Technical Reports (Computing Science)
Technical Reports Collection
Items in this Collection
- 14Nascimento, Mario
- 2Chitkara, Vishal
- 2Coman, Alexandru
- 2Falcao, Alexandre
- 2Malhotra, Baljeet
- 2Nikolaidis, Ioanis
- 5Database Systems
- 2Color histograms
- 2Color-based image retrieval
- 2Communication Networks
- 2Content-based image retrieval
- 2Sensor networks
Technical report TR05-23. Wireless sensor networks are made of autonomous devices that are able to collect information, store it, process it and share it with other devices. Such framework can be used to efficiently query spatiotemporal data, e.g., for monitoring humidity and temperature levels...
Technical report TR09-05. It is a well known fact that minimizing energy consumption in Wireless Sensor Networks (WSNs) is crucial for its usability; and minimizing the flow of data is one way to achieve that. Most WSN models assume the existence of a base station where query results could in...
Mobile objects can be equipped with sensors enabling them to collect data, as well as answer queries remotely and in real-time. For that, one needs to be able to effectively route queries from a base station to the queried object in an efficient way, i.e., with minimum energy-cost and/or minimum...
On the Trade-Off Between User-Location Privacy and Queried-Location Privacy in Wireless Sensor NetworksDownload
Technical report TR09-07. By eavesdropping on a user's query in a sensor network, an adversary can deduce both the user's location and his/her area of interest. In many domains it is desirable to guarantee privacy of both places. Relying on the principle of k-anonymity, we propose an effective...
Technical report TR08-02. We consider the problem of vehicle classification using acoustic signals captured within a sensor network. The sensors perform collaborative decision and/or data fusion in a distributed and energy efficient manner. We present a distributed cluster-based algorithm,...
Technical report TR02-01. Research in information hiding has grown explosively. A large number of techniques have been proposed to discourage copyright infringement, tampering and unauthorized distribution of digital media (e.g. video, audio, and images). In this paper, we provide an overview of...
Content-Based Image Retrieval Using Binary Signatures
Technical report TR00-18. Significant research has focused on determining efficient methodologies for retrieving images in large image databases. In this paper, we propose two variations of a new image abstraction technique based on signature bit-strings and an appropriate similarity metric. The...
Color Based Image Retrieval Using Signature Trees
Technical report TR01-02. Significant research has focused on determining efficient methodologies for effective and speedy retrieval in large image databases. Towards that goal, the first contribution of this paper is an image abstraction technique, called VBA, based on signature bit-strings and...
Cell Histograms Versus Color Histograms for Image Representation and Retrieval
Technical report TR01-01. Color is a commonly used feature for realizing content-based image retrieval (CBIR). In this context, this paper presents a new approach for CBIR which is based on well known and widely used color histograms. Previous approaches have used a single global color...
Benchmarking Access Structures for High-Dimensional Multimedia Data
Technical report TR99-05. In multimedia databases it is usual to map objects into feature vectors in high-dimensional spaces. In order to speed query processing access structures, or indices, are required. Unfortunately, in the case of similarity queries, which are in fact nearest neighbor ...