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- W2187946103 abstract "Summary Photointerpretation of linear information is a subjective process and therefore there is a substantial need for automation of extracting linear information using automated techniques. Certain efforts were made in this direction including the application of edge enhancement and detection operators, wavelets, Hough Transform etc. However it is difficult to choose among optimal algorithms since the complex scenes portrayed on satellite images are strongly dependent on the radiometric and physical properties of the sensors and on the illumination properties and topographic relief of each scene. Therefore, the category of information to be extracted (scale and context) determines the “suitability” of the method applied for linear feature extraction. In this context, the objective of this work was the implementation, evaluation and comparison of selected optimal edge detection algorithms combined with complementary remote sensing methods towards automated linear feature extraction (roads, land use boundaries, buildings, etc) in an urban / peri-urban environment. The test areas used were located in the extended area Attica Prefecture. A multispectral IKONOS image and panchromatic KVR-1000 imagery of two different dates were acquired for the case studies of Aghios Stefanos and Penteli, Attica, Greece respectively and processed by the following edge detectors: (a) The Canny edge detection algorithm, (b) The Rothwell algorithm, (c) The LOG-LIN algorithm, (d) The SUSAN operator, (e) The anisotropic diffusion algorithm of Black, (f) The Bezdek algorithm and (g) The EDISON algorithm. The resulted edge maps were then compared to thematic maps resulted by applied remote sensing methods and techniques and assessed using statistical methodology. Finally, the performance and behavior of each algorithm for urban feature extraction was assessed as well as the sufficiency of the edge detection methodol ogy for environmental change detection purposes." @default.
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- W2187946103 date "2008-01-01" @default.
- W2187946103 modified "2023-09-27" @default.
- W2187946103 title "The Role of Edge Detection Techniques for the Extraction of Linear Information in Urban / Peri-Urban Environment" @default.
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