访问类使用每一个帮助类，用于完成它的目标(被uml使用依赖联系图特征化，其看起来像线状箭头)。
The Access class USES each of the helper classes in order to accomplish it's goal (characterized by the UML use dependency relationship diagrams, which look like partially lined arrows).
并将两种特征模型进行线性融合，得到最终的目标表征模型，其中的融合系数由特征似然图对比度自适应确定。
The final target representation model was obtained by means of linear fusing the two feature models, and the fusion coefficient was determined adaptively by contrast ratio of feature likelihood map.
高分辨率SAR图象中目标背景复杂，同时由于受相干斑噪声的影响，很难直接从原始图象数据中提取道路特征。
As the background of objectives in high-resolution SAR images is complicated and also affected by speckle noise, it is almost impossible to extract roads directly from original remote sensing images.
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