Based on the computing of projectiondensity, it separates the terrain and the objects, extracts the feature information, and gains the basic 3d laser model.
改进基于投影密度的计算，进行地形、地物分离，并提取其特征信息，得到基本的三维激光模型。
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The algorithm first makes a top-down coarse location using the projection analysis of the edge density graph and then makes a bottom-up precise location based on the vertical edge linkage intensity.
This paper presents a novel method based on projection moire deflectometry for the visualization and quantitative evaluation of full-field density and temperature variations in phase object.