Texture-sensitive superpixeling and adaptive thresholding for effective segmentation of sea ice floes in high-resolution optical images

Efficient and accurate segmentation of sea ice floes from high-resolution optical (HRO) remote sensing images is crucial for understanding of sea ice evolutions and climate changes, especially in coping with the large data volume. Existing methods suffer from noise interference and mixture of water...

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Bibliographic Details
Published in:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Main Authors: Chai, Yanmei, Ren, Jinchang, Hwang, Byongjun, Wang, Jian, Fan, Dan, Yan, Yijun, Zhu, Shiwei
Format: Article in Journal/Newspaper
Language:English
Published: 2020
Subjects:
Electrical engineering. Electronics Nuclear engineering
Sea ice
Online Access:https://strathprints.strath.ac.uk/74994/
https://strathprints.strath.ac.uk/74994/7/Chai_etal_IEEE_JSTAEORS_2020_Texture_sensitive_superpixeling_and_adaptive_thresholding.pdf
https://doi.org/10.1109/JSTARS.2020.3040614
Description
Summary:Efficient and accurate segmentation of sea ice floes from high-resolution optical (HRO) remote sensing images is crucial for understanding of sea ice evolutions and climate changes, especially in coping with the large data volume. Existing methods suffer from noise interference and mixture of water and ice caused high segmentation error and less robustness. In this study, we propose a novel sea ice floe segmentation algorithm from HRO images based on texture-sensitive superpixeling and twostage thresholding. First, sparse components are extracted from the HRO images using the Robust Principal Component Analysis (RPCA), and noise is removed by the bilateral filter. The enhanced image is obtained by combining the low-rank matrix and the sparse components. Second, a texture-sensitive Simple Linear Iterative Clustering (SLIC) superpixel algorithm is introduced for pre-segmentation of the enhanced HRO image. Third, a learning based adaptive thresholding in the two-stages is employed to generate the refined segmentation from the derived superpixels blocks. The efficacy of the proposed method is validated on two HRO images using visual assessment, quantitative evaluation (with seven metrics) and histogram comparison. The superior performance of the proposed method has demonstrated its efficacy for sea ice floe segmentation.

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