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      Analysing the enhancement edges of the Bouguer gravity anomaly map using sunshading method (area of the Tangier-Tetuan, Morocco) Translated title: Análisis de las anomalías de la gravedad de Bouguer usando el método de sombreado (área de Tangier, Tetuan, Marruecos)

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          Abstract

          Sunshading is a powerful tool for the enhancement of edges in images. Given the azimuth and elevation of a source of illumination, it calculates the reflectance from a surface which is composed of the data to be interpreted. It is a standard tool used in the interpretation of geophysical potential field data. Aerial and terrestrial gravimetric surveys were carried out in the region of Tangier-Tetuan. From the observed and measured data of gravity Bouguer a gravity anomaly map was prepared. This paper reports the results and interpretations of the sunshaded maps of Bouguer gravity anomaly of the Tangier-Tetuan area using image processing. Filtering analysis based on classical image process. Operator image process, such as contrast enhancement, is used as well. This paper also presents the results obtained from this image processing analysis of the enhancement edges of the Bouguer gravity anomaly map of the Tangier-Tetuan zone.

          Translated abstract

          El sombreado es una poderosa herramienta para destacar los bordes de un objeto presente en una imagen. Conociendo la dirección y la elevación de la fuente de iluminación, se puede calcular la reflectancia de las distintas superficies representadas por los datos y así facilitar la interpretación de los mismos. El sombreado se ha convertido en una herramienta universal a la hora de interpretar datos geofísicos de campo de tipo potencial. Datos gravimétricos aéreos y terrestres se obtuvieron en la región de Tanger-Tetuan. A partir de los datos observados y medidos se elaboró el mapa de las anomalías de gravedad de Bouguer. En este artículo se presentan los resultados obtenidos, y su interpretación, al aplicar el método del sombreado aplicado a los mapas de las anomalías de la gravedad de Bouguer del área de Tanger-Tetuan usando técnicas de procesamiento de imágenes.

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          Most cited references13

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          Hill shading and the reflectance map

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            Golden Surfer (Win32) software, version 6.04

            (1997)
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              D. Backström Image Enhance 3.2.4 Drag & Drop: User’s Guide

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                rfiua
                Revista Facultad de Ingeniería Universidad de Antioquia
                Rev.fac.ing.univ. Antioquia
                Facultad de Ingeniería, Universidad de Antioquia (Medellín )
                0120-6230
                March 2007
                : 0
                : 39
                : 69-78
                Affiliations
                [1 ] Faculty of Sciences and Techniques Morocco
                Article
                S0120-62302007000100006
                d1c8824a-67c1-4d5d-8f9d-cf12b80fcc36

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0120-6230&lng=en
                Categories
                ENGINEERING, MULTIDISCIPLINARY

                General engineering
                Bouguer,Tangier,filtering,sunshading,enhancement edges,gravedad,Tanger,filtración,sombreado,gravity

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