基于平面欧几里得图和抽象胞腔复形理论，提出了街道网矢量数据的渐进式表达模型。
A progressive representation model for street networks of vector data was presented based on the theory of plane Euclidean graph and abstract complex cell.
渐进式分割算法可与多尺度图窄带分割算法无缝地结合，降低了对窄带进行优化的计算复杂度。
The progressive segmentation algorithm can be seamlessly combined with multi-scale banded graph-cut optimizations to reduce the computational complexities in the banded optimizations.
这些步骤或等效活动图并非是渐进式要求。
These steps, or an equivalent activity diagram, are not incremental requirements.
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