The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we propose a hand and wrist detection method for unobtrusive hand gesture interactions without attaching any devices on a user's hand below a head mounted display (HMD). For the enabling unobtrusive hand gesture interactions below a HMD where locates in front of upper body area of a user, we mounted a depth camera under a HMD. In order to provide fast and accurate hand and wrist detection,...
In this paper we will present our investigations related to contextual modeling for HMM-based handwritten Arabic text recognition. We will, first, discuss the justifications and the need for contextual modeling for handwritten Arabic text recognition. Next, we will discuss the issues related to contextual modeling for Arabic text recognition. Finally, we will present our novel class-based contextual...
We develop a Maximum Spanning Tree (MST) based parser using Edmonds' algorithm, which extracts an MST from a directed Line-of-Sight graph in two passes. First, symbols are segmented by grouping input strokes, and then symbols and symbol pair spatial relationships are labeled. The time complexity of our MST-based parsing is lower than the time complexity of CYK parsing with 2-D Context-Free grammars...
This paper presents a new representation for handwritten math formulae: a Line-of-Sight (LOS) graph over handwritten strokes, computed using stroke convex hulls. Experimental results using the CROHME 2012 and 2014 datasets show that LOS graphs capture the visual structure of handwritten formulae better than commonly used graphs such as Time-series, Minimum Spanning Trees, and k-Nearest Neighbor graphs...
The proliferation of social media has increased the competition among different memes, which can be free texts, trending catchphrases, or micro media. As human attention is limited, these memes compete with each other, and go in and out of popularity at a rapid pace, sometimes even faster than we can recognize. Popular memes often shape the mindsets of online communities, and also shed light on their...
The great part of fuzzy-linguistic research assumes the fuzzy complement as a good candidate for representing the meaning of negation. However, linguistic studies show that both acquisition and use of negation are way more complex than that. After reconsidering a way in which the negation is used in the natural language discourse, this paper focuses on reflecting a use of negation in domains in which...
We first make some considerations on the biological phenomenon of camouflage as a biological control adaptive process and discuss possible approaches for its mathematical modeling. We then focus on applications to interactive media using a simplified approach in which an L-system is imitated by means of a Markov chain. This model is implemented with computational vision and multichannel spatialization...
Automated prostate diagnoses and treatments have gained much attention due to the high mortality rate of prostate cancer. In particular, unsupervised (automatic) prostate segmentation is an active and challenging research. Most conventional works usually utilize handcrafted (low-level) features for prostate segmentation; however they often fail to extract the intrinsic structure of the prostate, especially...
In this paper, we present an experiment in the context of a child-robot interaction where we study the influence of the child-robot spatial arrangement on the child's focus of attention and the perception of the robot's performance. In the “Co-Writer learning by teaching” activity, the child teaches a Nao robot how to handwrite. Usually only face-to-face spatial arrangements are tested in educational...
Narrative games may offer reasoning on players' behavior or make-believe on players' personation as a pursuit to achieve specific goals. One of the goals is probably the intention to instill learning, which subconsciously provide information on the content of the game. However, there is lack of empirical evidence on game aesthetics for player's perceived learning. By means of expert review, this article...
Industrial product design is characterized by increasing complexity due to the high number of involved parameters, objectives, and boundary conditions, all typically changing over time. Population-based evolutionary design optimization targets to solve these kinds of application problems, offering efficient algorithms striving for high-quality solutions. An important factor in the optimization setup...
Sign Language Recognition (SLR) aims at translating the sign language into text or speech, so as to realize the communication between deaf-mute people and ordinary people. This paper proposes a framework based on the Hidden Markov Models (HMMs) benefited from the utilization of the trajectories and hand-shape features of the original sign videos, respectively. First, we propose a new trajectory feature...
A novel method for shape context realization has been presented in this paper and specific application of it in hand-drawn character recognition has been shown. In preprocessing stage, the endpoints of the digital straight line segments defining the object boundary are extracted. The four vertices of the minimum area rectangle bounding these extracted points are used as the reference points for shape...
The use of ICT to promote sustainable development, whether socioeconomic or human development, has increased over the past few decades. However, there is a need to ensure that ICT4D projects achieve their intended development outcomes. The Sustainable Livelihoods (SL) Framework provides a possible means to measure the impact of development programs/projects, by focusing on less disadvantaged household's...
This analysis is a contribution to the scholarly debate on how cyber power influences international relations. It answers the following question: In what ways can an actor apply CNA to dominate an opponent, and what may restrict him in this effort? It uses Schelling's (2008) argument for dividing power into coercion and brute force, and thus the paper distinguishes between actions that inflict harm...
Diffusion MRI(DMRI) provides us with the anatomy of the white matter fibers in the brain. Extracting shape information is a necessary step to analyze the deformation in the white matter fibers of a patient before and after brain surgery. We propose various measures with different invariance properties to explain deformations of different characteristics. The measures are presented for corticospinal...
To conserve and manage fish stocks in fisheries, people monitor the growth and quantities of fish by collected underwater videos and images. However, the efficiency of finding fish from videos and images is limited by manual operation. In this paper, we propose an automatic method to improve the efficiency of finding fish by shape matching. In our method, a segmentation method, Segmentation by Aggregating...
Zooplankton are the key components of marine food webs. The abundance of it influences the ocean ecological balance. To efficiently monitor species richness of zooplankton and protect marine environment, marine biologists and computer vision experts started to research automated zooplankton classification system with computer vision technologies. Most current research focuses on achieving high classification...
Finding the shortest path between two points on Earth is important especially in navigation. Since the Earth does not exactly follow one of the geometric shapes, calculating the distance on its surface is one of the important challenges. Haversine and Vincenty formulas are the two major formulas used for calculating distances on a sphere and elliptic shapes, respectively. Since the Earth is neither...
The paper proposes a dynamic shape context retrieval algorithm based on statistic. It selects shape's feature point's number dynamically, and statistics the number of target shape's feature points in different area block to form a contour feature point histogram. Finally, measuring the similarity is used dynamic programming algorithm. This method can selects the number of feature points adaptively,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.