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• W2793723115 abstract "Line simplification is an important component of map generalization. In recent years, algorithms for line simplification have been widely researched, and most of them are based on vector data. However, with the increasing development of computer vision, analysing and processing information from unstructured image data is both meaningful and challenging. Therefore, in this paper, we present a new line simplification approach based on image processing (BIP), which is specifically designed for raster data. First, the key corner points on a multi-scale image feature are detected and treated as candidate points. Then, to capture the essence of the shape within a given boundary using the fewest possible segments, the minimum-perimeter polygon (MPP) is calculated and the points of the MPP are defined as the approximate feature points. Finally, the points after simplification are selected from the candidate points by comparing the distances between the candidate points and the approximate feature points. An empirical example was used to test the applicability of the proposed method. The results showed that (1) when the key corner points are detected based on a multi-scale image feature, the local features of the line can be extracted and retained and the positional accuracy of the proposed method can be maintained well; and (2) by defining the visibility constraint of geographical features, this method is especially suitable for simplifying water areas as it is aligned with people’s visual habits." @default.
• W2793723115 created "2018-03-29" @default.
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• W2793723115 date "2018-01-30" @default.
• W2793723115 modified "2023-10-11" @default.
• W2793723115 title "A New Approach to Line Simplification Based on Image Processing: A Case Study of Water Area Boundaries" @default.
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• W2793723115 doi "https://doi.org/10.3390/ijgi7020041" @default.
• W2793723115 hasPublicationYear "2018" @default.
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