Global ETD Search
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Showing 1 to 4 of 4 for “"directional filtering"”.
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Image enhancement techniques applied to solar feature detection
… morphological closing operations with multi-directional linear structuring elements to extract elongated shapes in the image. After logical union of directional filtering results, the remaining noise is removed from the final outcome using morphological dilation and erosion with a circular …
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Trainable Pre-Filtering for Deep Neural Networks and Applications
… unified framework that integrates trainable pre-filtering layers inspired by classical signal processing directly into deep neural network architectures. The framework embeds physically meaningful operations—such as directional filtering, Sobel gradients, Gaussian and low-pass smoothing, …
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Interprétation structurale des linéaments par traitement d'image satellitaire : cas des sous-provinces d'Abitibi et d'Opatica (Québec)
… approach, based on the enhancement and directional filtering of Landsat-S TM images, helped establish the lineament map of the study area. Statistical analysis of the map using directional indicators, as well as a spatial analysis, helped detect morphological différences in the linéament …
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Characterising Spatial and Temporal Ionospheric Variability with a Network of Oblique Angle-of-arrival and Doppler Ionosondes
… the AoA observations, as well as understand the directional filtering effect imposed by the path geometry. In some cases, a set of TID parameters can be determined by eye, but in others automatic parameter inversion techniques may be more viable. Two such techniques were implemented but results …