which Lamb wave tomography (LWT) appears to be very powerful technique, as their propagation properties depend on the thickness and the mechanical properties of the material. Projection data is collected by electronically scanning an array of ult...

A top-down page segmentation technique known as the recursive X-Y cut decomposes a document image recursively into a set of rectanguzar blocks. This paper proposes that the recursive X-Y cut be implemented using bounding bozes of connected components of black pixels instead of using image pizels. The advantage is that great improvement can be achieved in computation. In fact, once bounding boxe...

A coherent multiple imaging technique for use in optical microlithography was studied. The technique involves placing a thin Fabry-Perot etalon between the mask and the projection lens of an optical stepper. An optical lithographic computer simulation tool, Prolith/2, was used to evaluate the aerial image profile obtained for extended mask structures such as typical contact hole arrays and line...

5 In kinesiology research, fringe projection profilometry is used to measure 6 the surface shape and profile of ex-vivo beating animal heart. Deformation 7 of projected fringe pattern will be caused by non-flat shape of surface and 8 thus used to reconstruct the surface. In this course project, multiple-layer 9 neural network (MLNN) is used to recover the gradient information of the 10 surface ...

Field ion microscopy (FIM), transmission electron microscopy (TEM) and computer simulation techniques have been used to experimentally investigate the field ion image geometry. Electron micrographs and electron diffraction patterns were obtained from tungsten specimens after controlled amounts of field evaporation. From a knowledge of the changes in the image dimensions as a function of the var...

This paper presents a technique for segmentation of printed Urdu text images into lines and ligatures, a key pre-processing step in Urdu Optical Character Recognition (OCR) systems. Unlike classical projection profile based line segmentation methods, the proposed scheme successfully segments overlapping and touching lines. Once the lines are segmented, ligatures are extracted from each text lin...