Search results for "methodologies"
showing 10 items of 2106 documents
Principal Component and Neural Network Analyses of Face Images: What Can Be Generalized in Gender Classification?
1998
We present an overview of the major findings of the principal component analysis (pca) approach to facial analysis. In a neural network or connectionist framework, this approach is known as the linear autoassociator approach. Faces are represented as a weighted sum of macrofeatures (eigenvectors or eigenfaces) extracted from a cross-product matrix of face images. Using gender categorization as an illustration, we analyze the robustness of this type of facial representation. We show that eigenvectors representing general categorical information can be estimated using a very small set of faces and that the information they convey is generalizable to new faces of the same population and to a l…
Scatter Search for the Point-Matching Problem in 3D Image Registration
2008
Scatter search is a population-based method that has recently been shown to yield promising outcomes for solving combinatorial and nonlinear optimization problems. Based on formulations originally proposed in the 1960s for combining decision rules and problem constraints, such as the surrogate constraint method, scatter search uses strategies for combining solution vectors that have proved effective in a variety of problem settings. We present a scatter-search implementation designed to find high-quality solutions for the 3D image-registration problem, which has many practical applications. This problem arises in computer vision applications when finding a correspondence or transformation …
Population and Query Interface for a Content-Based Video Database
2002
In this paper we describe the first full implementation of a content-based indexing and retrieval system for MPEG-2 and MPEG-4 videos. We consider a video as a collection of spatiotemporal segments called video objects; each video object is a sequence of video object planes. A set of representative video object planes is used to index each video object. During the database population, the operator, using a semi-automatic outlining tool we developed, manually selects video objects and insert some semantical information. Low-level visual features like color, texture, motion and geometry are automatically computed. The system has been implemented on a commercial relational DBMS and is based on…
A Method Based on Multi-source Feature Detection for Counting People in Crowded Areas
2019
We propose a crowd counting method for multisource feature fusion. Image features are extracted from multiple sources, and the population is estimated by image feature extraction and texture feature analysis, along with for crowd image edge detection. We count people in high-density still images. For instance, in the city’s squares, sports fields, subway stations, etc. Our approach uses a still image taken by a camera on a drone to appraise the count in the population density image, using a kind of sources of information: HOG, LBP, CANNY. We furnish separate estimates of counts and other statistical measurements through several types of sources. Support vector machine SVM, classification an…
Shared feature representations of LiDAR and optical images: Trading sparsity for semantic discrimination
2015
This paper studies the level of complementary information conveyed by extremely high resolution LiDAR and optical images. We pursue this goal following an indirect approach via unsupervised spatial-spectral feature extraction. We used a recently presented unsupervised convolutional neural network trained to enforce both population and lifetime spar-sity in the feature representation. We derived independent and joint feature representations, and analyzed the sparsity scores and the discriminative power. Interestingly, the obtained results revealed that the RGB+LiDAR representation is no longer sparse, and the derived basis functions merge color and elevation yielding a set of more expressive…
Early Television Video Game Tournaments as Sports Spectacles
2020
This article looks at two televised video game tournaments from the 1980’s from the viewpoint of sports spectacle. Through the analysis of the television episodes and comparison to modern eSports-scene, the aim is to see, if there were similarities or differences between sports broadcasting and video game broadcasting at the time. The article suggests that because of visual choices made in sports broadcasting, the video game tournaments adapted this style coincidentally, which might have affected the style of eSports-broadcasting later. nonPeerReviewed
Universal method to determine acidic licit and illicit drugs and personal care products in water by liquid chromatography quadrupole time-of-flight
2016
Graphical abstract
MÉTODOS CENTRADOS EN EL APRENDIZAJE, IMPLICACIÓN DEL ALUMNO Y PERCEPCIÓN DEL CONTEXTO DE APRENDIZAJE EN ESTUDIANTES UNIVERSITARIOS
2017
En este trabajo se pretendía valorar la incidencia de métodos centrados en el aprendizaje sobre diversas capacidades/habilidades del estudiante y sobre su percepción del entorno de aprendizaje diseñado por el profesor. La muestra estuvo constituida por 126 estudiantes de primer curso de la Universidad Católica de Valencia de tres grupos cursando grados de Maestro de Educación Primaria y Educación Infantil, siendo impartida la materia de los grupos de Primaria por un profesor y la del grupo de Infantil por otro. Se utilizó un diseño preexperimental, con medidas de pretest y postest, mediante el cuestionario SEQ; además los alumnos valoraron los métodos utilizados por sus profesores con un cu…
Enterprise Architecture Compliance: the Viewpoint of Evaluation
2008
First published in the Proceedings of the European Conference on Information Management and Evaluation (ECIME 2007), September 20-21, 2007, Montpellier, France Enterprise Architecture (EA) provides a holistic view of entire organization, including various viewpoints such as business, information, systems and technology. It is of interest for academics and practitioners alike. It has been suggested that EA is an approach for controlling the complexity and constant changes in the organization and its business environment, assisting organizations in realizing a multitude of positive business impacts. As the organization transforms from the current EA state towards the improved target state thr…
Analysis of the current State of Enterprise Architecture Evaluation Methods and Practices
2008
First published in the Proceedings of the European Conference on Information Management and Evaluation (ECIME 2007), September 20-21, 2007, Montpellier, France Today, more and more organizations adopt enterprise architecture (EA) processes to cope with the changing environment and to improve their performance and competitiveness. However, the evaluation of EA regarding its quality and benefits is rather difficult. The studies of previous research resulted in the recognition that there is no methodology for enabling the EA evaluation by considering the whole EA. Therefore, this paper presents and analyses the current state of methods and practices to evaluate EA from different viewpoints. Th…