A Bilevel Scale-Sets Model for Hierarchical Representation of Large Remote Sensing Images
A Bilevel Scale-Sets Model for Hierarchical Representation of Large Remote Sensing Images
复制标题
大型遥感影像分层表示的双层尺度集模型
DOI:
10.1109/tgrs.2016.2600636
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发表时间:
2016-08
影响因子:
8.2
通讯作者:
Wu Guofeng
中科院分区:
文献类型:
--
作者:
Hu Zhongwen;Li Qingquan;Zou Qin;Zhang Qian;Wu Guofeng
Due to the diversity of geographical objects, it makes great sense to introduce multiscale segmentation/representation into the analysis and interpretation of high-spatial-resolution remote sensing images. However, with the increasing use of high-resolution images, traditional multiscale segmentation methods gradually show their lack in efficiency, particularly when handling large-scale images. In this paper, a novel bilevel scale-sets model (BSM) is proposed for multiscale region-based representation of large-scale remote sensing images. In the BSM, first, an image is divided into blocks with overlapped margins, and a low-level scale-sets model is blockwisely implemented. Second, a segmentation result is obtained by retrieving and mosaicking the blockwise segmentation results, based on which a high-level scale-sets model is implemented covering the whole image. To further improve the efficiency of the BSM, a parallel implementation is presented for the blockwise scale-sets model. In the experiments, first, the effectiveness of the BSM is validated using a WorldView2 image covering a coastal area of Shenzhen, where the BSM obtains accurate multiscale representation results without any mosaic artifacts. Then, the efficiency of the BSM is demonstrated by comparing with the state-of-the-art multiscale segmentation method, i.e., the one integrated in the commercial software eCognition v9.2, where the proposed BSM takes about 7 min to process a 24 000 × 24 000 multispectral ZY3 image and is two to three times faster than the competing method.
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10.3173/air.23.59
发表时间:
2014
期刊:
Agricultural Information Research
影响因子:
--
作者:
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通讯作者:
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影响因子:
19.5
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影响因子:
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通讯作者:
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