The 3D components of today’s user interfaces are still underdeveloped. Direct interaction with 3D objects has been limited thus far to gestural picking, manipulation with linear transformations, and simple camera motion. Further, there are no toolkits for building 3D user interfaces. We present a systemwhich…
This paper establishes some fundamental principles for the retrievl and storage of delay-sensitive multimedia data. Delay-sensitive data include digital audio, animations, and video. Retrieval of these data types from secondary storage has to satisfy certain time constraints in order to be acceptable to the user.…
The 3D components of today's user interfaces are still underdeveloped. Direct interaction with 3D objects has been limited thus far to gestural picking, manipulation with linear transformations, and simple camera motion. Further, there are no toolkits for building 3D user interfaces. We present a system…
Geometric matching in general is a difficult unsolved problem in computer vision. Fortunately, in many pratical applications, some a priori knowledge exists which considerably simplifies the problem. In visual navigation, for example, the motion between successive positions is usually either small or approximately known, but…
Henrique S. Malvar and David H. Staelin were awarded the IEEE Signal Processing Society Best Paper Award in Image (Video) and Multidimensional Signal Processing for the paper entitled, The LOT: Transform Coding Without Blocking Effects, IEEE Transactions on Acoustics, Speech, and Signal Processing, Volume 37,…
The standard backpropagation learning algorithm for feedforward networks aims to minimise the mean square error defined over a set of training data. This form of error measure can lead to the problem of over-fitting in which the network stores individual data points from the training…
We have developed an expert system for diagnosis of efficiency problems for large gas turbines. The system relies on a model-based approach that combines an expert's probabilistic assessments with statistical data and thermodynamic analysis. The system employs a causal probabilistic graph, called a belief network,…
We present a new type of HMM for vowel-to-consonant (VC) and consonant-to-vowel (CV) transitions based on the locus theory of speech perception. The parameters of the model can he trained automatically using the Baum-Welch algorithm and the training procedure does not require that in- stances…
Many code generator generators use tree pattern matching and dynamic programming. This note describes a simple program that generates matchers that are fast, compact, and easy to understand. It is simpler than common alternatives: 200-700 lines of Icon or 950 lines of C versus 3000…
We exploit the properties of the multi-layer perceptron to develop a neural network approach to the feedback control of plasma position and shape in a Tokamak experiment. The requirements of large bandwidth and high precision have led us to develop a custom hybrid analogue–digital hardware…
No abstract available.
Copying garbage collectors are becoming the collectors of choice for very high-level languages and for functional and object-oriented languages. Copying collectors are particularly efficient for large storage regions because their execution time is proportional only to the amount of accessible data, and they identify and…
