This paper presents an edge-based segmentation technique that allows to process quickly very large range images. The proposed technique consists of two stages. First, a binary edge map is generated; then, a contour detection strategy is responsible for the extraction of the dizerent boundaries. The jirst stage generates a binary edge map based on a scan line approximation technique. There is a ...

Unbalanced distribution of population in a country like Iran as well as accelerating urbanization and environmental degradation, both arising from incorrect location of industrial areas, are two problems that require appropriate industrial development policies to get resolved. Considering the expansion of industrial areas along with their role in contamination of the environment, it is necessar...

A radiance environment map pre-integrates a constant surface reflectance with the lighting environment. It has been used to generate photo-realistic rendering at interactive speed. However, one of its limitations is that each radiance environment map can only render the object which has the same surface reflectance as what it integrates. In this paper, we present a ratio-image based technique t...

This paper introduces how to apply rough set classification and attribute reduction method in map generalization and provides solutions to several special cases arising in the map spatial data processing. Unlike the analysis in the past which focused solely on the attribute data of map, in this paper, rough set attribute decision table specific for the features of map data is created on the bas...

We present an application in topological map building and localization with a high resolution omnidirectional camera. A visual map uses sift features in combination with affinely invariant Harris corners as its feature points. We use an automatic scheme to find correspondences from a video sequence to create the map. Loop-back is also detected automatically while the map is built. For localizat...

In this paper we propose a new speech enhancement technique based on the application of the Maximum a Posterior Estimator of Magnitude-Squared Spectrum (MSS-MAP) in Stationary Bionic Wavelet Domain. This technique consists at first step in applying the Stationary Bionic Wavelet Transform (SBWT) to the noisy speech signal and then applying the Maximum A Posterior Estimator of MagnitudeSquared Sp...

This paper presents a maximum a posteriori (MAP) equalizer for bandlimited signals on frequency selective fading channels. A key contribution is the way in which the state-space of the MAP trellis is expanded for the purpose of joint channel estimation and equalization. The fading channel is estimated by coupling minimum mean square error techniques with the expanded MAP trellis. The symbol-by-...

We present an application in topological map building and localization with a high resolution omnidirectional camera. A visual map uses sift features in combination with affinely invariant Harris corners as its feature points. We use an automatic scheme to find correspondences from a video sequence to create the map. Loop-back is also detected automatically while the map is built. For localizat...