Indexing Techniques
Mostrando 1-12 de 25 artigos, teses e dissertações.
-
1. Optimizing similarity queries in metric spaces meeting user\ s expectation / Otimização de operações de busca por similaridade em espaços métricos
The complexity of data stored in large databases has increased at very fast paces. Hence, operations more elaborated than traditional queries are essential in order to extract all required information from the database. Therefore, the interest of the database community in similarity search has increased significantly. Two of the well-known types of similarit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/10/2012
-
2. Uma técnica de indexação de dados semi-estruturados para o processamento eficiente de consultas com ramificação
O surgimento de sistemas baseados na Web tem gerado uma vasta quantidade de fontes de documentos semi-estruturados, os quais necessitam ser indexados por sistemas de busca a fim de possibilitar a descoberta de documentos de acordo com necessidades de informação do usuário. Entretanto, um dos maiores desafios no desenvolvimento de técnicas de indexação
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2012
-
3. Recuperação de vídeos comprimidos por conteúdo / Content-based retrieval of compressed videos
Recent advances in the technology have enabled the increase of the availability of video data, creating large digital video collections. This has spurred great interest in systems that are able to manage those data in a efficient way. Making efficient use of video information requires the development of powerful tools to extract high-level semantics from low
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/11/2011
-
4. Uma avaliação sobre características espaço-temporais baseadas em invariantes de cor para reconhecimento de ações
Local spatiotemporal feature has been proved to be a powerful tool to represent latent patterns of moving objects in video scenes. In particular, recognition of human actions has been the principal focus for various growing applications, including video indexing, content-based video retrieval, video summarization, filtering of unwanted content, rating of mov
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/06/2011
-
5. Object tracking from compressed video using Kalman Filter and a novel spatiotemporal motion-vector filter.
Video Object Tracking plays a crucial role on several Computer Vision applications, such as Video Surveillance, Intelligent Transportation System (ITS), Human Machine Interface (HMI), Video Indexing and Shopping Behavior Analysis. Nevertheless, the processing power demanded by object tracking techniques still consists in a bottleneck to their wider adoption.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/10/2010
-
6. Object tracking from compressed video using Kalman Filter and a novel spatiotemporal motion-vector filter.
Video Object Tracking plays a crucial role on several Computer Vision applications, such as Video Surveillance, Intelligent Transportation System (ITS), Human Machine Interface (HMI), Video Indexing and Shopping Behavior Analysis. Nevertheless, the processing power demanded by object tracking techniques still consists in a bottleneck to their wider adoption.
Publicado em: 2010
-
7. Using linear algebra for protein structural comparison and classification
In this article, we describe a novel methodology to extract semantic characteristics from protein structures using linear algebra in order to compose structural signature vectors which may be used efficiently to compare and classify protein structures into fold families. These signatures are built from the pattern of hydrophobic intrachain interactions using
Genetics and Molecular Biology. Publicado em: 2009
-
8. Vocábularios visuais aplicados à detecção de edifícios em fotografias históricas
In this work, we propose a technique based on a bag-of-keypoints representation to identify images containing buildings in the photographic collection of Arquivo Público Mineiro (APM), the Archives of the State of Minas Gerais. We evaluate the proposed work using digitized versions of the original. Digitization is an effective procedure to make collections
Publicado em: 2009
-
9. Development of a fitosanity program for Potyvirus and Potexvirus / Desenvolvimento de um programa de fitossanidade para Potyvirus e Potexvirus
The potato culture (Solanum tuberosum L.) represents the fourth major vegetal production in the world, reaching productivity indexes which overcome that of cerals in 5 times. Potato crop may be affected by several disease. Actually, some references point out near 40 in a total of 70 disorders are caused by viral agents. Among the most important viruses of po
Publicado em: 2009
-
10. Uso de sintagmas nominais na classificação automática de documentos eletrônicos
This research work presents a proposal for the classification of electronic documents using techniques and algorithms based on natural language processing and noun phrases indexing along with plain keywords. Two tools, OGMA and Weka, were used for the experiments proposed. OGMA was developed by the author to automate the extraction of noun phrases and to per
Publicado em: 2008
-
11. Indexação automática de acórdãos por meio de processamento de linguagem natural
Indexing is an area that has been researched for a long time, crucial tool to information retrieval quality. Automatic indexing is a more recent area, in which results are improved with the evolution of artificial intelligence techniques. As judicial claims increase repeatedly, Countrys courthouses, Tribunal de Justiça do Distrito Federal e dos Territórios
Publicado em: 2007
-
12. Evaluating human-computer interaction techniques for content-based image retrieval systems through a case study / Análise e avaliação de técnicas de interação humano-computador para sistemas de recuperação de imagens por conteúdo baseadas em estudo de caso
The content-based image retrieval (CBIR) is a challenging area of the computer science that has been growing in a very fast pace in the last years. CBIR systems employ techniques for extracting features from the images, composing the features vectores, and store them together with the images in data bases management system, allowing indexing and querying. CB
Publicado em: 2007