A Method of Obtaining Ice Concentration and Floe Size From Shipboard Oblique Sea Ice Images
A Method of Obtaining Ice Concentration and Floe Size From Shipboard Oblique Sea Ice Images
复制标题
一种从船载倾斜海冰图像获取冰浓度和浮冰尺寸的方法
DOI:
10.1109/tgrs.2010.2042962
复制
发表时间:
2010-04
影响因子:
8.2
通讯作者:
Li, Zhijun
中科院分区:
文献类型:
--
作者:
Lu, Peng;Li, Zhijun
Digital cameras are widely used on research vessels to ascertain ice conditions in ice-infested seas. However, geometric distortion of images cannot be avoided if the camera is tilted relative to the sea surface. In this study, the geometric distortion induced by oblique photography was quantitatively estimated based on photogrammetric theory to enable accurate measurement of sea ice features. One accurate method of calculating the ice concentration and floe size was developed, and a corresponding simplified method was also tested. Proper selection of camera system parameters (camera height, tilt, and focal length) cannot only avoid possible errors induced by geometric distortion but also make full use of the image information. Additionally, oblique sea ice images obtained during the 2006 Winter Weddell Outflow Study were investigated using the methods developed here. The results revealed that the geometric distortion of oblique images could be accurately corrected by analyzing each image pixel and that the simplified method could be applied to ensure the precision and efficiency of calculating ice features.
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影响因子:
13.5
作者:
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通讯作者:
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影响因子:
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作者:
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DOI:
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DOI:
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发表时间:
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期刊:
IEEE Trans. Geosci. Remote. Sens.
影响因子:
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D. Haverkamp;Leen-Kiat Soh;C. Tsatsoulis