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Since the space charge accumulation sometimes enhances the electric field in an insulating material, it can be thought as a reason of unexpected PD (partial discharge) generation. Therefore, measurements of the space charge in the insulating layer of the winding are required. The space charge accumulation in the insulating material is usually carried out using the PEA (pulsed electro-acoustic) method...
The GRID/form let representation of planar shape has a number of nice properties, but there are also limitations: it is slow to converge for shapes with elongated parts, and it can be sensitive to parameterization as well as grossly ill-conditioned. Here we describe a number of innovations on the GRID/form let model that address these problems: 1) By generalizing the form let basis to include oriented...
This paper presents a new way to transmit and retrieve an information signal via chaotic systems based on shape synchronization. In contrast to existing schema with chaotic synchronization, the scheme is adopted for the purpose of faster synchronization and high security. Firstly, the drive signals are synthesized chaotic signal instead of drive variables in order to high security. Secondly, the drive...
This paper proposes a fast motion-compensated structured-light method that realizes 3-D shape measurement of moving object at 500 frames per second (fps) by using a high-frame-rate synchronized camera-projector system. In this method, multiple light patterns coded with an 8-bit gray code are projected on the measured scene at 1000 fps; images captured simultaneously are processed in real time for...
Extracting anthropometric or tailoring measurements from 3D human body scans is important for applications such as virtual try-on, custom clothing, and online sizing. Existing commercial solutions identify anatomical landmarks on high-resolution 3D scans and then compute distances or circumferences on the scan. Landmark detection is sensitive to acquisition noise (e.g. holes) and these methods require...
Reflection symmetry is an important feature of an object. Main goals in symmetry analysis include quantifying the amount of asymmetry in an object and finding the nearest symmetric object to a given asymmetric one. Samir et al. [19] achieved these goals using a shape distance between representations of curves termed square-root velocity functions. We extend their work by defining shape descriptors...
In this paper, we propose a new book digitization system that can obtain high-resolution document images while flipping the pages automatically. The distinctive feature of our system is the adaptive capturing that has a crucial role in achieving high speed and high resolution. This adaptive capturing requires observing the state of the flipped pages at high speed and with high accuracy. In order to...
We report corneal topography of fish eye using low coherence interference microscopy. This technique is non-invasive determination of refractive index variation which will be helpful in finding corneal power as a function of wavelength.
With the emergence of the SHREC Contest, the retrieval performance of non-rigid 3D shapes has witnessed a great improvement. This paper mainly discusses how to improve the stability and discriminate ability for non-rigid 3D shape retrieval. We first introduce a robust global biharmonic (GBI) feature, which has achieved a balance between global and local shape properties. Then, a combination strategy...
It is surprising that last two decades many works in time series data mining and clustering were concerned with measures of similarity of time series but not with measures of association that can be used for measuring possible direct and inverse relationships between time series. Inverse relationships can exist between dynamics of prices and sell volumes, between growth patterns of competitive companies,...
To focus on objects at various distances, the lens of the eye must change shape to adjust its refractive power. This change in lens shape causes a change in the shape of the iris surface which can be measured by examining the curvature of the iris. This work isolates the variable of iris curvature in the recognition process and shows that differences in iris curvature degrade matching ability. To...
In this paper we present a novel local group based method for extracting skewed and curved handwritten text lines in Arabic document images. We first detect all connected components and use a Support Vector Machine (SVM) to classify them either as Piece of Arabic Word (PAW) or diacritic. We then, use novel distance measures like sigmoid function based shapes to calculate the nearest neighbors for...
Corneal topographer is now widely used in clinical and scientific work to assess the shape of the cornea, and it is important to know how well they perform. The studies have been carried out to test their accuracy and precision by using calibrated test surfaces internationally, while there are only few practical studies in China. In this paper, three test surfaces that resemble typical corneal shapes,...
The objective of this paper is to describe a Computational Intelligence based Automatic Body Conditioning System for cattle we have called Automatic Body Condition Assessment (ABiCA). It is an automatic body condition scoring system for dairy cattle that aims to overcome the flaws of the subjective and time consuming scoring task that is usually carried out by experts. No special set-ups are needed...
Migratory cells, for example human retinal epithelial (RPE) cells, exhibit highly variable morphology. This makes it difficult to use traditional methods, such as the landmark based Procrustes analysis or feature based analysis, to quantitatively represent their shapes. We propose a novel framework to generate a low-dimensional representation of highly variable cell shapes. The framework lends itself...
Efficacious retrieval of similar shapes from large image databases is still a challenging problem. In recent works about shape retrieval, methods based on Dynamic Space Warping (DSW) and descriptors with contour information have had a significant presence. This paper introduces a technique for Content-Based Image Retrieval (CBIR) that encompasses a robust corner detector and a new shape descriptor...
This paper proposes a multiscale 3D keypoint detection method based on local weighted dissimilarity measure. At first, compute the local weighted dissimilarity measure of each vertex at different scale. Then determine the detecting scale of each vertex. Finally compare the local weighted dissimilarity measure of each vertex with those of its neighboring surface points at its detecting scale. The keypoint...
This paper originally proposes an intelligent recommender system for supporting personalized fashion design. Based on two models characterizing relations between human body measurements and human perceptions on human body shapes, we develop the criteria permitting to evaluate a set of new design styles for a specific garment customer and a desired fashion theme. In this approach, the intelligent techniques,...
We define an iris detection algorithm that performs an order of magnitude faster than the state of the art, while preserving accuracy. The algorithm isolates the pupil boundary by extracting image edges, then finding the largest contiguous set of points that satisfy the circularity criterion and contain mostly dark pixels. The iris/sclera boundary is found by horizontally and simultaneously searching...
State-of-the-art laser phonomicrosurgery (LP) used for the treatment of laryngeal abnormalities involves complex otolaryngological surgical techniques. It relies heavily on surgeon dexterity, requiring significant psychomotor skills. Equipment scale and size, laser operative distance, and the anatomically small nature of the vocal folds all combine to compound the surgical challenges. An objective...
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